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Android图片添加水印_android 图片加自定义水印

作者：AI数据结构灵魂 | 2024-01-30 00:02:19

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android 图片加自定义水印

最终效果

参考https://github.com/echoMu/WaterMaskDemohttps://github.com/echoMu/WaterMaskDemo

首先要自定义左下角的view

WaterMaskView

  1. import android.content.Context;
  2. import android.util.AttributeSet;
  3. import android.view.LayoutInflater;
  4. import android.widget.RelativeLayout;
  5. import android.widget.TextView;
  6. import com.enneagon.net.R;
  7.  
  8.  
  9. /**
  10.  * 自定义水印view
  11.  */
  12. public class WaterMaskView extends RelativeLayout {
  13.  
  14.     private TextView tv_date;
  15.     private TextView tv_stationName;
  16.     private TextView tv_long;
  17.     private TextView tv_lat;
  18.     private TextView tv_address;
  19.  
  20.     private TextView tv_date2;
  21.     private TextView tv_stationName2;
  22.     private TextView tv_long2;
  23.     private TextView tv_lat2;
  24.     private TextView tv_address2;
  25.  
  26.  
  27.     public WaterMaskView(Context context) {
  28.         this(context, null);
  29.     }
  30.  
  31.     public WaterMaskView(Context context, AttributeSet attrs) {
  32.         super(context, attrs);
  33.         LayoutInflater.from(context).inflate(R.layout.layout_watermask, this, true);
  34.         tv_date = (TextView) findViewById(R.id.tv_date);
  35.         tv_stationName = (TextView) findViewById(R.id.tv_stationName);
  36.         tv_long = (TextView) findViewById(R.id.tv_long);
  37.         tv_lat = (TextView) findViewById(R.id.tv_lat);
  38.         tv_address = (TextView) findViewById(R.id.tv_address);
  39.  
  40.         tv_date2 = (TextView) findViewById(R.id.tv_date2);
  41.         tv_stationName2 = (TextView) findViewById(R.id.tv_stationName2);
  42.         tv_long2 = (TextView) findViewById(R.id.tv_long2);
  43.         tv_lat2 = (TextView) findViewById(R.id.tv_lat2);
  44.         tv_address2 = (TextView) findViewById(R.id.tv_address2);
  45.  
  46.     }
  47.  
  48.     public void setInfoDate(String content) {
  49.         tv_date.setText(content);
  50.         tv_date2.setText(content);
  51.     }
  52.  
  53.     public void setInfoAddress(String content) {
  54.         tv_address.setText(content);
  55.         tv_address2.setText(content);
  56.     }
  57.  
  58.     public void setInfoLat(String content) {
  59.         tv_lat.setText(content);
  60.         tv_lat2.setText(content);
  61.     }
  62.  
  63.     public void setInfoLon(String content) {
  64.         tv_long.setText(content);
  65.         tv_long2.setText(content);
  66.     }
  67.  
  68.     public void setInfoStationName(String content) {
  69.         tv_stationName.setText(content);
  70.         tv_stationName2.setText(content);
  71.     }
  72.  
  73. }

