CODEWITHSUNDEEP
androidandroid-studiosharedpreferences
Agustin Val
Agustin Val

Reputation: 187

Save and show an image in Android Studio

I want to know how can I do to save and show an image in the image view.

My app has 2 buttons and depending on which button was pressed the image view gets an image. What I want to do is to save that image and when I open the app again the chosen image is still there.

The only way I know to save something is shared preferences but in this case it doesn't work.

Someone can help me? Thanks

This is my code:

public class MainActivity extends AppCompatActivity {

    ImageView imagen;
    Button boton;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        imagen = (ImageView) findViewById(R.id.imagen);
        boton = (Button) findViewById(R.id.boton);

        SharedPreferences preferences= getSharedPreferences("Preferencias", MODE_PRIVATE);
        String imagen= preferences.getString("Imagen", null);
    }

    public void boton1(View view){

        imagen.setImageResource(R.drawable.imagen1);

        SharedPreferences preferences = getSharedPreferences("Preferencias", Context.MODE_PRIVATE);
        SharedPreferences.Editor editor = preferences.edit();
        editor.putString("Imagen", imagen.getResources().toString());
        editor.apply();
    }

    public void boton2(View view){

        imagen.setImageResource(R.drawable.imagen2);

        SharedPreferences preferences = getSharedPreferences("Preferencias", Context.MODE_PRIVATE);
        SharedPreferences.Editor editor = preferences.edit();
        editor.putString("Imagen", imagen.getResources().toString());
        editor.apply();
    }

}

Upvotes: 0

Views: 115

Answers (1)

HelloSadness
HelloSadness

Reputation: 955

You could save the URI in String format of the drawable in your shared preference. Like this (rename yourImageName by the drawable name) : 

Uri imageUri = Uri.parse("android.resource://"+context.getPackageName()+"/drawable/yourImageName");
String uri_toString = imageUri.toString();  

SharedPreferences preferences = getSharedPreferences("Preferencias", Context.MODE_PRIVATE);
SharedPreferences.Editor editor = preferences.edit();
editor.putString("imageUri", uri_toString);
editor.apply();

In your MainActivity, in onResume set the image source of your ImageView like this : 

SharedPreferences preferences = getSharedPreferences("Preferencias", Context.MODE_PRIVATE);
String imageUri = preferences.getString("imageUri",null);

if (imageUri != null) {
   Uri uri = Uri.parse(imageUri);
   yourImageView.setImageURI(uri);
}

Upvotes: 0

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