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無法理解，因爲當我嘗試使用分配作爲輸入和輸出時，程序崩潰。Renderscript分配崩潰
我檢查了是否由於Android清單中的某種類型的權限，但都沒有。
的project.properties如下：
target=android-19
android.library.reference.1=../appcompat_v7
renderscript.target=19
renderscript.support.mode=true
sdk.buildtools=20.0.0
的代碼如下：
...
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
BitmapFactory.Options options = new BitmapFactory.Options();
options.inPreferredConfig = Bitmap.Config.ARGB_8888;
options.inJustDecodeBounds = true;
Bitmap bmp = BitmapFactory.decodeResource(getResources(), R.drawable.ic_launcher);
Allocation inputAlloc = Allocation.createFromBitmap(r, bmp, Allocation.MipmapControl.MIPMAP_NONE, Allocation.USAGE_SCRIPT);
...
而logcat的顯示我以下錯誤：
09-25 11:32:08.623: E/AndroidRuntime(537): FATAL EXCEPTION: main
09-25 11:32:08.623: E/AndroidRuntime(537): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.gpurenderscript/com.example.gpurenderscript.MainActivity}: java.lang.NullPointerException
09-25 11:32:08.623: E/AndroidRuntime(537): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647)
09-25 11:32:08.623: E/AndroidRuntime(537): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
09-25 11:32:08.623: E/AndroidRuntime(537): at android.app.ActivityThread.access$1500(ActivityThread.java:117)
09-25 11:32:08.623: E/AndroidRuntime(537): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
09-25 11:32:08.623: E/AndroidRuntime(537): at android.os.Handler.dispatchMessage(Handler.java:99)
09-25 11:32:08.623: E/AndroidRuntime(537): at android.os.Looper.loop(Looper.java:123)
09-25 11:32:08.623: E/AndroidRuntime(537): at android.app.ActivityThread.main(ActivityThread.java:3683)
09-25 11:32:08.623: E/AndroidRuntime(537): at java.lang.reflect.Method.invokeNative(Native Method)
09-25 11:32:08.623: E/AndroidRuntime(537): at java.lang.reflect.Method.invoke(Method.java:507)
09-25 11:32:08.623: E/AndroidRuntime(537): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
09-25 11:32:08.623: E/AndroidRuntime(537): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
09-25 11:32:08.623: E/AndroidRuntime(537): at dalvik.system.NativeStart.main(Native Method)
09-25 11:32:08.623: E/AndroidRuntime(537): Caused by: java.lang.NullPointerException
09-25 11:32:08.623: E/AndroidRuntime(537): at android.support.v8.renderscript.Allocation.createFromBitmap(Allocation.java:1337)
09-25 11:32:08.623: E/AndroidRuntime(537): at android.support.v8.renderscript.Allocation.createFromBitmap(Allocation.java:1388)
09-25 11:32:08.623: E/AndroidRuntime(537): at com.example.gpurenderscript.MainActivity.onCreate(MainActivity.java:33)
09-25 11:32:08.623: E/AndroidRuntime(537): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
09-25 11:32:08.623: E/AndroidRuntime(537): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
09-25 11:32:08.623: E/AndroidRuntime(537): ... 11 more
非常感謝！