layout_watermask.xml

  1. <?xml version="1.0" encoding="utf-8"?>
  2. <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
  3.     xmlns:tools="http://schemas.android.com/tools"
  4.     android:layout_width="wrap_content"
  5.     android:layout_height="wrap_content">
  6.  
  7.     <LinearLayout
  8.         android:paddingRight="4dp"
  9.         android:layout_width="220dp"
  10.         android:layout_height="wrap_content"
  11.         android:alpha="0.4"
  12.         android:background="@color/black"
  13.         android:orientation="vertical"
  14.         android:paddingTop="4dp"
  15.         android:paddingLeft="4dp"
  16.         android:paddingBottom="4dp">
  17.  
  18.         <LinearLayout
  19.             android:layout_width="wrap_content"
  20.             android:layout_height="wrap_content"
  21.             android:orientation="horizontal">
  22.  
  23.             <TextView
  24.                 android:layout_width="wrap_content"
  25.                 android:layout_height="wrap_content"
  26.                 android:text="日"
  27.                 android:textColor="@color/white"
  28.                 android:textSize="14sp"
  29.                 android:visibility="invisible" />
  30.  
  31.             <TextView
  32.                 android:layout_width="wrap_content"
  33.                 android:layout_height="wrap_content"
  34.                 android:text="占"
  35.                 android:textColor="@color/white"
  36.                 android:textSize="14sp"
  37.                 android:visibility="invisible" />
  38.  
  39.             <TextView
  40.                 android:layout_width="wrap_content"
  41.                 android:layout_height="wrap_content"
  42.                 android:text="占"
  43.                 android:textColor="@color/white"
  44.                 android:textSize="14sp"
  45.                 android:visibility="invisible" />
  46.  
  47.             <TextView
  48.                 android:layout_width="wrap_content"
  49.                 android:layout_height="wrap_content"
  50.                 android:text="期："
  51.                 android:textColor="@color/white"
  52.                 android:textSize="14sp"
  53.                 android:visibility="invisible" />
  54.  
  55.             <TextView
  56.                 android:id="@+id/tv_date2"
  57.                 android:layout_width="wrap_content"
  58.                 android:layout_height="wrap_content"
  59.                 android:layout_marginLeft="4dp"
  60.                 android:textColor="@color/white"
  61.                 android:textSize="14sp"
  62.                 android:visibility="invisible"
  63.                 tools:text="2021-07-12 00:00:00" />
  64.         </LinearLayout>
  65.  
  66.         <LinearLayout
  67.             android:layout_width="wrap_content"
  68.             android:layout_height="wrap_content"
  69.             android:layout_marginTop="4dp"
  70.             android:orientation="horizontal">
  71.  
  72.             <TextView
  73.                 android:layout_width="wrap_content"
  74.                 android:layout_height="wrap_content"
  75.  
  76.                 android:text="站点名称："
  77.                 android:textColor="@color/white"
  78.                 android:textSize="14sp"
  79.                 android:visibility="invisible" />
  80.  
  81.             <TextView
  82.                 android:id="@+id/tv_stationName2"
  83.                 android:layout_width="wrap_content"
  84.                 android:layout_height="wrap_content"
  85.                 android:layout_marginLeft="4dp"
  86.                 android:textColor="@color/white"
  87.                 android:textSize="14sp"
  88.                 android:visibility="invisible"
  89.                 tools:text="xxx站点" />
  90.         </LinearLayout>
  91.  
  92.         <LinearLayout
  93.             android:layout_width="wrap_content"
  94.             android:layout_height="wrap_content"
  95.             android:layout_marginTop="4dp"
  96.             android:orientation="horizontal">
  97.  
  98.             <TextView
  99.                 android:layout_width="wrap_content"
  100.                 android:layout_height="wrap_content"
  101.  
  102.                 android:text="经"
  103.                 android:textColor="@color/white"
  104.                 android:textSize="14sp"
  105.                 android:visibility="invisible" />
  106.  
  107.             <TextView
  108.                 android:layout_width="wrap_content"
  109.                 android:layout_height="wrap_content"
  110.  
  111.                 android:text="占"
  112.                 android:textColor="@color/white"
  113.                 android:textSize="14sp"
  114.                 android:visibility="invisible" />
  115.  
  116.             <TextView
  117.                 android:layout_width="wrap_content"
  118.                 android:layout_height="wrap_content"
  119.  
  120.                 android:text="占"
  121.                 android:textColor="@color/white"
  122.                 android:textSize="14sp"
  123.                 android:visibility="invisible" />
  124.  
  125.             <TextView
  126.                 android:layout_width="wrap_content"
  127.                 android:layout_height="wrap_content"
  128.  
  129.                 android:text="度："
  130.                 android:textColor="@color/white"
  131.                 android:textSize="14sp"
  132.                 android:visibility="invisible" />
  133.  
  134.             <TextView
  135.                 android:id="@+id/tv_long2"
  136.                 android:layout_width="wrap_content"
  137.                 android:layout_height="wrap_content"
  138.                 android:layout_marginLeft="4dp"
  139.                 android:textColor="@color/white"
  140.                 android:textSize="14sp"
  141.                 android:visibility="invisible"
  142.                 tools:text="333333" />
  143.         </LinearLayout>
  144.  
  145.         <LinearLayout
  146.             android:layout_width="wrap_content"
  147.             android:layout_height="wrap_content"
  148.             android:layout_marginTop="4dp"
  149.             android:orientation="horizontal">
  150.  
  151.             <TextView
  152.                 android:layout_width="wrap_content"
  153.                 android:layout_height="wrap_content"
  154.  
  155.                 android:text="纬"
  156.                 android:textColor="@color/white"
  157.                 android:textSize="14sp"
  158.                 android:visibility="invisible" />
  159.  
