Using popup

We can use Dialog to get data from user, and also with popup.

In folder drawable, create file name popup_background.xml

<?xml version="1.0" encoding="utf-8"?>

<selector xmlns:android="http://schemas.android.com/apk/res/android" >

    <item android:state_above_anchor="true" android:drawable="@drawable/speech_background_top" />

    <item android:drawable="@drawable/speech_background_bottom" />

</selector>

Copy in to drawable 2 icon, name them speech_background_top, speech_background_bottom.

In folder layout, create file popup.xml.

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="wrap_content"

    android:layout_height="wrap_content"

    android:orientation="vertical" >

    <TextView

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_gravity="center_horizontal"

        android:text="This is a PopupWindow" />

    <EditText

        android:id="@+id/e"

        android:layout_width="230dp"

        android:layout_height="wrap_content"

        android:layout_gravity="center_horizontal"

        android:singleLine="true" >

        <requestFocus />

    </EditText>

    <Button

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_gravity="center_horizontal"

        android:onClick="close"

        android:text="Close" />

</LinearLayout>

File activity_main.xml sẽ như sau.

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent">

    <Button

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:text="Show PopupWindow"

        android:onClick="onShowWindowClick" />

    <Button

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:layout_gravity="bottom"

        android:text="Show PopupWindow"

        android:onClick="onShowWindowClick" />

</FrameLayout>

Class main like this.

public class MainActivity extends Activity implements View.OnTouchListener {

     PopupWindow mOverlay;

     EditText e;

     @SuppressWarnings("deprecation")

     @Override

     protected void onCreate(Bundle savedInstanceState) {

          super.onCreate(savedInstanceState);

          setContentView(R.layout.activity_main);

          View popupContent = getLayoutInflater().inflate(R.layout.popup, null);

          mOverlay = new PopupWindow();

mOverlay.setWindowLayoutMode(WindowManager.LayoutParams.WRAP_CONTENT,WindowManager.LayoutParams.WRAP_CONTENT);

mOverlay.setWidth(getResources().getDimensionPixelSize(

                     R.dimen.popupWidth));

mOverlay.setHeight(getResources().getDimensionPixelSize(

                     R.dimen.popupHeight));

mOverlay.setContentView(popupContent);

mOverlay.setBackgroundDrawable(getResources().getDrawable(

                     R.drawable.popup_background));

     mOverlay.setAnimationStyle(R.style.PopupAnimation);

     mOverlay.setTouchInterceptor(this);

     mOverlay.setFocusable(true);

     e = (EditText) popupContent.findViewById((R.id.e));

     }

public void close(View v) {

String nhap = e.getText().toString();

if (nhap == null || nhap.trim().equals("")) {

Toast.makeText(this, "You enter nothing", Toast.LENGTH_SHORT).show();

}

else {

Toast.makeText(this, "Enter " + nhap, Toast.LENGTH_SHORT).show();

e.setText("");

mOverlay.dismiss();

}

}

@Override

protected void onPause() {

     super.onPause();

// PopupWindow is like Dialog, it will leak if left visible while the Activity finishes

mOverlay.dismiss();

}

@Override

public boolean onTouch(View v, MotionEvent event) {

     // Handle any direct touch events passed to the PopupWindow

return false;

}

public void onShowWindowClick(View v) {

          if (mOverlay.isShowing()) {

               mOverlay.dismiss();

          } else {

          mOverlay.showAsDropDown(v);

          }

     }

}

Popup now look like this, enter some text to see toast.