Is it possible to get a different main view of the app like watching lollipops on lollipops

You can get the launcher Intent

for the app using PackageManager.getLaunchIntentForPackage

and PackageManager.getActivityInfo

will return ActivityInfo

for it.

Once you have this information, you can create a new one Theme

, then use the resources from PackageManager.getResourcesForApplication

to get the attrs needed to find the value colorPrimary

.

    try {
        final PackageManager pm = getPackageManager();

        // The package name of the app you want to receive resources from
        final String appPackageName = ...;
        // Retrieve the Resources from the app
        final Resources res = pm.getResourcesForApplication(appPackageName);
        // Create the attribute set used to get the colorPrimary color
        final int[] attrs = new int[] {
                /** AppCompat attr */
                res.getIdentifier("colorPrimary", "attr", appPackageName),
                /** Framework attr */
                android.R.attr.colorPrimary
        };

        // Create a new Theme and apply the style from the launcher Activity
        final Theme theme = res.newTheme();
        final ComponentName cn = pm.getLaunchIntentForPackage(appPackageName).getComponent();
        theme.applyStyle(pm.getActivityInfo(cn, 0).theme, false);

        // Obtain the colorPrimary color from the attrs
        TypedArray a = theme.obtainStyledAttributes(attrs);
        // Do something with the color
        final int colorPrimary = a.getColor(0, a.getColor(1, Color.WHITE));
        // Make sure you recycle the TypedArray
        a.recycle();
        a = null;
    } catch (final NameNotFoundException e) {
        e.printStackTrace();
    }

      

        
        
        
      

    

One caveat is that the launcher Activity

cannot contain the attribute Theme

, in which case you can use PackageManager.getApplicationInfo

, but there is no guarantee that the tag Application

contains the attribute Theme

.

Here are some examples:

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