我有一个相对简单的应用程序,可以从菜单中启动相机。相机可以正常启动,但是在拍照后点击“确定”按钮时,我的Nexus One手机会出现空指针异常:
E/AndroidRuntime( 3891): java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=0, result=-1, data=null} to activity {net.asplode.tr/net.asplode.tr.PostImage}: java.lang.NullPointerException
E/AndroidRuntime( 3891): at android.app.ActivityThread.deliverResults(ActivityThread.java:3515)
E/AndroidRuntime( 3891): at android.app.ActivityThread.handleSendResult(ActivityThread.java:3557)
E/AndroidRuntime( 3891): at android.app.ActivityThread.access$2800(ActivityThread.java:125)
E/AndroidRuntime( 3891): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2063)
E/AndroidRuntime( 3891): at android.os.Handler.dispatchMessage(Handler.java:99)
E/AndroidRuntime( 3891): at android.os.Looper.loop(Looper.java:123)
E/AndroidRuntime( 3891): at android.app.ActivityThread.main(ActivityThread.java:4627)
E/AndroidRuntime( 3891): at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime( 3891): at java.lang.reflect.Method.invoke(Method.java:521)
E/AndroidRuntime( 3891): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
E/AndroidRuntime( 3891): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
E/AndroidRuntime( 3891): at dalvik.system.NativeStart.main(Native Method)
E/AndroidRuntime( 3891): Caused by: java.lang.NullPointerException
E/AndroidRuntime( 3891): at net.asplode.tr.PostImage.onActivityResult(PostImage.java:92)
E/AndroidRuntime( 3891): at android.app.Activity.dispatchActivityResult(Activity.java:3890)
E/AndroidRuntime( 3891): at android.app.ActivityThread.deliverResults(ActivityThread.java:3511)
E/AndroidRuntime( 3891): ... 11 more
W/ActivityManager( 85): Force finishing activity net.asplode.tr/.PostImage
代码:
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if (item.getItemId() == R.id.mnuCamera) {
Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
ContentValues values = new ContentValues();
values.put(Media.TITLE, "image");
Uri tempPhotoUri = getContentResolver().insert(Media.EXTERNAL_CONTENT_URI, values);
cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, tempPhotoUri);
startActivityForResult(cameraIntent, FROM_CAMERA);
return true;
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode != RESULT_OK) {
return;
}
Uri imageUri = data.getData();
Log.i("imageUri: ", imageUri.toString());
}