Android悬浮窗floatingwindow

悬浮效果如下，本实例中悬浮的是图片、按钮、视频，其它元素同理

package dongzhong.testforfloatingwindow;

import android.content.Context;
import android.support.test.InstrumentationRegistry;
import android.support.test.runner.AndroidJUnit4;

import org.junit.Test;
import org.junit.runner.RunWith;

import static org.junit.Assert.*;

/**
 * Instrumented test which will execute on an Android device.
 *
 * @see Testing documentation
 */
@RunWith（AndroidJUnit4.class）
public class ExampleInstrumentedTest {
    @Test
    public void useAppContext（） throws Exception {
        // Context of the app under test.
        Context appContext = InstrumentationRegistry.getTargetContext（）;

        assertEquals（“dongzhong.testforfloatingwindow“ appContext.getPackageName（））;
    }
}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2018-05-31 01:43  TestForFloatingWindow-master\
     文件         124  2018-05-31 01:43  TestForFloatingWindow-master\.gitignore
     目录           0  2018-05-31 01:43  TestForFloatingWindow-master\app\
     文件           7  2018-05-31 01:43  TestForFloatingWindow-master\app\.gitignore
     文件         936  2018-05-31 01:43  TestForFloatingWindow-master\app\build.gradle
     文件         751  2018-05-31 01:43  TestForFloatingWindow-master\app\proguard-rules.pro
     目录           0  2018-05-31 01:43  TestForFloatingWindow-master\app\src\
     目录           0  2018-05-31 01:43  TestForFloatingWindow-master\app\src\androidTest\
     目录           0  2018-05-31 01:43  TestForFloatingWindow-master\app\src\androidTest\java\
     目录           0  2018-05-31 01:43  TestForFloatingWindow-master\app\src\androidTest\java\dongzhong\
     目录           0  2018-05-31 01:43  TestForFloatingWindow-master\app\src\androidTest\java\dongzhong\testforfloatingwindow\
     文件         763  2018-05-31 01:43  TestForFloatingWindow-master\app\src\androidTest\java\dongzhong\testforfloatingwindow\ExampleInstrumentedTest.java
     目录           0  2018-05-31 01:43  TestForFloatingWindow-master\app\src\main\
     文件        1074  2018-05-31 01:43  TestForFloatingWindow-master\app\src\main\AndroidManifest.xml
     目录           0  2018-05-31 01:43  TestForFloatingWindow-master\app\src\main\java\
     目录           0  2018-05-31 01:43  TestForFloatingWindow-master\app\src\main\java\dongzhong\
     目录           0  2018-05-31 01:43  TestForFloatingWindow-master\app\src\main\java\dongzhong\testforfloatingwindow\
     文件        3281  2018-05-31 01:43  TestForFloatingWindow-master\app\src\main\java\dongzhong\testforfloatingwindow\FloatingButtonService.java
     文件        4602  2018-05-31 01:43  TestForFloatingWindow-master\app\src\main\java\dongzhong\testforfloatingwindow\FloatingImageDisplayService.java
     文件        4936  2018-05-31 01:43  TestForFloatingWindow-master\app\src\main\java\dongzhong\testforfloatingwindow\FloatingVideoService.java
     文件        3310  2018-05-31 01:43  TestForFloatingWindow-master\app\src\main\java\dongzhong\testforfloatingwindow\MainActivity.java
     目录           0  2018-05-31 01:43  TestForFloatingWindow-master\app\src\main\res\
     目录           0  2018-05-31 01:43  TestForFloatingWindow-master\app\src\main\res\drawable-v24\
     文件        1880  2018-05-31 01:43  TestForFloatingWindow-master\app\src\main\res\drawable-v24\ic_launcher_foreground.xml
     目录           0  2018-05-31 01:43  TestForFloatingWindow-master\app\src\main\res\drawable\
     文件        5606  2018-05-31 01:43  TestForFloatingWindow-master\app\src\main\res\drawable\ic_launcher_background.xml
     文件       69160  2018-05-31 01:43  TestForFloatingWindow-master\app\src\main\res\drawable\image_01.jpg
     文件      219542  2018-05-31 01:43  TestForFloatingWindow-master\app\src\main\res\drawable\image_02.jpg
     文件      142166  2018-05-31 01:43  TestForFloatingWindow-master\app\src\main\res\drawable\image_03.jpg
     文件      299478  2018-05-31 01:43  TestForFloatingWindow-master\app\src\main\res\drawable\image_04.jpg
     文件      102561  2018-05-31 01:43  TestForFloatingWindow-master\app\src\main\res\drawable\image_05.jpg
............此处省略40个文件信息