java.lang.RuntimeException的：捕捉图像时未能提供结果ResultInfo [英] java.lang.RuntimeException: Failure delivering result ResultInfo when capturing image

问题描述

我的工作，允许拍照，并将其保存到SD卡上的目录中的应用程序。它工作正常，在大多数的设备，但是我得到这个错误在极少数的设备：

I'm working on an application that allows taking photos and saving them into a directory on the SD card. It works fine on most of the devices, but I'm getting this error on very few devices:

08-26 15:29:11.712 11925 11925 E AndroidRuntime: FATAL EXCEPTION: main
08-26 15:29:11.712 11925 11925 E AndroidRuntime: java.lang.RuntimeException: Failure    delivering result ResultInfo{who=null, request=0, result=-1, data=Intent { act=inline-data dat=file:///storage/emulated/0/.MyImgs/IMG_20132926032905.jpg typ=image/jpeg (has extras) }} to activity {com.example.myApp/com.example.myApp.Com}: java.lang.NullPointerException
08-26 15:29:11.712 11925 11925 E AndroidRuntime:    at android.app.ActivityThread.deliverResults(ActivityThread.java:3403)
08-26 15:29:11.712 11925 11925 E AndroidRuntime:    at android.app.ActivityThread.handleSendResult(ActivityThread.java:3446)
08-26 15:29:11.712 11925 11925 E AndroidRuntime:    at android.app.ActivityThread.access$1100(ActivityThread.java:150)
08-26 15:29:11.712 11925 11925 E AndroidRuntime:    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1324)
08-26 15:29:11.712 11925 11925 E AndroidRuntime:    at android.os.Handler.dispatchMessage(Handler.java:99)
08-26 15:29:11.712 11925 11925 E AndroidRuntime:    at android.os.Looper.loop(Looper.java:213)
08-26 15:29:11.712 11925 11925 E AndroidRuntime:    at android.app.ActivityThread.main(ActivityThread.java:5153)
08-26 15:29:11.712 11925 11925 E AndroidRuntime:    at java.lang.reflect.Method.invokeNative(Native Method)
08-26 15:29:11.712 11925 11925 E AndroidRuntime:    at java.lang.reflect.Method.invoke(Method.java:511)
08-26 15:29:11.712 11925 11925 E AndroidRuntime:    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
08-26 15:29:11.712 11925 11925 E AndroidRuntime:    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
08-26 15:29:11.712 11925 11925 E AndroidRuntime:    at dalvik.system.NativeStart.main(Native Method)
08-26 15:29:11.712 11925 11925 E AndroidRuntime: Caused by: java.lang.NullPointerException
08-26 15:29:11.712 11925 11925 E AndroidRuntime:    at android.os.Parcel.readException(Parcel.java:1445)
08-26 15:29:11.712 11925 11925 E AndroidRuntime:    at android.os.Parcel.readException(Parcel.java:1389)
08-26 15:29:11.712 11925 11925 E AndroidRuntime:    at android.content.IContentService$Stub$Proxy.notifyChange(IContentService.java:472)
08-26 15:29:11.712 11925 11925 E AndroidRuntime:    at android.content.ContentResolver.notifyChange(ContentResolver.java:1297)
08-26 15:29:11.712 11925 11925 E AndroidRuntime:    at android.content.ContentResolver.notifyChange(ContentResolver.java:1286)
08-26 15:29:11.712 11925 11925 E AndroidRuntime:    at android.content.ContentResolver.notifyChange(ContentResolver.java:1266)
-->08-26 15:29:11.712 11925 11925 E AndroidRuntime:     at com.example.myApp.Com.onActivityResult(Com.java:265)<--
08-26 15:29:11.712 11925 11925 E AndroidRuntime:    at android.app.Activity.dispatchActivityResult(Activity.java:5293)
08-26 15:29:11.712 11925 11925 E AndroidRuntime:    at android.app.ActivityThread.deliverResults(ActivityThread.java:3399)
08-26 15:29:11.712 11925 11925 E AndroidRuntime:    ... 11 more

