[英]Picking image from gallery and set to imageview
I'm trying to pick image from gallery and set it to imageview. 我正在尝试从图库中选择图像并将其设置为imageview。
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
try {
// When an Image is picked
if (requestCode == RESULT_LOAD_IMG && resultCode == RESULT_OK
&& null != data) {
Log.e("1","1");
// Get the Image from data
Uri selectedImage = data.getData();
Log.e("2","2");
String[] filePathColumn = { MediaStore.Images.Media.DATA };
Log.e("3","3");
// Get the cursor
Cursor cursor = getContentResolver().query(selectedImage,
filePathColumn, null, null, null);
Log.e("4","4");
// Move to first row
cursor.moveToFirst();
Log.e("5", "5");
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
Log.e("6","6");
imgDecodableString = cursor.getString(columnIndex);
Log.e("7","7");
cursor.close();
ImageView imgView = (ImageView) findViewById(R.id.imgView);
Log.e("8","8");
// Set the Image in ImageView after decoding the String
imgView.setImageBitmap(BitmapFactory
.decodeFile(imgDecodableString));
} else {
Toast.makeText(this, "You haven't picked Image",
Toast.LENGTH_LONG).show();
}
} catch (Exception e) {
Toast.makeText(this, "Something went wrong", Toast.LENGTH_LONG)
.show();
}
}
In logs it shows only third log and after that shows toast which in catch. 在日志中,它仅显示第三个日志,然后显示在捕获中的吐司。 I'm using Samsung S4, and android version is 5.0.1. 我正在使用三星S4,而Android版本是5.0.1。 I think, problem is about cursor, but can't fix it. 我认为,问题是关于光标,但无法修复它。 Please help me. 请帮我。
Here is code I have used for Picking Gallery Image then display it to ImageView
. 这是我用于Picking Gallery Image的代码,然后将其显示给ImageView
。 You can use according to your need. 您可以根据自己的需要使用。
Here is method for opening Gallery Intent. 这是打开Gallery Intent的方法。
private static final int GALLERY_PHOTO = 111;
private void pickGalleryImage() {
Intent intent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
intent.setType("image/*");
startActivityForResult(chooserIntent, GALLERY_PHOTO);
}
then your onActivityResult()
method should be like this. 那么你的onActivityResult()
方法应该是这样的。 in this method mContext
refers Context of Activity
. 在此方法中, mContext
引用Activity
Context。 if Activity
name is MainActivity
then you can use MainActivity.this
如果Activity
名称是MainActivity
那么您可以使用MainActivity.this
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == GALLERY_PHOTO && resultCode == Activity.RESULT_OK) {
if (data.getData() != null) {
String filePath = GetFilePathFromDevice.getPath(mContext, data.getData());
Bitmap bm = BitmapFactory.decodeFile(filePath);
imgView.setImageBitmap(bm);
}
}
}
Here is GetFilePathFromDevice
class used in onActivityResult()
method to get file path of selected image from Gallery. 这是在onActivityResult()
方法中使用的GetFilePathFromDevice
类,用于从Gallery中获取所选图像的文件路径。
public final class GetFilePathFromDevice {
/**
* Get file path from URI
*
* @param context context of Activity
* @param uri uri of file
* @return path of given URI
*/
public static String getPath(final Context context, final Uri uri) {
final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
// DocumentProvider
if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {
// ExternalStorageProvider
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];
}
}
// DownloadsProvider
else if (isDownloadsDocument(uri)) {
final String id = DocumentsContract.getDocumentId(uri);
final Uri contentUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));
return getDataColumn(context, contentUri, null, null);
}
// MediaProvider
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);
}
}
// MediaStore (and general)
else if ("content".equalsIgnoreCase(uri.getScheme())) {
// Return the remote address
if (isGooglePhotosUri(uri))
return uri.getLastPathSegment();
return getDataColumn(context, uri, null, null);
}
// File
else if ("file".equalsIgnoreCase(uri.getScheme())) {
return uri.getPath();
}
return null;
}
public static String getDataColumn(Context context, Uri uri, String selection, String[] selectionArgs) {
Cursor cursor = null;
final String column = "_data";
final String[] projection = {column};
try {
cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs, null);
if (cursor != null && cursor.moveToFirst()) {
final int index = cursor.getColumnIndexOrThrow(column);
return cursor.getString(index);
}
} finally {
if (cursor != null)
cursor.close();
}
return null;
}
public static boolean isExternalStorageDocument(Uri uri) {
return "com.android.externalstorage.documents".equals(uri.getAuthority());
}
public static boolean isDownloadsDocument(Uri uri) {
return "com.android.providers.downloads.documents".equals(uri.getAuthority());
}
public static boolean isMediaDocument(Uri uri) {
return "com.android.providers.media.documents".equals(uri.getAuthority());
}
public static boolean isGooglePhotosUri(Uri uri) {
return "com.google.android.apps.photos.content".equals(uri.getAuthority());
}
}
I hope it helps you. 我希望它对你有所帮助。
Try this 尝试这个
private static int RESULT_LOAD_IMAGE = 1;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.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);
}
});
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK && null != data) {
Uri selectedImage = data.getData();
String[] filePathColumn = { MediaStore.Images.Media.DATA };
Cursor cursor = getContentResolver().query(selectedImage,
filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String picturePath = cursor.getString(columnIndex);
cursor.close();
ImageView imageView = (ImageView) findViewById(R.id.imgView);
imageView.setImageBitmap(BitmapFactory.decodeFile(picturePath));
}
}
}
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