android.graphics.BitmapFactory.nativeDecodeAsset(Native Method)中的java.lang.OutOfMemoryError

Question

我试图按下按钮执行动画..按钮单击步骤如下..

1. 按钮图像发生变化
2. 动画播放
3. 显示下一个布局..

但我得到一个内存不足的例外..

当动画文件未添加到项目时没有错误.但是,由于动漫的加入存在问题.

我在这里使用3个类文件(home_screen,button_anime和home)

home_screen.java接收按钮点击信息,更改按钮图像并转移到button_anime类,动画文件在button_anime.java中启动,动画播放后,下一个布局从home.java显示

原木猫如下..

 E/AndroidRuntime(1255): java.lang.OutOfMemoryError
 E/AndroidRuntime(1255):    at android.graphics.BitmapFactory.nativeDecodeAsset(Native Method)
 E/AndroidRuntime(1255):    at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:587)
 E/AndroidRuntime(1255):    at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:422)
 E/AndroidRuntime(1255):    at android.graphics.drawable.Drawable.createFromResourceStream(Drawable.java:840)
 E/AndroidRuntime(1255):    at android.content.res.Resources.loadDrawable(Resources.java:2110)
 E/AndroidRuntime(1255):    at android.content.res.Resources.getDrawable(Resources.java:700)
 E/AndroidRuntime(1255):    at android.graphics.drawable.AnimationDrawable.inflate(AnimationDrawable.java:282)
 E/AndroidRuntime(1255):    at android.graphics.drawable.Drawable.createFromXmlInner(Drawable.java:937)
 E/AndroidRuntime(1255):    at android.graphics.drawable.Drawable.createFromXml(Drawable.java:877)
 E/AndroidRuntime(1255):    at android.content.res.Resources.loadDrawable(Resources.java:2092)
 E/AndroidRuntime(1255):    at android.content.res.Resources.getDrawable(Resources.java:700)
 E/AndroidRuntime(1255):    at android.view.View.setBackgroundResource(View.java:15303)
 E/AndroidRuntime(1255):    at com.quinoid.thomasinternational.Button_Anime.onCreate(Button_Anime.java:19)
 E/AndroidRuntime(1255):    at android.app.Activity.performCreate(Activity.java:5231)
 E/AndroidRuntime(1255):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
 E/AndroidRuntime(1255):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159)
 E/AndroidRuntime(1255):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
 E/AndroidRuntime(1255):    at android.app.ActivityThread.access$800(ActivityThread.java:135)
 E/AndroidRuntime(1255):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
 E/AndroidRuntime(1255):    at android.os.Handler.dispatchMessage(Handler.java:102)
 E/AndroidRuntime(1255):    at android.os.Looper.loop(Looper.java:136)
 E/AndroidRuntime(1255):    at android.app.ActivityThread.main(ActivityThread.java:5017)
 E/AndroidRuntime(1255):    at java.lang.reflect.Method.invokeNative(Native Method)
 E/AndroidRuntime(1255):    at java.lang.reflect.Method.invoke(Method.java:515)
 E/AndroidRuntime(1255):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
 E/AndroidRuntime(1255):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
 E/AndroidRuntime(1255):    at dalvik.system.NativeStart.main(Native Method)

我的home_screen.java

home.setOnClickListener(new OnClickListener() { <-- error happens somewhere here

    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub
        Bitmap b = BitmapFactory.decodeResource(getResources(),R.drawable.home1);
        Drawable d = new BitmapDrawable(getResources(),b); 
        home.setBackgroundDrawable(d); <-- this dose not work..
        Intent myIntent = new Intent(Home_Screen.this, Button_Anime.class);
        startActivity(myIntent);
    }
});

Answer 1

_img是你的imageview.你必须解码你的图像并设置它的大小,如下所示.

 File imgFile = new File(_path); // path of your file
    if (imgFile.exists()) {
        FileInputStream fis = new FileInputStream(imgFile);
        BitmapFactory.Options options = new BitmapFactory.Options();
        options.inSampleSize = 8;
        options.inPurgeable = true;
        options.inScaled = true;
        Bitmap bm = BitmapFactory.decodeStream(fis, null,options);
       _img.setImageBitmap(bm);

Answer 2

您应该使用decodeResource(Resources res, int id, BitmapFactory.Options opts), 并指定inSampleSize-

如果设置为 > 1 的值，则请求解码器对原始图像进行二次采样，返回较小的图像以节省内存。