反編譯一個程序，看到一張合成圖，想分拆出里面的每個小圖，知道了各個圖的坐標大小后，寫了一個小方法，希望對大家有用哈

package com.bitimage;import java.io.ByteArrayInputStream; import java.io.ByteArrayOutputStream; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream;import android.app.Activity; import android.graphics.Bitmap; import android.graphics.Bitmap.CompressFormat; import android.graphics.drawable.BitmapDrawable; import android.graphics.drawable.Drawable; import android.os.Bundle; import android.os.Environment;public class BigImageToSmall extends Activity {@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);int[] ix = { 0, 0, 32, 64, 96, 128, 168, 208, 248, 0, 33, 66, 99, 132,150, 168, 132, 150, 168, 186, 204, 222, 186, 204, 222, 0, 0, 0,240, 240, 260, 260, 0, 31, 95, 159, 223, 700, 670, 670, 287, 0,260, 0, 12, 24, 36, 48, 60, 72, 84, 96, 108, 0, 670, 670, 0, 0,626, 648, 0, 298, 0, 288, 320, 0, 0, 670, 702, 734, 670, 702,734, 670, 702, 734, 670, 120, 130, 140, 150, 160, 170, 180,190, 200, 210, 702, 0, 0, 0, 0, 0, 320, 0 };int[] iy = { 0, 0, 0, 0, 0, 0, 0, 0, 0, 42, 42, 42, 42, 40, 40, 40, 58,58, 58, 40, 40, 40, 58, 58, 58, 76, 127, 144, 40, 57, 231, 248,280, 280, 280, 280, 280, 295, 234, 295, 280, 321, 153, 153,153, 153, 153, 153, 153, 153, 153, 153, 153, 355, 0, 139, 504,225, 0, 0, 170, 40, 425, 0, 263, 0, 0, 333, 333, 333, 380, 380,380, 427, 427, 427, 474, 153, 153, 153, 153, 153, 153, 153,153, 153, 153, 474, 0, 0, 0, 0, 0, 0, 459 };int[] iw = { 0, 32, 32, 32, 32, 40, 40, 40, 40, 33, 33, 33, 33, 18, 18,18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 290, 320, 294, 58, 48,58, 58, 31, 64, 64, 64, 64, 44, 80, 30, 31, 320, 50, 12, 12,12, 12, 12, 12, 12, 12, 12, 12, 310, 113, 110, 308, 260, 22,22, 260, 17, 320, 28, 202, 1, 1, 32, 32, 32, 32, 32, 32, 32,32, 32, 32, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 76, 1, 1,1, 1, 1, 306, 320 };int[] ih = { 0, 42, 42, 42, 42, 35, 35, 35, 35, 34, 34, 34, 34, 18, 18,18, 18, 18, 18, 18, 18, 18, 18, 18, 18, 51, 17, 9, 17, 9, 17,17, 41, 41, 41, 41, 41, 24, 61, 32, 41, 34, 78, 17, 17, 17, 17,17, 17, 17, 17, 17, 17, 70, 139, 95, 40, 55, 520, 520, 55, 20,34, 36, 57, 1, 1, 47, 47, 47, 47, 47, 47, 47, 47, 47, 47, 17,17, 17, 17, 17, 17, 17, 17, 17, 17, 48, 1, 1, 1, 1, 1, 263, 45 };System.out.println("ix length = " + ix.length);System.out.println("iy length = " + iy.length);System.out.println("iw length = " + iw.length);System.out.println("ih length = " + ih.length);FileOutputStream fos = null;for (int i = 1; i < 95; i++) {System.out.println(i);String aa = String.format("a%02d", i);File file = new File(Environment.getExternalStorageDirectory(), aa + ".png"); // File file = new File(System.getProperty("user.dir"),"a" // + i + ".png");System.out.println(file);if (!file.exists()) {try {file.createNewFile();} catch (IOException e) {e.printStackTrace();}}Drawable d = getResources().getDrawable(R.drawable.cs_jmp);BitmapDrawable bd = (BitmapDrawable) d;Bitmap bm = bd.getBitmap();Bitmap bitmap = Bitmap.createBitmap(bm, ix[i], iy[i], iw[i], ih[i]);ByteArrayOutputStream baos = new ByteArrayOutputStream();bitmap.compress(CompressFormat.PNG, 100, baos);InputStream in = new ByteArrayInputStream(baos.toByteArray());try {fos = new FileOutputStream(file);byte[] bytes = new byte[100];int tempbyte;while ((tempbyte = in.read(bytes)) != -1) {System.out.println("tempbyte = " + tempbyte);fos.write(bytes,0,tempbyte);}fos.flush();} catch (Exception e) {e.printStackTrace();} finally {if (fos != null) {try {fos.close();} catch (IOException e) {e.printStackTrace();}}if (in != null) {try {in.close();} catch (IOException e) {e.printStackTrace();}}}}} }

　　記得加權限哦

<uses-permissionandroid:name="android.permission.WRITE_EXTERNAL_STORAGE" />

　　demo圖片

轉載于:https://www.cnblogs.com/ycclmy/p/3939125.html

總結

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