  160.             <TextView
  161.                 android:layout_width="wrap_content"
  162.                 android:layout_height="wrap_content"
  163.  
  164.                 android:text="占"
  165.                 android:textColor="@color/white"
  166.                 android:textSize="14sp"
  167.                 android:visibility="invisible" />
  168.  
  169.             <TextView
  170.                 android:layout_width="wrap_content"
  171.                 android:layout_height="wrap_content"
  172.  
  173.                 android:text="占"
  174.                 android:textColor="@color/white"
  175.                 android:textSize="14sp"
  176.                 android:visibility="invisible" />
  177.  
  178.             <TextView
  179.                 android:layout_width="wrap_content"
  180.                 android:layout_height="wrap_content"
  181.  
  182.                 android:text="度："
  183.                 android:textColor="@color/white"
  184.                 android:textSize="14sp"
  185.                 android:visibility="invisible" />
  186.  
  187.             <TextView
  188.                 android:id="@+id/tv_lat2"
  189.                 android:layout_width="wrap_content"
  190.                 android:layout_height="wrap_content"
  191.                 android:layout_marginLeft="4dp"
  192.                 android:textColor="@color/white"
  193.                 android:textSize="14sp"
  194.                 android:visibility="invisible"
  195.                 tools:text="1" />
  196.         </LinearLayout>
  197.  
  198.         <LinearLayout
  199.             android:layout_width="wrap_content"
  200.             android:layout_height="wrap_content"
  201.             android:layout_marginTop="4dp"
  202.             android:orientation="horizontal">
  203.  
  204.             <TextView
  205.                 android:layout_width="wrap_content"
  206.                 android:layout_height="wrap_content"
  207.  
  208.                 android:text="地"
  209.                 android:textColor="@color/white"
  210.                 android:textSize="14sp"
  211.                 android:visibility="invisible" />
  212.  
  213.             <TextView
  214.                 android:layout_width="wrap_content"
  215.                 android:layout_height="wrap_content"
  216.  
  217.                 android:text="占"
  218.                 android:textColor="@color/white"
  219.                 android:textSize="14sp"
  220.                 android:visibility="invisible" />
  221.  
  222.             <TextView
  223.                 android:layout_width="wrap_content"
  224.                 android:layout_height="wrap_content"
  225.  
  226.                 android:text="占"
  227.                 android:textColor="@color/white"
  228.                 android:textSize="14sp"
  229.                 android:visibility="invisible" />
  230.  
  231.             <TextView
  232.                 android:layout_width="wrap_content"
  233.                 android:layout_height="wrap_content"
  234.  
  235.                 android:text="址："
  236.                 android:textColor="@color/white"
  237.                 android:textSize="14sp"
  238.                 android:visibility="invisible" />
  239.  
  240.             <TextView
  241.                 android:id="@+id/tv_address2"
  242.                 android:layout_width="wrap_content"
  243.                 android:layout_height="wrap_content"
  244.                 android:layout_marginLeft="4dp"
  245.                 android:textColor="@color/white"
  246.                 android:textSize="14sp"
  247.                 android:visibility="invisible"
  248.                 tools:text="1234" />
  249.         </LinearLayout>
  250.     </LinearLayout>
  251.  
  252.     <LinearLayout
  253.         android:layout_width="220dp"
  254.         android:layout_height="wrap_content"
  255.         android:orientation="vertical"
  256.         android:paddingLeft="4dp"
  257.         android:paddingTop="4dp"
  258.         android:paddingRight="4dp"
  259.         android:paddingBottom="4dp">
  260.  
  261.  
  262.         <LinearLayout
  263.             android:layout_width="wrap_content"
  264.             android:layout_height="wrap_content"
  265.             android:orientation="horizontal">
  266.  
  267.             <TextView
  268.                 android:layout_width="wrap_content"
  269.                 android:layout_height="wrap_content"
  270.  
  271.                 android:text="日"
  272.                 android:textColor="@color/white"
  273.                 android:textSize="14sp" />
  274.  
  275.             <TextView
  276.                 android:layout_width="wrap_content"
  277.                 android:layout_height="wrap_content"
  278.  
  279.                 android:text="占"
  280.                 android:textColor="@color/white"
  281.                 android:textSize="14sp"
  282.                 android:visibility="invisible" />
  283.  
  284.             <TextView
  285.                 android:layout_width="wrap_content"
  286.                 android:layout_height="wrap_content"
  287.  
  288.                 android:text="占"
  289.                 android:textColor="@color/white"
  290.                 android:textSize="14sp"
  291.                 android:visibility="invisible" />
  292.  
  293.             <TextView
  294.                 android:layout_width="wrap_content"
  295.                 android:layout_height="wrap_content"
  296.  
  297.                 android:text="期："
  298.                 android:textColor="@color/white"
  299.                 android:textSize="14sp" />
  300.  
  301.             <TextView
  302.                 android:id="@+id/tv_date"
  303.                 android:layout_width="wrap_content"
  304.                 android:layout_height="wrap_content"
  305.                 android:layout_marginLeft="4dp"
  306.                 android:textColor="@color/white"
  307.                 android:textSize="14sp"
  308.                 tools:text="2021-07-12 00:00:00" />
  309.         </LinearLayout>
  310.  
  311.         <LinearLayout
  312.             android:layout_width="wrap_content"
  313.             android:layout_height="wrap_content"
  314.             android:layout_marginTop="4dp"
  315.             android:orientation="horizontal">
  316.  
  317.             <TextView
  318.                 android:layout_width="wrap_content"
  319.                 android:layout_height="wrap_content"
  320.  
  321.                 android:text="站点名称："
  322.                 android:textColor="@color/white"
