Nexus Camera--永不返回数据

时间:2012-07-11 15:50:59

标签: android

在应用程序中,我允许用户将他们的头像图片更改为他们选择的一个。然后将图片(一旦裁剪)存储在应用程序的私有上下文中。我已经取得了很大的成功,但是,在Nexus上,相机永远不会返回数据,因此该方法可以继续前进。它只是坐着等待,直到你必须手动强制关闭应用程序。它正在开发其他4.0 ICS设备,但不在Nexus上.Nexus允许用户从他们的画廊中选择并且它工作正常,只是在拍摄新照片时。是否有一个技巧让这个工作?

以下是代码的一部分:

请再次注意,这可以在其他设备上运行而不会出现问题:

final String [] items = new String [] {“Take from camera”,“Select from gallery”};
        ArrayAdapter adapter = new ArrayAdapter(this,android.R.layout.select_dialog_item,items);         AlertDialog.Builder builder = new AlertDialog.Builder(this);

    builder.setTitle("Select Image");
    builder.setAdapter(adapter, new DialogInterface.OnClickListener() {
        public void onClick( DialogInterface dialog, int item ) { //take picture
            if (item == 0) {
                Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
                try {
                    intent.putExtra("return-data", true);
                    startActivityForResult(intent, PICK_FROM_CAMERA);
                } catch (ActivityNotFoundException e) {
                    e.printStackTrace();
                }
            } else { //pick from file
                Intent intent = new Intent();

                intent.setType("image/*");
                intent.setAction(Intent.ACTION_GET_CONTENT);

                startActivityForResult(Intent.createChooser(intent, "Complete action using"), PICK_FROM_FILE);
            }
        }
    });

    final AlertDialog dialog = builder.create();
    mImageView = (ImageView) findViewById(R.id.me_photo);
    File file = new File(context.getCacheDir(), "Avatar"+".png");
    if (file.exists()) {


        //Log.i("CACHE_test", file.getPath());

        Bitmap bitmap = BitmapFactory.decodeFile(file.getPath());

        mImageView.setImageBitmap(bitmap);
    }

    mImageView.setOnClickListener(new View.OnClickListener(){
        public void onClick(View arg0) {
            dialog.show();
        }
    });
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (resultCode != RESULT_OK) return;
    switch (requestCode) {
        case PICK_FROM_CAMERA:
            mImageCaptureUri= data.getData();
            doCrop();
            break;
        case PICK_FROM_FILE: 
            mImageCaptureUri = data.getData();
            doCrop();
            break;          
        case CROP_FROM_CAMERA:          
            Bundle extras = data.getExtras();
            if (extras != null) {               
                Bitmap photo =(Bitmap) data.getExtras().get("data");
                        //extras.getParcelable("data");
                mImageView.setImageBitmap(photo);
               // FileOutputStream fos = null;
                File file = new File(context.getCacheDir(), "Avatar"+".png");


                    try {
                        file.createNewFile();
                        FileOutputStream fos = new FileOutputStream(file);

                        photo.compress(Bitmap.CompressFormat.PNG, 95, fos);
                    } catch (IOException e) {
                        // TODO Auto-generated catch block
                        Toast.makeText(this, "Sorry, Camera Crashed-Please Report as Crash A.", Toast.LENGTH_LONG).show();
                    } 
            }

            break;
    }
}

1 个答案:

答案 0 :(得分:4)

这是一个常见问题, 某些型号的设备使用不同的额外密钥属性,

所以命令为
Bitmap photo =(Bitmap) data.getExtras().get("data");

可以指向null元素或小缩略图元素

看看this article