图片放大缩小旋转左移右移镜像倒影android

作者：笔触狂放9 | 2024-03-18 12:10:48

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图片放大缩小旋转左移右移镜像倒影

demo:

TestImage

1. 将 meinv.jpg 图片拷贝到以下目录TestImage\app\src\main\res\mipmap-hdpi

1.AndroidManifest.xml


<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.glsite.testimage">
 
    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
 
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
 
</manifest>

2.activity_main.xml


<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">
 
    <ImageView
        android:id="@+id/iv"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        android:src="@mipmap/meinv"/>
 
    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="8dp"
        android:onClick="turnBig"
        android:text="放大"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />
 
    <Button
        android:id="@+id/button2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="8dp"
        android:layout_marginRight="8dp"
        android:onClick="turnSmall"
        android:text="缩小"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toTopOf="parent" />
 
</android.support.constraint.ConstraintLayout>

3.activity_main2.xml


<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">
 
    <ImageView
        android:id="@+id/iv"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        android:src="@mipmap/meinv"/>
 
    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="8dp"
        android:onClick="turnLeft"
        android:text="左移"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />
 
    <Button
        android:id="@+id/button2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="8dp"
        android:layout_marginRight="8dp"
        android:onClick="turnRight"
        android:text="右移"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toTopOf="parent" />
 
</android.support.constraint.ConstraintLayout>

4.activity_main3.xml


<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">
 
    <ImageView
        android:id="@+id/iv"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        android:src="@mipmap/meinv"/>
 
    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="8dp"
        android:onClick="turnCircleLeft"
        android:text="逆时针旋转"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />
 
    <Button
        android:id="@+id/button2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="8dp"
        android:layout_marginRight="8dp"
        android:onClick="turnCircleRight"
        android:text="顺时针旋转"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toTopOf="parent" />
 
</android.support.constraint.ConstraintLayout>

5.activity_main4.xml


<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">
 
    <ImageView
        android:id="@+id/iv"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        android:src="@mipmap/meinv"/>
 
    <Button
        android:id="@+id/button"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginStart="8dp"
        android:layout_marginLeft="8dp"
        android:layout_marginTop="8dp"
        android:onClick="click01"
        android:text="倒影"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />
 
    <Button
        android:id="@+id/button2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="8dp"
        android:layout_marginEnd="8dp"
        android:layout_marginRight="8dp"
        android:onClick="click02"
        android:text="镜面"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintTop_toTopOf="parent" />
 
</android.support.constraint.ConstraintLayout>

6.MainActivity.java


package com.glsite.testimage;
 
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.ImageView;
 
public class MainActivity extends AppCompatActivity {
 
    private ImageView mIv;
    private int dx = 0;
    private int degress = 0;
 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main4);
        mIv = findViewById(R.id.iv);
    }
 
    /**
     * 放大
     * @param view
     */
    public void turnBig(View view) {
        Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.mipmap.meinv);
 
        Matrix matrix = new Matrix();
        matrix.setScale(2, 2);
 
        // 1.买一张纸
        Bitmap newBitmap = Bitmap.createBitmap(bitmap.getWidth() * 2, bitmap.getHeight() * 2, bitmap.getConfig());
 
        // 2.买一个画板
        Canvas canvas = new Canvas(newBitmap);
 
        // 3.临摹绘画
        Paint paint = new Paint();
        paint.setColor(Color.BLACK);
        canvas.drawBitmap(bitmap, matrix, paint);
 
        mIv.setImageBitmap(newBitmap);
    }
 
    /**
     * 缩小
     * @param view
     */
    public void turnSmall(View view) {
        Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.mipmap.meinv);
 
        Matrix matrix = new Matrix();
        matrix.setScale(0.5f, 0.5f);
 
        // 1.买一张纸
        Bitmap newBitmap = Bitmap.createBitmap(bitmap.getWidth() / 2, bitmap.getHeight() / 2, bitmap.getConfig());
 
        // 2.买一个画板
        Canvas canvas = new Canvas(newBitmap);
 
        // 3.临摹绘画
        Paint paint = new Paint();
        paint.setColor(Color.BLACK);
        canvas.drawBitmap(bitmap, matrix, paint);
 
        mIv.setImageBitmap(newBitmap);
    }
 
    /**
     * 左移
     * @param view
     */
    public void turnLeft(View view) {
        Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.mipmap.meinv);
 
        Matrix matrix = new Matrix();
        dx--;
        matrix.setTranslate(dx, 0);
 
        // 1.买一张纸
        Bitmap newBitmap = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), bitmap.getConfig());
 
