Android全透明Activity示例

 

AndroidManifest.xml

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

 

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

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

 

    <application android:persistent="true"

          android:label="@string/home_title"

          android:icon="@drawable/ic_launcher_home">

        <activity android:name="xxxxxxxx"

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

            <intent-filter>

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

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

            </intent-filter>

        </activity>

    </application>

</manifest>

 

 

xxxxxxxx.java

package com.example.android.xxxx;

 

public class fpToolbar extends Activity {

 

    @Override

    public void onCreate(Bundle savedInstanceState) {

       super.onCreate(savedInstanceState);

       requestWindowFeature(Window.FEATURE_NO_TITLE);

    LinearLayout layout2;

    layout2 = new LinearLayout(this);

        Button b = new Button(this);

    Button b2 = new Button(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); 

    }

}