  323.                 android:textSize="14sp" />
  324.  
  325.             <TextView
  326.                 android:id="@+id/tv_stationName"
  327.                 android:layout_width="wrap_content"
  328.                 android:layout_height="wrap_content"
  329.                 android:layout_marginLeft="4dp"
  330.                 android:textColor="@color/white"
  331.                 android:textSize="14sp"
  332.                 tools:text="xxx站点" />
  333.         </LinearLayout>
  334.  
  335.         <LinearLayout
  336.             android:layout_width="wrap_content"
  337.             android:layout_height="wrap_content"
  338.             android:layout_marginTop="4dp"
  339.             android:orientation="horizontal">
  340.  
  341.             <TextView
  342.                 android:layout_width="wrap_content"
  343.                 android:layout_height="wrap_content"
  344.  
  345.                 android:text="经"
  346.                 android:textColor="@color/white"
  347.                 android:textSize="14sp" />
  348.  
  349.             <TextView
  350.                 android:layout_width="wrap_content"
  351.                 android:layout_height="wrap_content"
  352.  
  353.                 android:text="占"
  354.                 android:textColor="@color/white"
  355.                 android:textSize="14sp"
  356.                 android:visibility="invisible" />
  357.  
  358.             <TextView
  359.                 android:layout_width="wrap_content"
  360.                 android:layout_height="wrap_content"
  361.  
  362.                 android:text="占"
  363.                 android:textColor="@color/white"
  364.                 android:textSize="14sp"
  365.                 android:visibility="invisible" />
  366.  
  367.             <TextView
  368.                 android:layout_width="wrap_content"
  369.                 android:layout_height="wrap_content"
  370.  
  371.                 android:text="度："
  372.                 android:textColor="@color/white"
  373.                 android:textSize="14sp" />
  374.  
  375.             <TextView
  376.                 android:id="@+id/tv_long"
  377.                 android:layout_width="wrap_content"
  378.                 android:layout_height="wrap_content"
  379.                 android:layout_marginLeft="4dp"
  380.                 android:textColor="@color/white"
  381.                 android:textSize="14sp"
  382.                 tools:text="333333" />
  383.         </LinearLayout>
  384.  
  385.         <LinearLayout
  386.             android:layout_width="wrap_content"
  387.             android:layout_height="wrap_content"
  388.             android:layout_marginTop="4dp"
  389.             android:orientation="horizontal">
  390.  
  391.             <TextView
  392.                 android:layout_width="wrap_content"
  393.                 android:layout_height="wrap_content"
  394.  
  395.                 android:text="纬"
  396.                 android:textColor="@color/white"
  397.                 android:textSize="14sp" />
  398.  
  399.             <TextView
  400.                 android:layout_width="wrap_content"
  401.                 android:layout_height="wrap_content"
  402.  
  403.                 android:text="占"
  404.                 android:textColor="@color/white"
  405.                 android:textSize="14sp"
  406.                 android:visibility="invisible" />
  407.  
  408.             <TextView
  409.                 android:layout_width="wrap_content"
  410.                 android:layout_height="wrap_content"
  411.  
  412.                 android:text="占"
  413.                 android:textColor="@color/white"
  414.                 android:textSize="14sp"
  415.                 android:visibility="invisible" />
  416.  
  417.             <TextView
  418.                 android:layout_width="wrap_content"
  419.                 android:layout_height="wrap_content"
  420.  
  421.                 android:text="度："
  422.                 android:textColor="@color/white"
  423.                 android:textSize="14sp" />
  424.  
  425.             <TextView
  426.                 android:id="@+id/tv_lat"
  427.                 android:layout_width="wrap_content"
  428.                 android:layout_height="wrap_content"
  429.                 android:layout_marginLeft="4dp"
  430.                 android:textColor="@color/white"
  431.                 android:textSize="14sp"
  432.                 tools:text="11F" />
  433.         </LinearLayout>
  434.  
  435.         <LinearLayout
  436.             android:layout_width="wrap_content"
  437.             android:layout_height="wrap_content"
  438.             android:layout_marginTop="4dp"
  439.             android:orientation="horizontal">
  440.  
  441.             <TextView
  442.                 android:layout_width="wrap_content"
  443.                 android:layout_height="wrap_content"
  444.  
  445.                 android:text="地"
  446.                 android:textColor="@color/white"
  447.                 android:textSize="14sp" />
  448.  
  449.             <TextView
  450.                 android:layout_width="wrap_content"
  451.                 android:layout_height="wrap_content"
  452.  
  453.                 android:text="占"
  454.                 android:textColor="@color/white"
  455.                 android:textSize="14sp"
  456.                 android:visibility="invisible" />
  457.  
  458.             <TextView
  459.                 android:layout_width="wrap_content"
  460.                 android:layout_height="wrap_content"
  461.  
  462.                 android:text="占"
  463.                 android:textColor="@color/white"
  464.                 android:textSize="14sp"
  465.                 android:visibility="invisible" />
  466.  
  467.             <TextView
  468.                 android:layout_width="wrap_content"
  469.                 android:layout_height="wrap_content"
  470.  
  471.                 android:text="址："
  472.                 android:textColor="@color/white"
  473.                 android:textSize="14sp" />
  474.  
  475.             <TextView
  476.                 android:id="@+id/tv_address"
  477.                 android:layout_width="wrap_content"
  478.                 android:layout_height="wrap_content"
  479.                 android:layout_marginLeft="4dp"
  480.                 android:textColor="@color/white"
  481.                 android:textSize="14sp"
  482.                 tools:text="1234" />
  483.         </LinearLayout>
  484.     </LinearLayout>
  485. </RelativeLayout>

