How to display different contents in Android dual screens POS terminal

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<uses-permission android:name=”android.permission.SYSTEM_ALERT_WINDOW”/>

<!– Display at the top of the screen addview–>

<uses-permission android:name=”android.permission.SYSTEM_OVERLAY_WINDOW” />

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public DifferentDislay(Context outerContext, Display display) {

super(outerContext,display);

}

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.test);

}

}

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mDisplayManager = (DisplayManager) this

.getSystemService(Context.DISPLAY_SERVICE);

Display[] displays = mDisplayManager.getDisplays();

if (mPresentation == null) {

mPresentation = new DifferentDislay(this, displays[displays.length – 1]);// displays[1]

mPresentation.getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_ALERT);

mPresentation.show();

}