Kiosk App Snippets : Android : 4.4.4 API 19

gistfile1.txt

** Custom ViewGroup class which will be used to EAT all the touch events. nom nom nom. **

public class customViewGroup extends ViewGroup {

    public customViewGroup(Context context) {
        super(context);
    }

    @Override
    protected void onLayout(boolean changed, int l, int t, int r, int b) {
    }

    @Override
    public boolean onInterceptTouchEvent(MotionEvent ev) {
        Log.v("customViewGroup", "**********Intercepted");
        return false;
    }
}

** REQUIRES THIS PERMISSION **
<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW"/>

** USING IT **

// get a window manager
WindowManager manager = ((WindowManager) getApplicationContext()
        .getSystemService(Context.WINDOW_SERVICE));

// create some layout parameters
WindowManager.LayoutParams localLayoutParams = new WindowManager.LayoutParams();
localLayoutParams.type = WindowManager.LayoutParams.TYPE_SYSTEM_ERROR;
localLayoutParams.gravity = Gravity.TOP;
localLayoutParams.flags = WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE|
    // this is to enable the notification to receive touch events
    WindowManager.LayoutParams.FLAG_NOT_TOUCH_MODAL |
    // Draws over status bar
    WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN;

localLayoutParams.width = WindowManager.LayoutParams.MATCH_PARENT;
localLayoutParams.height = (int) (25 * getResources().getDisplayMetrics().scaledDensity); // 25 seems to be the safest minimum
localLayoutParams.format = PixelFormat.TRANSPARENT;

customViewGroup view = new customViewGroup(this);

manager.addView(view, localLayoutParams);