接着是水印工具类

WaterMaskUtil

  1. import android.content.Context;
  2. import android.graphics.Bitmap;
  3. import android.graphics.Canvas;
  4. import android.graphics.Matrix;
  5. import android.graphics.Paint;
  6. import android.graphics.Rect;
  7. import android.view.View;
  8.  
  9. /**
  10.  * <pre>
  11.  *     author : echoMu
  12.  *     e-mail :
  13.  *     time   : 2017/07/12
  14.  *     desc   :
  15.  *     version:
  16.  * </pre>
  17.  */
  18. public class WaterMaskUtil {
  19.     /**
  20.      * 设置水印图片在左上角
  21.      * @param src
  22.      * @param watermark
  23.      * @param paddingLeft
  24.      * @param paddingTop
  25.      * @return
  26.      */
  27.     public static Bitmap createWaterMaskLeftTop(
  28.             Context context, Bitmap src, Bitmap watermark,
  29.             int paddingLeft, int paddingTop) {
  30.         return createWaterMaskBitmap(src, watermark,
  31.                 dp2px(context, paddingLeft), dp2px(context, paddingTop));
  32.     }
  33.  
  34.     /**
  35.      * 设置水印图片在右下角
  36.      * @param src
  37.      * @param watermark
  38.      * @param paddingRight
  39.      * @param paddingBottom
  40.      * @return
  41.      */
  42.     public static Bitmap createWaterMaskRightBottom(
  43.             Context context, Bitmap src, Bitmap watermark,
  44.             int paddingRight, int paddingBottom) {
  45.         return createWaterMaskBitmap(src, watermark,
  46.                 src.getWidth() - watermark.getWidth() - dp2px(context, paddingRight),
  47.                 src.getHeight() - watermark.getHeight() - dp2px(context, paddingBottom));
  48.     }
  49.  
  50.     /**
  51.      * 设置水印图片到右上角
  52.      * @param src
  53.      * @param watermark
  54.      * @param paddingRight
  55.      * @param paddingTop
  56.      * @return
  57.      */
  58.     public static Bitmap createWaterMaskRightTop(
  59.             Context context, Bitmap src, Bitmap watermark,
  60.             int paddingRight, int paddingTop) {
  61.         return createWaterMaskBitmap( src, watermark,
  62.                 src.getWidth() - watermark.getWidth() - dp2px(context, paddingRight),
  63.                 dp2px(context, paddingTop));
  64.     }
  65.  
  66.     /**
  67.      * 设置水印图片到左下角
  68.      * @param src
  69.      * @param watermark
  70.      * @param paddingLeft
  71.      * @param paddingBottom
  72.      * @return
  73.      */
  74.     public static Bitmap createWaterMaskLeftBottom(
  75.             Context context, Bitmap src, Bitmap watermark,
  76.             int paddingLeft, int paddingBottom) {
  77.         return createWaterMaskBitmap(src, watermark, dp2px(context, paddingLeft),
  78.                 src.getHeight() - watermark.getHeight() - dp2px(context, paddingBottom));
  79.     }
  80.  
  81.     /**
  82.      * 设置水印图片到中间
  83.      * @param src
  84.      * @param watermark
  85.      * @return
  86.      */
  87.     public static Bitmap createWaterMaskCenter(Bitmap src, Bitmap watermark) {
  88.         return createWaterMaskBitmap(src, watermark,
  89.                 (src.getWidth() - watermark.getWidth()) / 2,
  90.                 (src.getHeight() - watermark.getHeight()) / 2);
  91.     }
  92.  
  93.     /**
  94.      * 绘制水印图片
  95.      * @param src 原图
  96.      * @param watermark 水印
  97.      * @param paddingLeft
  98.      * @param paddingTop
  99.      * @return
  100.      */
  101.     private static Bitmap createWaterMaskBitmap(Bitmap src, Bitmap watermark,
  102.                                                 int paddingLeft, int paddingTop) {
  103.         if (src == null) {
  104.             return null;
  105.         }
  106.         int width = src.getWidth();
  107.         int height = src.getHeight();
  108.         //创建一个bitmap
  109.         Bitmap newb = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);// 创建一个新的和SRC长度宽度一样的位图
  110.         //将该图片作为画布
  111.         Canvas canvas = new Canvas(newb);
  112.         //在画布 0，0坐标上开始绘制原始图片
  113.         canvas.drawBitmap(src, 0, 0, null);
  114.         //在画布上绘制水印图片
  115.         canvas.drawBitmap(watermark, paddingLeft, paddingTop, null);
  116.         // 保存
  117.         canvas.save();
  118. //        canvas.save(Canvas.ALL_SAVE_FLAG);
  119.         // 存储
  120.         canvas.restore();
  121.         return newb;
  122.     }
  123.  
  124.     /**
