Android全透明Activity示例

AndroidManifest.xml

<?xmlversion="1.0"encoding="utf-8"?>

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

package="com.example.android.xxxx">

<applicationandroid:persistent="true"

android:label="@string/home_title"

android:icon="@drawable/ic_launcher_home">

<activityandroid:name="xxxxxxxx"

android:theme="@android:style/Theme.Translucent">

<intent-filter>

<actionandroid:name="android.intent.action.LAUCHER"/>

<categoryandroid:name="android.intent.category.DEFAULT"/>

</intent-filter>

</activity>

</application>

</manifest>

xxxxxxxx.java

packagecom.example.android.xxxx;

publicclassfpToolbarextendsActivity {

@Override

publicvoidonCreate(BundlesavedInstanceState) {

super.onCreate(savedInstanceState);

requestWindowFeature(Window.FEATURE_NO_TITLE);

LinearLayoutlayout2;

layout2 =newLinearLayout(this);

Button b =newButton(this);

Button b2 =newButton(this);

layout2.addView(b);

layout2.addView(b2);

layout2.setGravity(Gravity.BOTTOM|Gravity.LEFT);

layout2.setBackgroundDrawable(null);/*设置成透明，必须在AndroidManifest.xml中设置android:theme="@android:style/Theme.Translucent"*/

b.setText("test pop.");

b2.setText("hello!");

setContentView(layout2);

}

}