应用程序从库加载图像时崩溃 [英] App crashes when loading image from gallery

问题描述

在我的应用程序，我有两个按钮，一个用于加载图像从画廊（从设备），另一个用于拍照被accesing设备的摄像头，我的code正常工作在某些设备上，BT在某些设备上，单击该gallery.Can人的图像时，应用程序崩溃帮我找出实际propblem ??

In my app ,i have two buttons ,one for loading the image from gallery(from device )and another one for taking pictures by accesing the camera of the device,My code is working properly on some devices ,bt in some devices ,the app crashes when clicking an image in the gallery.Can anybody help me to find out the actual propblem??

public class MainActivity extends ActionBarActivity {
private static int RESULT_LOAD_IMAGE = 1;
private static final int CAMERA_REQUEST = 1888;
private ImageView imageView;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Button buttonLoadImage = (Button) findViewById(R.id.buttonLoadPicture);
    buttonLoadImage.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View arg0) {

            Intent i = new Intent(
                    Intent.ACTION_PICK,
                    android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);

            startActivityForResult(i, RESULT_LOAD_IMAGE);
        }
    });
    this.imageView = (ImageView)this.findViewById(R.id.imgView);
    Button photoButton = (Button) this.findViewById(R.id.button2);
    photoButton.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
            startActivityForResult(cameraIntent, CAMERA_REQUEST);
        }
    });
}

和XML是

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent">
<ImageView android:id="@+id/imgView"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_weight="1"></ImageView>
<RelativeLayout
    android:id="@+id/relativeLayout1"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:background="@android:color/black" >
<Button android:id="@+id/buttonLoadPicture"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"

    android:layout_weight="0"
    android:text="Load Picture"
    android:layout_gravity="center"></Button>
    <Button
        android:id="@+id/button2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Take Picture"
        android:layout_alignParentRight="true"/>

</RelativeLayout>

推荐答案

这是问题Lollypop + 设备，所以我们必须写2个逻辑处理LoolyPop跌破并放;以上的Andr​​oid版本来处理展厅形象。

This is issue in Lollypop+ devices so we have to write 2 logic to process LoolyPop below & above android versions to process the gallery Image.

开始图库图片选择器意图，

Intent intent = new Intent();
        intent.setType("image/*");
        intent.setAction(Intent.ACTION_GET_CONTENT);
        mContext.startActivityForResult(
                Intent.createChooser(intent, "Complete action using"),
                DigitalCareContants.IMAGE_PICK);

处理图像，

• 方法来接收图像路径：

• Method to receive Image Path :

private static String getPath(final Context context, final Uri uri) {

final boolean isKitKat = Build.VERSION.SDK_INT >= 19;


if (isKitKat && DocumentsContract.isDocumentUri(uri)) {

    if (isExternalStorageDocument(uri)) {
        final String docId = DocumentsContract.getDocumentId(uri);
        final String[] split = docId.split(":");
        final String type = split[0];

        if ("primary".equalsIgnoreCase(type)) {
            return Environment.getExternalStorageDirectory() + "/"
                    + split[1];
        }
    }

    else if (isDownloadsDocument(uri)) {

        final String id = DocumentsContract.getDocumentId(uri);
        long mId = Long.parseLong(id);
        Uri mUri = Uri.parse("content://downloads/public_downloads");
        final Uri contentUri = ContentUris.withAppendedId(mUri, mId);

        return getDataColumn(context, contentUri, null, null);
    }

    else if (isMediaDocument(uri)) {
        final String docId = DocumentsContract.getDocumentId(uri);
        final String[] split = docId.split(":");
        final String type = split[0];

        Uri contentUri = null;
        if ("image".equals(type)) {
            contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
        } else if ("video".equals(type)) {
            contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
        } else if ("audio".equals(type)) {
            contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
        }

        final String selection = "_id=?";
        final String[] selectionArgs = new String[] { split[1] };

        return getDataColumn(context, contentUri, selection,
                selectionArgs);
    }
}

else if ("content".equalsIgnoreCase(uri.getScheme())) {
    return getDataColumn(context, uri, null, null);
}

else if ("file".equalsIgnoreCase(uri.getScheme())) {
    return uri.getPath();
}

return null;}
}

收到的画廊选择器意图处理：

Received Gallery picker intent Processing :

    if(requestcode == 1000)
    {
    String[] filePathColumn = { MediaStore.Images.Media.DATA };
    Uri selectedImage = data.getData();

    if (Build.VERSION.SDK_INT >= 19) {
        InputStream input;
        Bitmap bitmap;
        String picturePath = getPath(mActivity, selectedImage);
        try {
            input = mActivity.getContentResolver().openInputStream(
                    selectedImage);
            bitmap = BitmapFactory.decodeStream(input);
            Log.d("IMAGE", "Received Image Bitmap : " + bitmap);
            Log.d("IMAGE", "Received Image Bitmap Path : " + picturePath);
        } catch (FileNotFoundException e1) {

        }
    } else {
        Log.d(TAG, "Android Version is 18 below");
        Cursor cursor = mActivity.getContentResolver().query(
                selectedImage, filePathColumn, null, null, null);
        cursor.moveToFirst();

        int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
        String picturePath = cursor.getString(columnIndex);
        Log.d("IMAGE", "Received Image Bitmap Path : " + picturePath);
        BitmapFactory.Options options = new BitmapFactory.Options();
        options.inPreferredConfig = Bitmap.Config.ARGB_8888;
        Bitmap bitmap = BitmapFactory.decodeFile(picturePath, options);
        Log.d("IMAGE", "Received Image Bitmap : " + bitmap);
        Log.d("IMAGE", "Received Image Bitmap Path : " + picturePath);
        cursor.close();
    }
    }       

- 注：请务必在下面添加类的包。它已被复制从Lollypop开源$ C ​​$ C。

  public class DocumentsContract {
  private static final String DOCUMENT_URIS =
"com.android.providers.media.documents " +
"com.android.externalstorage.documents " +
"com.android.providers.downloads.documents " +
"com.android.providers.media.documents";

private static final String PATH_DOCUMENT = "document";
private static final String TAG = DocumentsContract.class.getSimpleName();

public static String getDocumentId(Uri documentUri) {
final List<String> paths = documentUri.getPathSegments();
if (paths.size() < 2) {
    throw new IllegalArgumentException("Not a document: " + documentUri);
}

if (!PATH_DOCUMENT.equals(paths.get(0))) {
    throw new IllegalArgumentException("Not a document: " + documentUri);
}
return paths.get(1);
}

public static boolean isDocumentUri(Uri uri) {
final List<String> paths = uri.getPathSegments();
Log.d(TAG, "paths[" + paths + "]");
if (paths.size() < 2) {
    return false;
}
if (!PATH_DOCUMENT.equals(paths.get(0))) {
    return false;
}
return DOCUMENT_URIS.contains(uri.getAuthority());
}
}

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