I'm creating a reusable Loading screen to use between Activities, on the LoadingActivity I added a semi transparent background resource, but I'm unable to see the old Activity.
public class LoadingActivity extends Activity {
public static int REQUEST_LOADING_SCREEN = 40;
@Override
protected void onCreate(Bundle savedInstance) {
super.onCreate(savedInstance);
FrameLayout mainLayout = new FrameLayout(this);
mainLayout.setBackgroundResource(R.drawable.background_translucent);
LinearLayout layout = new LinearLayout(this);
layout.setGravity(Gravity.CENTER);
LayoutParams params = LayoutParamsFactory.newMatchFrameLP();
params.gravity = Gravity.CENTER;
mainLayout.addView(layout, params);
ProgressBar bar = new ProgressBar(this);
bar.setIndeterminate(true);
layout.addView(bar, LayoutParamsFactory.newWrapLinearLP());
TextView text = new TextView(this);
text.setText("Loading...");
layout.addView(text, LayoutParamsFactory.newWrapLinearLP());
setContentView(mainLayout);
}
public static void openFor(Activity activity) {
Intent intent = new Intent(activity, LoadingActivity.class);
activity.startActivityForResult(intent, REQUEST_LOADING_SCREEN);
}
public static void closeFrom(Activity activity) {
activity.finishActivity(REQUEST_LOADING_SCREEN);
}
}
EDIT:
Even with:
mainLayout.setBackgroundColor(Color.TRANSPARENT);
layout.setBackgroundColor(Color.TRANSPARENT);
The background is still black
In Android, we can create a transparent activity that will not be visible but your application will be running. The best part of this transparent activity is that you can create a transparent activity by just changing the resource file and we need not write the java or kotlin code for the same.
Just copy the string. replace transparent. toString() with "transparent" .
Have you tried setting the theme on the activity via the manifest file?
<activity android:name=".LoadingActivity" android:theme="@android:style/Theme.Translucent.NoTitleBar.Fullscreen" />
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