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Mario López Batres
Asked: 2020-11-14 01:47:26 +0800 CST 2020-11-14 01:47:26 +0800 CST

Problems accessing gallery Android Studio

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I am designing my first Android App and I am facing the following problem:

When I access my gallery by pressing a button, the images I can use are those that come from the "Download" and "Screenshot" directories. The rest fail me.

Also, this only works when I access from "Gallery" and not "Photos". My Android version is 4.3 (I mention it in case it has any relevance, since the code in some parts needs a higher one)

I am attaching a picture to make it all clearer:

enter image description here

As for the code (it might be a bit chaotic. Like I said, I'm new to this):

import static android.Manifest.permission.CAMERA;
import static android.Manifest.permission.WRITE_EXTERNAL_STORAGE;


public class RegistroActivity extends AppCompatActivity {
private static String APP_DIRECTORY = "MyPictureApp/";
private static String MEDIA_DIRECTORY = APP_DIRECTORY + "PictureApp";

private final int MY_PERMISSIONS = 100;
private final int SELECT_PICTURE = 300;

private ImageView mSetImage;
private Button mOptionButton;
private RelativeLayout mRlView;

private String mPath;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    setContentView(R.layout.activity_registro);
        Button bt_listo = (Button) findViewById(R.id.bt_listo);
        bt_listo.setOnClickListener(new View.OnClickListener()  {
            @Override
            public void onClick(View v){
                Toast toast1 =
                        Toast.makeText(getApplicationContext(),
                                "Registrado Correctamente", Toast.LENGTH_SHORT);
                toast1.show();
                Intent intent_registrar = new Intent(RegistroActivity.this, MainActivity.class);
                startActivity(intent_registrar);
            }
        });

    mSetImage = (ImageView) findViewById(R.id.ibt_imagen);
    mOptionButton = (Button) findViewById(R.id.bt_galeria);

    mRlView = (RelativeLayout) findViewById(R.id.id_registroactivity);

    if(mayRequestStoragePermission())
        mOptionButton.setEnabled(true);
    else
        mOptionButton.setEnabled(false);

    mOptionButton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {

            Log.i("X: "+ mOptionButton.getX(), "Y: " + mOptionButton.getY());
            mOptionButton.setVisibility(View.GONE);
            Intent intent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
            intent.setType("image/*");
            startActivityForResult(intent.createChooser(intent, "Seleccionar imagen"), SELECT_PICTURE);
        }
    });
}

@Override
public void onBackPressed(){

}

private boolean mayRequestStoragePermission() {

    if(Build.VERSION.SDK_INT < Build.VERSION_CODES.M)
        return true;

    if((checkSelfPermission(WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED) &&
            (checkSelfPermission(CAMERA) == PackageManager.PERMISSION_GRANTED))
        return true;

    if((shouldShowRequestPermissionRationale(WRITE_EXTERNAL_STORAGE)) || (shouldShowRequestPermissionRationale(CAMERA))){
        Snackbar.make(mRlView, "Permisos requeridos",
                Snackbar.LENGTH_INDEFINITE).setAction(android.R.string.ok, new View.OnClickListener() {
            @TargetApi(Build.VERSION_CODES.M)
            @Override
            public void onClick(View v) {
                requestPermissions(new String[]{WRITE_EXTERNAL_STORAGE, CAMERA}, MY_PERMISSIONS);
            }
        });
    }else{
        requestPermissions(new String[]{WRITE_EXTERNAL_STORAGE, CAMERA}, MY_PERMISSIONS);
    }

    return false;
}

@Override
public void onSaveInstanceState(Bundle outState) {
    super.onSaveInstanceState(outState);
    outState.putString("file_path", mPath);
}

@Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
    super.onRestoreInstanceState(savedInstanceState);

    mPath = savedInstanceState.getString("file_path");
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);

    if(resultCode == RESULT_OK){
        Uri path = data.getData();
        mSetImage.setImageURI(path);
        mSetImage.requestLayout();
        mSetImage.getLayoutParams().height = 140;
        mSetImage.getLayoutParams().width = 140;

        Toast.makeText(RegistroActivity.this, "Imagen cargada", Toast.LENGTH_SHORT).show();

    }
}

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

    if(requestCode == MY_PERMISSIONS){
        if(grantResults.length == 2 && grantResults[0] == PackageManager.PERMISSION_GRANTED && grantResults[1] == PackageManager.PERMISSION_GRANTED){
            Toast.makeText(RegistroActivity.this, "Permisos aceptados", Toast.LENGTH_SHORT).show();
            mOptionButton.setEnabled(true);
        }
    }else{
        showExplanation();
    }
}

private void showExplanation() {
    AlertDialog.Builder builder = new AlertDialog.Builder(RegistroActivity.this);
    builder.setTitle("Permisos denegados");
    builder.setMessage("Permisos requeridos");
    builder.setPositiveButton("Aceptar", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
            Intent intent = new Intent();
            intent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
            Uri uri = Uri.fromParts("package", getPackageName(), null);
            intent.setData(uri);
            startActivity(intent);
        }
    });
    builder.setNegativeButton("Cancelar", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) {
            dialog.dismiss();
            finish();
        }
    });

    builder.show();
}

}

<?xml version="1.0" encoding="utf-8"?>


<EditText
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/pt_alias"
    android:layout_centerVertical="true"
    android:hint="@string/pt_alias"
    android:layout_alignLeft="@+id/bt_listo"
    android:layout_alignStart="@+id/bt_listo"
    android:layout_alignRight="@+id/ibt_imagen"
    android:layout_alignEnd="@+id/ibt_imagen" />

