【发布时间】：2021-09-22 23:59:37
【问题描述】：
我需要从图库中获取图片。我可以打开图库以选择图像，但在选择图像后它不会返回任何内容。我需要将 fileUri 发送到另一个活动并在 ImageView 上显示它。
我可以做这个相机，就像点击按钮一样，它会调用相机，然后我捕捉图像并将其发送到另一个活动。
但我不明白我在画廊中使用什么。有人请帮我解决这个问题。
更新
这是我用来从相机获取图像的
private void captureImage() {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
fileUri = getOutputMediaFileUri(MEDIA_TYPE_IMAGE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);
// start the image capture Intent
startActivityForResult(intent, CAMERA_CAPTURE_IMAGE_REQUEST_CODE);
}
这是 m 用于从图库中获取图像 但我想以与 captureImage() 相同的方式执行此操作，以便我可以将 ImageUri 发送到其他活动
private void browseImage(){
try {
Intent galleryIntent = new Intent(Intent.ACTION_PICK,
android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
// Start the Intent
fileUri = getOutputMediaFileUri(PICK_IMAGE);//this is m using for camera
Log.w("ImageAddressOnClick pr", ""+fileUri);
startActivityForResult(galleryIntent, GALLERY_IMAGE_PICK);
} catch (Exception e) {
Toast.makeText(getApplicationContext(),
e.getMessage()+"ye show hora h",
Toast.LENGTH_LONG).show();
Log.e(e.getClass().getName(), e.getMessage(), e);
}
OnActivityResult 方法
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// if the result is capturing Image
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == CAMERA_CAPTURE_IMAGE_REQUEST_CODE) {
if (resultCode == RESULT_OK) {
// successfully captured the image
// launching upload activity
launchUploadActivity(true);
} else if (resultCode == RESULT_CANCELED) {
// user cancelled Image capture
Toast.makeText(getApplicationContext(),
"User cancelled image capture", Toast.LENGTH_SHORT)
.show();
} else {
// failed to capture image
Toast.makeText(getApplicationContext(),
"Sorry! Failed to capture image", Toast.LENGTH_SHORT)
.show();
}
}
else if(requestCode == GALLERY_IMAGE_PICK && resultCode == RESULT_OK
&& null != data)
{
Uri selectedImage = data.getData();
String[] filePathColumn = { MediaStore.Images.Media.DATA };
Log.w("onActivityResult", "chali ye onActivityResult "+selectedImage);
// Get the cursor
Cursor cursor = getContentResolver().query(selectedImage,
filePathColumn, null, null, null);
// Move to first row
cursor.moveToFirst();
//int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
// imgDecodableString = cursor.getString(columnIndex);
cursor.close();
launchUploadActivity(true);
}
}
private void launchUploadActivity(boolean isImage){
Intent i = new Intent(MainActivity.this, UploadActivity.class);
i.putExtra("filePath", fileUri.getPath());
i.putExtra("isImage", isImage);
startActivity(i);
}
/**
* ------------ Helper Methods ----------------------
* */
/**
* Creating file uri to store image/video
*/
public Uri getOutputMediaFileUri(int type) {
return Uri.fromFile(getOutputMediaFile(type));
}
/**
* returning image / video
*/
private static File getOutputMediaFile(int type) {
// External sdcard location
File mediaStorageDir = new File(
Environment
.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES),
Config.IMAGE_DIRECTORY_NAME);
// Create the storage directory if it does not exist
if (!mediaStorageDir.exists()) {
if (!mediaStorageDir.mkdirs()) {
Log.d(TAG, "Oops! Failed create "
+ Config.IMAGE_DIRECTORY_NAME + " directory");
return null;
}
}
// Create a media file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss",
Locale.getDefault()).format(new Date());
File mediaFile;
if (type == MEDIA_TYPE_IMAGE) {
mediaFile = new File(mediaStorageDir.getPath() + File.separator
+ "IMG_" + timeStamp + ".jpg");
} else {
return null;
}
return mediaFile;
}
我正在通过launchUploadActivity()发送数据；
在此先感谢 :)
【问题讨论】：
-
你要开始一个新的intent，startactivitytrace在哪里？你能给我们看看吗
标签： android