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PackageManager pm = getPackageManager();

  for (ApplicationInfo app : pm.getInstalledApplications(0)) {
	     Log.d("PackageList", "package: " + app.packageName + ", sourceDir: " + app.sourceDir);
	}
输出如下：

  package: com.tmobile.thememanager, sourceDir: /system/app/ThemeManager.apk
	package: com.touchtype.swiftkey, sourceDir: /data/app/com.touchtype.swiftkey-1.apk

背景色根据状态更改颜色 android:backgroup
<selector xmlns:android="http://schemas.android.com/apk/res/android">

    <item android:state_selected="true"><shape>            <gradient android:angle="0" android:centerColor="#00a59f" android:endColor="#00a59f" android:startColor="#00a59f" />
        </shape></item>
    <item android:state_focused="true"><shape>
            <gradient android:angle="0" android:centerColor="#00a59f" android:endColor="#00a59f" android:startColor="#00a59f" />
        </shape></item>
    <item android:state_pressed="true"><shape>
            <gradient android:angle="0" android:centerColor="#00a59f" android:endColor="#00a59f" android:startColor="#00a59f" />
        </shape></item>
    <item><shape>
            <gradient android:angle="0" android:centerColor="#00ff00" android:endColor="00ff00" android:startColor="00ff00" />
        </shape></item>

</selector>

<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:color="#53c1bd" android:state_selected="true"/>
    <item android:color="#53c1bd" android:state_focused="true"/>
    <item android:color="#53c1bd" android:state_pressed="true"/>
    <item android:color="#777777"/>
</selector>
/**
文字根据状态更改颜色 放在res/color/目录下  android：textColor*/