<EditText
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/pt_correoElectronico"
    android:layout_below="@+id/pt_alias"
    android:layout_alignRight="@+id/pt_alias"
    android:layout_alignEnd="@+id/pt_alias"
    android:hint="@string/pt_email"
    android:layout_alignLeft="@+id/pt_alias"
    android:layout_alignStart="@+id/pt_alias" />

<EditText
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/pt_contraseña"
    android:layout_below="@+id/pt_correoElectronico"
    android:layout_alignRight="@+id/pt_correoElectronico"
    android:layout_alignEnd="@+id/pt_correoElectronico"
    android:hint="@string/pt_contraseña"
    android:layout_alignLeft="@+id/pt_correoElectronico"
    android:layout_alignStart="@+id/pt_correoElectronico" />

<EditText
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/pt_repetirContraseña"
    android:layout_below="@+id/pt_contraseña"
    android:layout_alignRight="@+id/pt_contraseña"
    android:layout_alignEnd="@+id/pt_contraseña"
    android:hint="@string/pt_repetirPass"
    android:layout_marginBottom="30dp"
    android:layout_alignLeft="@+id/pt_contraseña"
    android:layout_alignStart="@+id/pt_contraseña" />

<Button
    android:layout_width="250dp"
    android:layout_height="wrap_content"
    android:id="@+id/bt_listo"
    android:layout_below="@+id/pt_repetirContraseña"
    android:layout_centerHorizontal="true"
    android:text="@string/bt_listo"
    android:clickable="true"
    />

<ImageView
    android:layout_width="180dp"
    android:layout_height="180dp"
    android:id="@+id/logoRegistro"
    android:background="@drawable/logofinal"
    android:layout_alignParentTop="true"
    android:layout_centerHorizontal="true"
    android:layout_marginTop="20dp"/>

<ImageView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/ibt_imagen"
    android:clickable="true"
    android:layout_above="@+id/pt_alias"
    android:layout_alignRight="@+id/bt_listo"
    android:layout_alignEnd="@+id/bt_listo"
    android:gravity="right"
    />

<Button
    style="?android:attr/buttonStyleSmall"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/bt_galeria"
    android:background="@drawable/foto"
    android:layout_alignBottom="@+id/ibt_imagen"
    android:layout_alignRight="@+id/ibt_imagen"
    android:layout_alignEnd="@+id/ibt_imagen" />

And the error displayed:

11-13 10:35:52.826 3137-3137/mario.rankit E/AndroidRuntime: FATAL EXCEPTION: main
                                                        java.lang.OutOfMemoryError
                                                            at android.graphics.BitmapFactory.nativeDecodeStream(Native Method)
                                                            at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:623)
                                                            at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:444)
                                                            at android.graphics.drawable.Drawable.createFromResourceStream(Drawable.java:832)
                                                            at android.graphics.drawable.Drawable.createFromStream(Drawable.java:783)
                                                            at android.widget.ImageView.resolveUri(ImageView.java:673)
                                                            at android.widget.ImageView.setImageURI(ImageView.java:407)
                                                            at mario.rankit.RegistroActivity.onActivityResult(RegistroActivity.java:137)
                                                            at android.app.Activity.dispatchActivityResult(Activity.java:5563)
                                                            at android.app.ActivityThread.deliverResults(ActivityThread.java:3496)
                                                            at android.app.ActivityThread.handleSendResult(ActivityThread.java:3543)
                                                            at android.app.ActivityThread.access$1200(ActivityThread.java:159)
                                                            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1364)
                                                            at android.os.Handler.dispatchMessage(Handler.java:99)
                                                            at android.os.Looper.loop(Looper.java:176)
                                                            at android.app.ActivityThread.main(ActivityThread.java:5419)
                                                            at java.lang.reflect.Method.invokeNative(Native Method)
                                                            at java.lang.reflect.Method.invoke(Method.java:525)
                                                            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1046)
                                                            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:862)
                                                            at dalvik.system.NativeStart.main(Native Method)

I was wondering if anyone knew how to fix it. All the best.

java

1 Answers

  1. Best Answer

    The problem related to OutOfMemoryErroris due to the fact that it does not have the capacity to store one or several images in memory, I suggest this answer where you will get ideas to optimize your resources:

    The theme of the galleries created from a widget Galleryhas always been a problem, the problems are basically related to the fact that the images, when loaded within the execution of getView(), are loaded within it, ImageViewbut when ImageViewit is not visible, they are not released from it , you are actually loading the images and keeping them even without being displayed.

    A quick fix is ​​to remove the image from the ImageView when it is not displayed using setBackgroundDrawable() by assigning it a null value:

    miImageView.setBackgroundDrawable(null);

    But there are other important considerations such as the weight of the image, on small devices sometimes it is not necessary to load a large image since its manipulation in memory is difficult and even more so if we have several instances we will cause OutofMemory.

    I suggest you review these optimization tips: Good image resolution

    and in the case of your gallery I recommend using Picasso or Glide within

     public View getView(int position, View convertView, ViewGroup parent) {
 ...
 ...

    to load the images inside the ImageView, I am not recommending libraries but in this case there are 2 good options that I recommend, in fact they optimize the image that they load inside the ImageView, this results in a low memory consumption which will avoid problems related to OutofMemory.

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