I have 3 activities say A, B and C.
A calls B.
When B doesn't call C it returns to A. But when B calls C it doesn't return to A, the app stops.
Now the real problem is, from activity A I want to call an image picker and crop the image. That's Activity B which crops and calls C for picking image.
Activity A:
iv_profile_pic.setOnClickListener(new View.OnClickListener() {//iv_profile_pic is an ImageView
@Override
public void onClick(View view) {
Intent i=new Intent(MainActivity.this,profile_pic_chooser.class);
i.setFlags(0);
MainActivity.this.startActivityForResult(i, 999);
Toast.makeText(getApplicationContext(),"Reached",Toast.LENGTH_SHORT).show();
}
});
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data)
{
if (requestCode == 999) {
Bitmap image=data.getParcelableExtra("picture");
iv_profile_pic.setImageBitmap(image);
}
}
Activity B:
It has 2 buttons. Load and Crop. Load when clicked calls ImageChooserIntent and chooses an image which is opened in B with guidlines to crop.
Crop when clicked should return back to A the cropped image.
If crop is called without calling load, it returns to A with null, of-course. But if Load is clicked first and then Crop is called, the app simply stops.
public void onLoadImageClick(View view) {
startActivityForResult(getPickImageChooserIntent(), 200);
}
public void onCropImageClick(View view) {
Bitmap cropped = mCropImageView.getCroppedImage(500, 500);
if (cropped != null) {
mCropImageView.setImageBitmap(cropped);
iv.setImageBitmap(cropped);
Intent returnIntent = new Intent();
returnIntent.putExtra("picture", cropped);
setResult(Activity.RESULT_OK, returnIntent);
finish();
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == Activity.RESULT_OK) {
Uri imageUri = getPickImageResultUri(data);
// For API >= 23 we need to check specifically that we have permissions to read external storage,
// but we don't know if we need to for the URI so the simplest is to try open the stream and see if we get error.
boolean requirePermissions = false;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M &&
checkSelfPermission(Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED &&
isUriRequiresPermissions(imageUri)) {
// request permissions and handle the result in onRequestPermissionsResult()
requirePermissions = true;
mCropImageUri = imageUri;
requestPermissions(new String[]{Manifest.permission.READ_EXTERNAL_STORAGE}, 0);
}
if (!requirePermissions) {
mCropImageView.setImageUriAsync(imageUri);
}
}
}
I got a workaround. The most probable problem I was facing was:
I was using an external library for cropping the image. This library did 2 things.
First, selected an image using imageChooser intent.
Second, Cropped that image.
After the library cropped the image, it wasn't saving the cropped image in local/external storage. But I was trying to pass it back to parent directory.
There's the problem. The file doesn't exist and still I am trying to use it. The application terminates.
So my workaround was,
• Save the bitmap in storage
• Pass the Uri to parent
• Extract that Uri from child
• Make bitmap from that Uri
• Apply on the ImageView
So Activity B had:
public void onCropImageClick(View view) {
Bitmap cropped = mCropImageView.getCroppedImage(500, 500);
if (cropped != null) {
mCropImageView.setImageBitmap(cropped);
iv.setImageBitmap(cropped);
File externalStorageDirectory = Environment.getExternalStorageDirectory();
externalStorageDirectory= new File(externalStorageDirectory , "FOLDERNAME");
if(!createDirIfNotExists(externalStorageDirectory)){
Toast.makeText(this,"Failed creating Directory!",Toast.LENGTH_SHORT).show();
}else{
File filename=new File(externalStorageDirectory, String.valueOf(Calendar.getInstance().getTimeInMillis())+".PNG");
FileOutputStream out = null;
try {
out = new FileOutputStream(filename);
cropped.compress(Bitmap.CompressFormat.PNG, 100, out); // cropped is your Bitmap instance
// PNG is a lossless format, the compression factor (100) is ignored
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (out != null) {
out.close();
Intent returnIntent = new Intent();
returnIntent.putExtra("picture", Uri.fromFile(filename));
setResult(RESULT_OK, returnIntent);
finish();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
//Toast.makeText(this,mCropImageUri.toString(),Toast.LENGTH_SHORT).show();
}
And Activity A had:
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data)
{
if (requestCode == 999 && resultCode==RESULT_OK) {
Uri path=data.getParcelableExtra("picture");
Bitmap bitmap=null;
try {
bitmap= MediaStore.Images.Media.getBitmap(this.getContentResolver(), path);
} catch (IOException e) {
e.printStackTrace();
}
Toast.makeText(this,path.toString(),Toast.LENGTH_SHORT).show();
if (bitmap!=null){
iv_profile_pic.setImageBitmap(bitmap);
}
}
Maybe my problem statement is wrong, but workaround works. Any edits/suggestions
are 100% welcome. Just in-case someone like me gets stuck, this might help!