下面是我如何创建我的文件夹，保存图像和启动相机

Here's how I create my folder, save images and launch camera

String root = Environment.getExternalStorageDirectory()+"/.MyImgs/";
File newDirectory = new File(root);
//create directory if it doesn't exist
if(!newDirectory.exists())
    newDirectory.mkdirs();

//create and name the image
SimpleDateFormat dateFormat = new SimpleDateFormat("yyyymmddhhmmss");
String date = dateFormat.format(new Date());
File f = new File(newDirectory,"IMG_"+date+".jpg");

//save image directory
mUri = Uri.fromFile(f);
// Result of activity: TAKE_PICTURE
startActivityForResult(i, TAKE_PICTURE); 

下面是发生错误的部分：

Here's the part where the error occurs:

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);

    if (resultCode == Activity.RESULT_OK) {
        getContentResolver().notifyChange(mUri, null);//line 265
    }
}

谁能帮我看看有什么不对吗？为什么它在某些设备上，但不能在其他人的工作？谢谢你。

Can anyone help me find what's wrong please? And why does it work on some devices but not on others? Thanks.

推荐答案

试试这个，这就像魅力对我来说工作：

Try this, it's working like charm for me:

private String selectedImagePath = "";
final private int PICK_IMAGE = 1;
final private int CAPTURE_IMAGE = 2;

public Uri setImageUri() {
    // Store image in dcim
    File file = new File(Environment.getExternalStorageDirectory() + "/DCIM/", "image" + new Date().getTime() + ".png");
    Uri imgUri = Uri.fromFile(file);
    this.imgPath = file.getAbsolutePath();
    return imgUri;
}


public String getImagePath() {
    return imgPath;
}

btnGallery.setOnClickListener(new OnClickListener() {
    @Override
    public void onClick(View v) {
        Intent intent = new Intent();
        intent.setType("image/*");
        intent.setAction(Intent.ACTION_GET_CONTENT);
        startActivityForResult(Intent.createChooser(intent, ""), PICK_IMAGE);
    }
});

btnCapture.setOnClickListener(new OnClickListener() {
    @Override
    public void onClick(View v) {
        final Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
        intent.putExtra(MediaStore.EXTRA_OUTPUT, setImageUri());
        startActivityForResult(intent, CAPTURE_IMAGE);
    }
});

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (resultCode != Activity.RESULT_CANCELED) {
        if (requestCode == PICK_IMAGE) {
            selectedImagePath = getAbsolutePath(data.getData());
            imgUser.setImageBitmap(decodeFile(selectedImagePath));
        } else if (requestCode == CAPTURE_IMAGE) {
            selectedImagePath = getImagePath();
            imgUser.setImageBitmap(decodeFile(selectedImagePath));
        } else {
            super.onActivityResult(requestCode, resultCode, data);
        }
    }
}


public Bitmap decodeFile(String path) {
    try {
        // Decode image size
        BitmapFactory.Options o = new BitmapFactory.Options();
        o.inJustDecodeBounds = true;
        BitmapFactory.decodeFile(path, 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 scale = 1;
        while (o.outWidth / scale / 2 >= REQUIRED_SIZE && o.outHeight / scale / 2 >= REQUIRED_SIZE)
            scale *= 2;
        // Decode with inSampleSize
        BitmapFactory.Options o2 = new BitmapFactory.Options();
        o2.inSampleSize = scale;
        return BitmapFactory.decodeFile(path, o2);
    } catch (Throwable e) {
        e.printStackTrace();
    }
    return null;
}

public String getAbsolutePath(Uri uri) {
    String[] projection = { MediaColumns.DATA };
    @SuppressWarnings("deprecation")
    Cursor cursor = managedQuery(uri, projection, null, null, null);
    if (cursor != null) {
        int column_index = cursor.getColumnIndexOrThrow(MediaColumns.DATA);
        cursor.moveToFirst();
        return cursor.getString(column_index);
    } else
        return null;
}

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