  125.      * 给图片添加文字到左上角
  126.      * @param context
  127.      * @param bitmap
  128.      * @param text
  129.      * @return
  130.      */
  131.     public static Bitmap drawTextToLeftTop(Context context, Bitmap bitmap, String text,
  132.                                            int size, int color, int paddingLeft, int paddingTop) {
  133.         Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
  134.         paint.setColor(color);
  135.         paint.setTextSize(dp2px(context, size));
  136.         Rect bounds = new Rect();
  137.         paint.getTextBounds(text, 0, text.length(), bounds);
  138.         return drawTextToBitmap(context, bitmap, text, paint, bounds,
  139.                 dp2px(context, paddingLeft),
  140.                 dp2px(context, paddingTop) + bounds.height());
  141.     }
  142.  
  143.     /**
  144.      * 绘制文字到右下角
  145.      * @param context
  146.      * @param bitmap
  147.      * @param text
  148.      * @param size
  149.      * @param color
  150.      * @param paddingRight
  151.      * @param paddingBottom
  152.      * @return
  153.      */
  154.     public static Bitmap drawTextToRightBottom(Context context, Bitmap bitmap, String text,
  155.                                                int size, int color, int paddingRight, int paddingBottom) {
  156.         Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
  157.         paint.setColor(color);
  158.         paint.setTextSize(dp2px(context, size));
  159.         Rect bounds = new Rect();
  160.         paint.getTextBounds(text, 0, text.length(), bounds);
  161.         return drawTextToBitmap(context, bitmap, text, paint, bounds,
  162.                 bitmap.getWidth() - bounds.width() - dp2px(context, paddingRight),
  163.                 bitmap.getHeight() - dp2px(context, paddingBottom));
  164.     }
  165.  
  166.     /**
  167.      * 绘制文字到右上方
  168.      * @param context
  169.      * @param bitmap
  170.      * @param text
  171.      * @param size
  172.      * @param color
  173.      * @param paddingRight
  174.      * @param paddingTop
  175.      * @return
  176.      */
  177.     public static Bitmap drawTextToRightTop(Context context, Bitmap bitmap, String text,
  178.                                             int size, int color, int paddingRight, int paddingTop) {
  179.         Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
  180.         paint.setColor(color);
  181.         paint.setTextSize(dp2px(context, size));
  182.         Rect bounds = new Rect();
  183.         paint.getTextBounds(text, 0, text.length(), bounds);
  184.         return drawTextToBitmap(context, bitmap, text, paint, bounds,
  185.                 bitmap.getWidth() - bounds.width() - dp2px(context, paddingRight),
  186.                 dp2px(context, paddingTop) + bounds.height());
  187.     }
  188.  
  189.     /**
  190.      * 绘制文字到左下方
  191.      * @param context
  192.      * @param bitmap
  193.      * @param text
  194.      * @param size
  195.      * @param color
  196.      * @param paddingLeft
  197.      * @param paddingBottom
  198.      * @return
  199.      */
  200.     public static Bitmap drawTextToLeftBottom(Context context, Bitmap bitmap, String text,
  201.                                               int size, int color, int paddingLeft, int paddingBottom) {
  202.         Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
  203.         paint.setColor(color);
  204.         paint.setTextSize(dp2px(context, size));
  205.         Rect bounds = new Rect();
  206.         paint.getTextBounds(text, 0, text.length(), bounds);
  207.         return drawTextToBitmap(context, bitmap, text, paint, bounds,
  208.                 dp2px(context, paddingLeft),
  209.                 bitmap.getHeight() - dp2px(context, paddingBottom+2));
  210.     }
  211.  
  212.     /**
  213.      * 绘制文字到中间
  214.      * @param context
  215.      * @param bitmap
  216.      * @param text
  217.      * @param size
  218.      * @param color
  219.      * @return
  220.      */
  221.     public static Bitmap drawTextToCenter(Context context, Bitmap bitmap, String text,
  222.                                           int size, int color) {
  223.         Paint paint = new Paint(Paint.ANTI_ALIAS_FLAG);
  224.         paint.setColor(color);
  225.         paint.setTextSize(dp2px(context, size));