        // 2.买一个画板
        Canvas canvas = new Canvas(newBitmap);
 
        // 3.临摹绘画
        Paint paint = new Paint();
        canvas.drawColor(Color.WHITE);
        paint.setColor(Color.BLACK);
        canvas.drawBitmap(bitmap, matrix, paint);
 
        mIv.setImageBitmap(newBitmap);
    }
 
    /**
     * 右移
     * @param view
     */
    public void turnRight(View view) {
        Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.mipmap.meinv);
 
        Matrix matrix = new Matrix();
        dx++;
        matrix.setTranslate(dx, 0);
 
        // 1.买一张纸
        Bitmap newBitmap = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), bitmap.getConfig());
 
        // 2.买一个画板
        Canvas canvas = new Canvas(newBitmap);
 
        // 3.临摹绘画
        Paint paint = new Paint();
        canvas.drawColor(Color.WHITE);
        paint.setColor(Color.BLACK);
        canvas.drawBitmap(bitmap, matrix, paint);
 
        mIv.setImageBitmap(newBitmap);
    }
 
    /**
     * 逆时针旋转
     * @param view
     */
    public void turnCircleLeft(View view) {
        Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.mipmap.meinv);
 
        Matrix matrix = new Matrix();
        matrix.setRotate(--degress, bitmap.getWidth(), bitmap.getHeight());
        matrix.postTranslate(100, 100);
 
        // 1.买一张纸
        Bitmap newBitmap = Bitmap.createBitmap(bitmap.getWidth()*2, bitmap.getHeight()*2, bitmap.getConfig());
 
        // 2.买一个画板
        Canvas canvas = new Canvas(newBitmap);
 
        // 3.临摹绘画
        Paint paint = new Paint();
        canvas.drawColor(Color.WHITE);
        paint.setColor(Color.BLACK);
        paint.setAntiAlias(true);// 消除锯齿
        canvas.drawBitmap(bitmap, matrix, paint);
 
        mIv.setImageBitmap(newBitmap);
    }
 
    /**
     * 顺时针旋转
     * @param view
     */
    public void turnCircleRight(View view) {
        Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.mipmap.meinv);
 
        Matrix matrix = new Matrix();
        matrix.setRotate(++degress, bitmap.getWidth(), bitmap.getHeight());
        matrix.postTranslate(100, 100);
 
        // 1.买一张纸
        Bitmap newBitmap = Bitmap.createBitmap((int)(bitmap.getWidth()*1.5), (int)(bitmap.getHeight()*1.5), bitmap.getConfig());
 
        // 2.买一个画板
        Canvas canvas = new Canvas(newBitmap);
 
        // 3.临摹绘画
        Paint paint = new Paint();
        canvas.drawColor(Color.WHITE);
        paint.setColor(Color.BLACK);
        paint.setAntiAlias(true);// 消除锯齿
        canvas.drawBitmap(bitmap, matrix, paint);
 
        mIv.setImageBitmap(newBitmap);
    }
 
    /**
     * 倒影
     * @param view
     */
    public void click01(View view) {
        Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.mipmap.meinv);
 
        Matrix matrix = new Matrix();
        matrix.setScale(1, -1);
        matrix.postTranslate(0, bitmap.getHeight());
 
        // 1.买一张纸
        Bitmap newBitmap = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), bitmap.getConfig());
 
        // 2.买一个画板
        Canvas canvas = new Canvas(newBitmap);
 
        // 3.临摹绘画
        Paint paint = new Paint();
        canvas.drawColor(Color.WHITE);
        paint.setColor(Color.BLACK);
        paint.setAntiAlias(true);// 消除锯齿
        canvas.drawBitmap(bitmap, matrix, paint);
 
        mIv.setImageBitmap(newBitmap);
    }
 
    /**
     * 镜面
     * @param view
     */
    public void click02(View view) {
        Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.mipmap.meinv);
 
        Matrix matrix = new Matrix();
        matrix.setScale(-1, 1);
        matrix.postTranslate(bitmap.getWidth(), 0);
 
        // 1.买一张纸
        Bitmap newBitmap = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), bitmap.getConfig());
 
        // 2.买一个画板
        Canvas canvas = new Canvas(newBitmap);
 
        // 3.临摹绘画
        Paint paint = new Paint();
        canvas.drawColor(Color.WHITE);
        paint.setColor(Color.BLACK);
        paint.setAntiAlias(true);// 消除锯齿
        canvas.drawBitmap(bitmap, matrix, paint);
 
        mIv.setImageBitmap(newBitmap);
    }
}

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