Android 2.3上的manageQuery错误：java.lang.RuntimeException

Question

我的错误只发生在某些手机上。例如，它发生在Android 2.3版本的手机中（在我的情况下是一个三星galaxy mini）。在我的设备中它完美运行（三星galaxy S2 Android v 4.0.4） 当我拍摄照片并尝试将其用于布局时，我在使用manageQuery的行中出现错误。这是我正在使用的代码：

    public String getRealPathFromURI(Uri contentUri) {
    String[] proj = { MediaStore.Images.Media.DATA };
    Cursor cursor = managedQuery(contentUri, proj, null, null, null);
    int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
    cursor.moveToFirst();
    return cursor.getString(column_index);
}

private Bitmap decodeFile(File f){
    try {
        //Decode image size
        BitmapFactory.Options o = new BitmapFactory.Options();
        o.inJustDecodeBounds = true;
        BitmapFactory.decodeStream(new FileInputStream(f),null,o);

        //The new size we want to scale to
        final int REQUIRED_SIZE=70;

        //Find the correct scale value. It should be the power of 2.
        int width_tmp=o.outWidth, height_tmp=o.outHeight;
        int scale=(int) 0.9;
        while(true){
            if(width_tmp/2<REQUIRED_SIZE || height_tmp/2<REQUIRED_SIZE)
                break;
            width_tmp/=2;
            height_tmp/=2;
            scale*=2;
        }

        //Decode with inSampleSize
        BitmapFactory.Options o2 = new BitmapFactory.Options();
        o2.inSampleSize=scale;
        return BitmapFactory.decodeStream(new FileInputStream(f), null, o2);
    } catch (FileNotFoundException e) {}
    return null;
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) { 
    super.onActivityResult(requestCode, resultCode, data); 
    switch(requestCode) { 
    case ChooseImageInputDialog.ACTIVITY_SELECT_PHOTO:
        if(resultCode == RESULT_OK){  
            Log.d("resultcode pea pick", "result ok");
            Uri selectedImageUri=data.getData();
            actualPath=getRealPathFromURI(selectedImageUri);
            File file=new File(actualPath);
            bmp=decodeFile(file); //this is new bitmap which you can use for your purpose 

            ByteArrayOutputStream os = new ByteArrayOutputStream();
            //bmp.compress(Bitmap.CompressFormat.PNG, 65, os);
            photoByteArray = os.toByteArray();
            ivPhoto.setImageBitmap(bmp);
        }else{
            Log.d("resultcode pea pick", "result not ok");
        }
        break;
    case ChooseImageInputDialog.ACTIVITY_CAMERA_PHOTO:
        if(resultCode == RESULT_OK){
            Bundle extras = data.getExtras();
            //bmp = (Bitmap)extras.get("data");
            Uri selectedImageUri=data.getData();
            actualPath=getRealPathFromURI(selectedImageUri);
            File file=new File(actualPath);
            bmp=decodeFile(file);
            ByteArrayOutputStream os = new ByteArrayOutputStream();
            //bmp.compress(Bitmap.CompressFormat.PNG, 65, os);
            photoByteArray = os.toByteArray();
            ivPhoto.setImageBitmap(bmp);
            actualPath = getRealPathFromURI(data.getData());
            Log.d("take pic actual path", actualPath);

        }
        break;
    }

错误如下：

        01-19 19:16:57.389: E/AndroidRuntime(3024): java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=1111, result=-1, data=Intent { act=inline-data (has extras) }} to activity {com.play.playwithme/com.play.playwithme.PhotoEditingActivity}: java.lang.NullPointerException
        01-19 19:16:57.389: E/AndroidRuntime(3024):     at android.app.ActivityThread.deliverResults(ActivityThread.java:2536)
        01-19 19:16:57.389: E/AndroidRuntime(3024):     at android.app.ActivityThread.handleSendResult(ActivityThread.java:2578)
        01-19 19:16:57.389: E/AndroidRuntime(3024):     at android.app.ActivityThread.access$2000(ActivityThread.java:117)
        01-19 19:16:57.389: E/AndroidRuntime(3024):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:965)
        01-19 19:16:57.389: E/AndroidRuntime(3024):     at android.os.Handler.dispatchMessage(Handler.java:99)
        01-19 19:16:57.389: E/AndroidRuntime(3024):     at android.os.Looper.loop(Looper.java:130)
        01-19 19:16:57.389: E/AndroidRuntime(3024):     at android.app.ActivityThread.main(ActivityThread.java:3687)
        01-19 19:16:57.389: E/AndroidRuntime(3024):     at java.lang.reflect.Method.invokeNative(Native Method)
        01-19 19:16:57.389: E/AndroidRuntime(3024):     at java.lang.reflect.Method.invoke(Method.java:507)
        01-19 19:16:57.389: E/AndroidRuntime(3024):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:867)
        01-19 19:16:57.389: E/AndroidRuntime(3024):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:625)
        01-19 19:16:57.389: E/AndroidRuntime(3024):     at dalvik.system.NativeStart.main(Native Method)
        01-19 19:16:57.389: E/AndroidRuntime(3024): Caused by: java.lang.NullPointerException
        01-19 19:16:57.389: E/AndroidRuntime(3024):     at android.content.ContentResolver.acquireProvider(ContentResolver.java:743)
        01-19 19:16:57.389: E/AndroidRuntime(3024):     at android.content.ContentResolver.query(ContentResolver.java:256)
        01-19 19:16:57.389: E/AndroidRuntime(3024):     at android.app.Activity.managedQuery(Activity.java:1550)
        01-19 19:16:57.389: E/AndroidRuntime(3024):     at com.play.playwithme.PhotoEditingActivity.getRealPathFromURI(PhotoEditingActivity.java:133)
        01-19 19:16:57.389: E/AndroidRuntime(3024):     at com.play.playwithme.PhotoEditingActivity.onActivityResult(PhotoEditingActivity.java:193)
        01-19 19:16:57.389: E/AndroidRuntime(3024):     at android.app.Activity.dispatchActivityResult(Activity.java:3908)