  226.         Rect bounds = new Rect();
  227.         paint.getTextBounds(text, 0, text.length(), bounds);
  228.         return drawTextToBitmap(context, bitmap, text, paint, bounds,
  229.                 (bitmap.getWidth() - bounds.width()) / 2,
  230.                 (bitmap.getHeight() + bounds.height()) / 2);
  231.     }
  232.  
  233.     //图片上绘制文字
  234.     private static Bitmap drawTextToBitmap(Context context, Bitmap bitmap, String text,
  235.                                            Paint paint, Rect bounds, int paddingLeft, int paddingTop) {
  236.         Bitmap.Config bitmapConfig = bitmap.getConfig();
  237.  
  238.         paint.setDither(true); // 获取跟清晰的图像采样
  239.         paint.setFilterBitmap(true);// 过滤一些
  240.         if (bitmapConfig == null) {
  241.             bitmapConfig = Bitmap.Config.ARGB_8888;
  242.         }
  243.         bitmap = bitmap.copy(bitmapConfig, true);
  244.         Canvas canvas = new Canvas(bitmap);
  245.  
  246. //        canvas.drawText(text, paddingLeft, paddingTop, paint);
  247.         drawMultiLineText(text, paddingLeft, paddingTop, paint,canvas);
  248.         return bitmap;
  249.     }
  250.  
  251.     private static void drawMultiLineText(String str, float x, float y, Paint paint,
  252.                                           Canvas canvas) {
  253.         String[] lines = str.split("\n");
  254.         float txtSize = -paint.ascent() + paint.descent();
  255.  
  256.         if (paint.getStyle() == Paint.Style.FILL_AND_STROKE
  257.                 || paint.getStyle() == Paint.Style.STROKE) {
  258.             txtSize += paint.getStrokeWidth(); // add stroke width to the text
  259.         }
  260.         float lineSpace = txtSize * 0.1f; // default line spacing
  261.         for (int i = 0; i < lines.length; ++i) {
  262.             canvas.drawText(lines[i], x, y + (txtSize + lineSpace) * i, paint);
  263.         }
  264.     }
  265.  
  266.     /**
  267.      * 缩放图片
  268.      * @param src
  269.      * @param w
  270.      * @param h
  271.      * @return
  272.      */
  273.     public static Bitmap scaleWithWH(Bitmap src, double w, double h) {
  274.         if (w == 0 || h == 0 || src == null) {
  275.             return src;
  276.         } else {
  277.             // 记录src的宽高
  278.             int width = src.getWidth();
  279.             int height = src.getHeight();
  280.             // 创建一个matrix容器
  281.             Matrix matrix = new Matrix();
  282.             // 计算缩放比例
  283.             float scaleWidth = (float) (w / width);
  284.             float scaleHeight = (float) (h / height);
  285.             // 开始缩放
  286.             matrix.postScale(scaleWidth, scaleHeight);
  287.             // 创建缩放后的图片
  288.             return Bitmap.createBitmap(src, 0, 0, width, height, matrix, true);
  289.         }
  290.     }
  291.  
  292.     /**
  293.      * dip转pix
  294.      * @param context
  295.      * @param dp
  296.      * @return
  297.      */
  298.     public static int dp2px(Context context, float dp) {
  299.         final float scale = context.getResources().getDisplayMetrics().density;
  300.         return (int) (dp * scale + 0.5f);
  301.     }
  302.  
  303.     /**
  304.      * 将一个view转换为Bitmap
  305.      * @param view
  306.      * @return
  307.      */
  308.     public static Bitmap convertViewToBitmap(View view){
  309.         view.measure(View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED), View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));
  310.         view.layout(0, 0, view.getMeasuredWidth(), view.getMeasuredHeight());
  311.         view.buildDrawingCache();
  312.         Bitmap bitmap = view.getDrawingCache();
  313.         return bitmap;
  314.     }
  315.  
  316.     /**
  317.      * 缩放Bitmap图片
  318.      *
  319.      */
  320.     public static Bitmap zoomBitmap(Bitmap bitmap, int width, int height) {
  321.  
  322.         int w = bitmap.getWidth();
  323.         int h = bitmap.getHeight();
  324.         Matrix matrix = new Matrix();
  325.         float scaleWidth = ((float) width / w);
  326.         float scaleHeight = ((float) height / h);
  327.         matrix.postScale(scaleWidth, scaleHeight);// 利用矩阵进行缩放不会造成内存溢出
  328.         Bitmap newbmp = Bitmap.createBitmap(bitmap, 0, 0, w, h, matrix, true);
  329.  
  330.         return newbmp;
  331.     }
  332.  
  333. }

