[Visibility.java]
public class Visibility1 extends Activity {
private View mVictim;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.visibility_1);
// Find the view whose visibility will change
mVictim = findViewById(R.id.victim);
// Find our buttons
Button visibleButton = (Button) findViewById(R.id.vis);
Button invisibleButton = (Button) findViewById(R.id.invis);
Button goneButton = (Button) findViewById(R.id.gone);
// Wire each button to a click listener
visibleButton.setOnClickListener(mVisibleListener);
invisibleButton.setOnClickListener(mInvisibleListener);
goneButton.setOnClickListener(mGoneListener);
}
OnClickListener mVisibleListener = new OnClickListener() {
public void onClick(View v) {
mVictim.setVisibility(View.VISIBLE);
}
};
OnClickListener mInvisibleListener = new OnClickListener() {
public void onClick(View v) {
mVictim.setVisibility(View.INVISIBLE);
}
};
OnClickListener mGoneListener = new OnClickListener() {
public void onClick(View v) {
mVictim.setVisibility(View.GONE);
}
};
}
[visibility1.java]
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<LinearLayout
android:orientation="vertical"
android:background="@drawable/box"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<TextView
android:background="@drawable/red"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/visibility_1_view_1"/>
<TextView android:id="@+id/victim"
android:background="@drawable/green"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/visibility_1_view_2"/>
<TextView
android:background="@drawable/blue"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/visibility_1_view_3"/>
</LinearLayout>
<LinearLayout
android:orientation="horizontal"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<Button android:id="@+id/vis"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/visibility_1_vis"/>
<Button android:id="@+id/invis"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/visibility_1_invis"/>
<Button android:id="@+id/gone"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/visibility_1_gone"/>
</LinearLayout>
</LinearLayout>
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