اضافة خيار شاشة كاملة والعودة للوضع العادي ل videoview

 
button1.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
DisplayMetrics metrics = new DisplayMetrics(); getWindowManager().getDefaultDisplay().getMetrics(metrics);           android.widget.LinearLayout.LayoutParams params =(android.widget.LinearLayout.LayoutParams) vd.getLayoutParams();
params.width =  metrics.widthPixels;
params.height = metrics.heightPixels;
params.leftMargin = 0;             vd.setLayoutParams(params);
}
});

button2.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
DisplayMetrics metrics = new DisplayMetrics(); getWindowManager().getDefaultDisplay().getMetrics(metrics);             android.widget.LinearLayout.LayoutParams params = (android.widget.LinearLayout.LayoutParams) vd.getLayoutParams();
params.width =(int)(300*metrics.density);
params.height =(int)(250*metrics.density);
params.leftMargin =30;             vd.setLayoutParams(params);
}
});