使用方式：

1、获取图片的URL，然后转成bitmap

  Bitmap sourBitmap = BitmapFactory.decodeFile(fileUrl);

2、添加水印，并转为Bitmap

  1. //默认设置水印位置在左下
  2. Bitmap WaterBitmap = saveWaterMask(context, 3, sourBitmap,lng, lat, address, stationName);

  1.  
  2.     /**
  3.      * @param position 左上为0，顺时针算起
  4.      */
  5.     private static Bitmap saveWaterMask(Context context, int position, Bitmap sourBitmap,String lng, String lat, String address, String stationName) {
  6.         WaterMaskView waterMaskView = new WaterMaskView(context);
  7.         RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
  8.         waterMaskView.setLayoutParams(params);
  9. //        waterMaskView.setCompanyText(address);
  10. //        waterMaskView.setInfoText(stationName);
  11.         String time = TimeUtils.getCurrentTimeInString();
  12.         waterMaskView.setInfoDate(time);
  13.         waterMaskView.setInfoAddress(address);
  14.         waterMaskView.setInfoLat(lat);
  15.         waterMaskView.setInfoLon(lng);
  16.         waterMaskView.setInfoStationName(stationName);
  17.  
  18.         Bitmap waterBitmap = WaterMaskUtil.convertViewToBitmap(waterMaskView);
  19.  
  20.         //根据原图处理要生成的水印的宽高
  21.         float width = sourBitmap.getWidth();
  22.         float height = sourBitmap.getHeight();
  23.         float be = width / height;
  24.  
  25.         if ((float) 16 / 9 >= be && be >= (float) 4 / 3) {
  26.             //在图片比例区间内16;9~4：3内，将生成的水印bitmap设置为原图宽高各自的1/5
  27.             waterBitmap = WaterMaskUtil.zoomBitmap(waterBitmap, (int) width / 5, (int) height / 5);
  28.         } else if (be > (float) 16 / 9) {
  29.             //生成4：3的水印
  30.             waterBitmap = WaterMaskUtil.zoomBitmap(waterBitmap, (int) width / 5, (int) width * 3 / 20);
  31.         } else if (be < (float) 4 / 3) {
  32.             //生成4：3的水印
  33.             waterBitmap = WaterMaskUtil.zoomBitmap(waterBitmap, (int) height * 4 / 15, (int) height / 5);
  34.         }
  35.         Bitmap watermarkBitmap = null;
  36.         switch (position) {
  37.             case 0:
  38.                 watermarkBitmap = WaterMaskUtil.createWaterMaskLeftTop(context, sourBitmap, waterBitmap, 0, 0);
  39.                 break;
  40.             case 1:
  41.                 watermarkBitmap = WaterMaskUtil.createWaterMaskRightTop(context, sourBitmap, waterBitmap, 0, 0);
  42.                 break;
  43.             case 2:
  44.                 watermarkBitmap = WaterMaskUtil.createWaterMaskRightBottom(context, sourBitmap, waterBitmap, 0, 0);
  45.                 break;
  46.             case 3:
  47.                 watermarkBitmap = WaterMaskUtil.createWaterMaskLeftBottom(context, sourBitmap, waterBitmap, 0, 0);
  48.                 break;
  49.         }
  50.         return watermarkBitmap;
  51.  
  52.     }

3、将Bitmap保存到手机，获取文件URL，最后将文件上传到服务器

  1. //保存图片
  2. String fileName = "IMG_" + new Date().getTime() + RandomUtil.getRandom(10000) + ".png";
  3. String targetFileUrl = saveBitmap(context, WaterBitmap, fileName);
  1. private static String saveBitmap(Context context, Bitmap mBitmap, String name) {
  2.  
  3.         String appName = context.getResources().getString(R.string.app_name);
  4.  
  5.         String folder = Environment.getExternalStorageDirectory()
  6.                 + File.separator + appName + File.separator + "photo";
  7.  
  8.         LogUtils.i("folder=" + folder);
  9.  
  10.         File folderFile = new File(folder);
  11.  
  12.         if (!folderFile.exists()) {
  13.             boolean isSuccess = folderFile.mkdirs();
  14.             LogUtils.i("创建文件夹路径是否成功=" + isSuccess);
  15.         }
  16.  
  17.         String target = folder + File.separator + name;
  18.         LogUtils.i("target=" + target);
  19.  
  20.         File targetFile = new File(target);
  21.  
  22.         try {
  23.             targetFile.createNewFile();
  24.         } catch (IOException e) {
  25.             LogUtils.e("在保存图片时出错：" + e.toString());
  26.         }
  27.  
  28.         FileOutputStream fOut = null;
  29.         try {
  30.             fOut = new FileOutputStream(targetFile);
  31.         } catch (FileNotFoundException e) {
  32.             e.printStackTrace();
  33.         }
  34.         mBitmap.compress(Bitmap.CompressFormat.PNG, 100, fOut);
  35.         try {
  36.             fOut.flush();
  37.         } catch (IOException e) {
  38.             e.printStackTrace();
  39.         }
  40.         try {
  41.             fOut.close();
  42.         } catch (IOException e) {
  43.             e.printStackTrace();
  44.         }
  45.  
  46.         return target;
  47.     }

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