Android: Get an image from device

There are various situations in which you have to give user a facility to select an image from their android devices. For this giving user a File explorer could be a wrong thing, you have to open the gallery so that the user can select an image. Here is the code for this scenario.

Firstly you have to create a button on whose click we will open devices library. But before that you should have a READ_EXTERNAL_STORAGE permission.

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>

1	<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>

Also please remember that from API 23 and above there are Run-time permissions so you have to check for them like I did.

So I am going to have a Button and a EditText. On Buttons click we will open our gallery or any Image Viewer and in the EditText we will set the name of the image we selected.

Button bt = (Button) findViewById(R.id.choose_file_button);
bt.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View view) {
        if(Build.VERSION.SDK_INT>= Build.VERSION_CODES.M) {
            if (ContextCompat.checkSelfPermission(ProductActivity.this,
                    android.Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {
                ActivityCompat.requestPermissions(ProductActivity.this, new String[]{android.READ_EXTERNAL_STORAGE}, 1);
            } else {
                Intent intent = new Intent(Intent.ACTION_PICK);
                intent.setType("image/*");
                startActivityForResult(intent, 1);
            }
        } else {
            Intent intent = new Intent(Intent.ACTION_PICK);
            intent.setType("image/*");
            startActivityForResult(intent, 1);
        }
    }
});

Button bt = (Button) findViewById(R.id.choose_file_button);

bt.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View view) {

if(Build.VERSION.SDK_INT>= Build.VERSION_CODES.M) {

if (ContextCompat.checkSelfPermission(ProductActivity.this,

android.Manifest.permission.READ_EXTERNAL_STORAGE) != PackageManager.PERMISSION_GRANTED) {

ActivityCompat.requestPermissions(ProductActivity.this, new String[]{android.READ_EXTERNAL_STORAGE}, 1);

} else {

Intent intent = new Intent(Intent.ACTION_PICK);

intent.setType("image/*");

startActivityForResult(intent, 1);

}

} else {

Intent intent = new Intent(Intent.ACTION_PICK);

intent.setType("image/*");

startActivityForResult(intent, 1);

}

});

This line will create a dialog that will ask user for a permission, so we have to handle the user response to the permission as well and also the onActivityResult() method as well after all it will run when you select an image.

@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
    super.onRequestPermissionsResult(requestCode, permissions, grantResults);
    if (grantResults.length > 0
            && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
        Intent intent = new Intent(Intent.ACTION_PICK);
        intent.setType("image/*");
        startActivityForResult(intent, requestCode);
    }
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if (resultCode == RESULT_OK) {
        Uri selectedImageUri = data.getData();
        String[] projection = {MediaStore.Images.Media.DATA};
        CursorLoader loader = new CursorLoader(this, selectedImageUri, projection, null, null, null);
        Cursor cursor = loader.loadInBackground();
        if(cursor.moveToFirst()) {
            int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
            Uri imageUri = Uri.parse(cursor.getString(column_index));
            ((EditText) findViewById(R.id.selected_filename)).setText(imageUri.getLastPathSegment());
        }
        cursor.close();
    }
}

@Override

public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {

super.onRequestPermissionsResult(requestCode, permissions, grantResults);

if (grantResults.length > 0

&& grantResults[0] == PackageManager.PERMISSION_GRANTED) {

Intent intent = new Intent(Intent.ACTION_PICK);

intent.setType("image/*");

startActivityForResult(intent, requestCode);

}

@Override

protected void onActivityResult(int requestCode, int resultCode, Intent data) {

super.onActivityResult(requestCode, resultCode, data);

if (resultCode == RESULT_OK) {

Uri selectedImageUri = data.getData();

String[] projection = {MediaStore.Images.Media.DATA};

CursorLoader loader = new CursorLoader(this, selectedImageUri, projection, null, null, null);

Cursor cursor = loader.loadInBackground();

if(cursor.moveToFirst()) {

int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);

Uri imageUri = Uri.parse(cursor.getString(column_index));

((EditText) findViewById(R.id.selected_filename)).setText(imageUri.getLastPathSegment());

}

cursor.close();

}

And you have the image you wanted. You can load this image by converting it in a Bitmap or anything you want to do with it. For uploading this file to server you can follow this link.

Aastha

14 Dec, 2016
Updated by - Aastha
19 Aug, 2016
Created by - Aastha

. . .

1 comments

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Android: Get an image from device

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