android – outofmemoryerror同时制作位图

概述我正在制作可以合成相机预览和png的相机应用程序. 我想将图像保存在onPictureTaken回调中 我的消息来源如下 public void onPictureTaken(byte[] data, Camera camera) { //preview from camera Bitmap bitmap = BitmapFactory.decod 我正在制作可以合成相机预览和png的相机应用程序.

我想将图像保存在onPictureTaken回调中

我的消息来源如下

public voID onPictureTaken(byte[] data,Camera camera) {            //prevIEw from camera            Bitmap bitmap = BitmapFactory.decodeByteArray(data,data.length);             // overlay image             Bitmap overlayBmp = overlay.getDrawingCache();             //blank beatmap             Bitmap blankBitmap =             Bitmap.createBitmap(bitmap.getWIDth(),bitmap.getHeight(),Bitmap.Config.ARGB_8888);             //make canvas            Canvas canvas = new Canvas(blankBitmap);             //composite image            canvas.drawBitmap(bitmap,null,new Rect(0,bitmap.getWIDth(),bitmap.getHeight()),null);             canvas.drawBitmap(overlayBmp,null);

然而,它显示了outofmemoryerrorrror,我怎么能解决这个问题..？

05-20 15:13:49.114: E/AndroIDRuntime(31647): FATAL EXCEPTION: main05-20 15:13:49.114: E/AndroIDRuntime(31647): java.lang.OutOfMemoryError05-20 15:13:49.114: E/AndroIDRuntime(31647):    at androID.graphics.Bitmap.nativeCreate(Native Method)05-20 15:13:49.114: E/AndroIDRuntime(31647):    at androID.graphics.Bitmap.createBitmap(Bitmap.java:605)05-20 15:13:49.114: E/AndroIDRuntime(31647):    at androID.graphics.Bitmap.createBitmap(Bitmap.java:585)05-20 15:13:49.114: E/AndroIDRuntime(31647):    at com.example.firstcameraappli.MainActivity.onPictureTaken(MainActivity.java:103)05-20 15:13:49.114: E/AndroIDRuntime(31647):    at androID.harDWare.Camera$EventHandler.handleMessage(Camera.java:750)05-20 15:13:49.114: E/AndroIDRuntime(31647):    at androID.os.Handler.dispatchMessage(Handler.java:99)05-20 15:13:49.114: E/AndroIDRuntime(31647):    at      androID.os.Looper.loop(Looper.java:137)05-20 15:13:49.114: E/AndroIDRuntime(31647):    at androID.app.ActivityThread.main(ActivityThread.java:4514)05-20 15:13:49.114: E/AndroIDRuntime(31647):    at java.lang.reflect.Method.invokeNative(Native Method)05-20 15:13:49.114: E/AndroIDRuntime(31647):    at java.lang.reflect.Method.invoke(Method.java:511)05-20 15:13:49.114: E/AndroIDRuntime(31647):    at com.androID.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:980)

解决方法 试试这个代码……

PictureCallback myPictureCallback_JPG = new PictureCallback(){    @OverrIDe    public voID onPictureTaken(byte[] data,Camera arg1) {        BitmapFactory.Options opt;        opt = new BitmapFactory.Options();        opt.inTempStorage = new byte[16 * 1024];        Parameters parameters = arg1.getParameters();        Size size = parameters.getPictureSize();        int height11 = size.height;        int wIDth11 = size.wIDth;        float mb = (wIDth11 * height11) / 1024000;        if (mb > 4f)            opt.inSampleSize = 4;        else if (mb > 3f)            opt.inSampleSize = 2;        //prevIEw from camera        Bitmap bitmap = BitmapFactory.decodeByteArray(data,data.length,opt);     }}

在位图中获取图像,然后根据您的要求使用.

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