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SilenceInstall

静默安装和自动安装
一,静默安装

获取root进行静默安装比较简单:
1,申请root权限Runtime.getRuntime().exec("su");
2,通过数据输出流DataOutputStream写入pm install命令;
3,最后获取Process进程的返回值int i = process.waitFor();,如果i=0,则表明已获取root权限。
二,免root自动安装

免root自动安装其实就是借助AccessibilityService无障服务
官网:https://developer.android.google.cn/reference/android/accessibilityservice/AccessibilityService.html

1,在res/xml下新建accessibility_service.xml文件:

<?xml version="1.0" encoding="utf-8"?>
<accessibility-service xmlns:android="http://schemas.android.com/apk/res/android"
    android:accessibilityEventTypes="typeWindowStateChanged|typeWindowContentChanged|typeViewScrolled"
    android:accessibilityFeedbackType="feedbackGeneric"
    android:accessibilityFlags="flagDefault"
    android:canRetrieveWindowContent="true"
    android:description="@string/accessibility_service_description"
    android:notificationTimeout="100"
    android:packageNames="com.android.packageinstaller,com.google.android.packageinstaller,com.samsung.android.packageinstaller,com.lenovo.safecenter,com.lenovo.security,com.xiaomi.gamecenter" />
    <!--
        packageNames:指定监听哪个应用程序下的窗口活动,为了兼容多数Rom,可用","分割。
        description:指定在无障碍服务当中显示给用户看的说明信息。
        accessibilityEventTypes:指定我们在监听窗口中可以接收哪些事件;如题的三个事件便可完成自动安装。
        accessibilityFlags:可以指定无障碍服务的一些附加参数,传默认值flagDefault就行。
        accessibilityFeedbackType:指定无障碍服务的反馈方式,如语音,震动等。这里使用feedbackGeneric(普通回馈)。
        canRetrieveWindowContent:指定是否允许程序读取窗口中的节点和内容,允许则必须为true。
        notificationTimeout:响应事件的时间间隔
    -->

2,新建MyAccessibilityService继承AccessibilityService
onAccessibilityEvent()是主要的操作方法,响应AccessibilityEvent的事件,在用户操作的过程中,系统不断的发送。
(1)获取活动窗口的根节点 AccessibilityNodeInfo nodeInfo = getRootInActiveWindow();
(2)检查是安装还是卸载操作,避免误操作;
(3)通过nodeInfo.findAccessibilityNodeInfosByText(clickText);获取特定事件资源节点列表;
(4)如果可点击,则进行点击事件info.performAction(AccessibilityNodeInfo.ACTION_CLICK);

3,最后在androidManifest.xml中申明服务

<service
    android:name=".MyAccessibilityService"
    android:label="SScience的自动安装服务测试"
    android:permission="android.permission.BIND_ACCESSIBILITY_SERVICE">
        <intent-filter>
            <action android:name="android.accessibilityservice.AccessibilityService" />
        </intent-filter>
        <meta-data
            android:name="android.accessibilityservice"
            android:resource="@xml/accessibility_service" />
  </service>  
  <!--
      name:创建一个Service类继承AccessibilityService来处理接收到的事件
      label:在系统设置辅助功能中显示的名称。
      resource:指向配置的xml文件。
      其它都是固定的。
   -->

三,兼容Android7.0+

实现应用安装需要构造uri = Uri.fromFile(new File(apkPath));
但是在Android7.0+以上,禁止对外暴露file://URI,解决办法是content://URI,具体见FileProvider
官网:https://developer.android.google.cn/reference/android/support/v4/content/FileProvider.html

1,在res/xml下新建file_paths.xml文件

<?xml version="1.0" encoding="utf-8"?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">
    <external-path name="apk" path="TestApk"/>
</paths>
<!--
    <files-path/> 代表的根目录: Context.getFilesDir()
    <external-path/> 代表的根目录: Environment.getExternalStorageDirectory() or
    <cache-path/> 代表的根目录: getCacheDir()
    path:app要存储的位置,即Environment.getExternalStorageDirectory()根目录下的TestApk文件夹
 -->

2,在androidManifest.xml中申provider

<provider
    android:name="android.support.v4.content.FileProvider"
    android:authorities="com.science.fileprovider"
    android:exported="false"
    android:grantUriPermissions="true">
    <meta-data
        android:name="android.support.FILE_PROVIDER_PATHS"
        android:resource="@xml/file_paths" />
</provider>  

<!--
     name:可以直接使用默认的FileProvider,也可以继承做其它操作。
     authorities:定义唯一一个authorities,和构建content://uri中的getUriForFile方法的authority参数一致
     resource:指向保存位置path配置的xml文件。
     其它都是固定的。
-->

3,java代码实现

public void installAuto(String apkPath) {
    Intent localIntent = new Intent(Intent.ACTION_VIEW);
    localIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    Uri uri;
    /**
      * Android7.0+禁止应用对外暴露file://uri,改为content://uri;具体参考FileProvider
      */
    if (Build.VERSION.SDK_INT >= 24) {
        uri = FileProvider.getUriForFile(this, "com.science.fileprovider", new File(apkPath));
        localIntent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
    } else {
        uri = Uri.fromFile(new File(apkPath));
    }
    localIntent.setDataAndType(uri, "application/vnd.android.package-archive"); //打开apk文件
    startActivity(localIntent);
}

四,已测试机型

1,坚果YQ601-Android5.1.1-Smartusan OS 2.5.3(未root)
2,OPPO R9m-Android5.1-ColorOS V3.0.0(未root)
3,MX4-Android5.1-Flyme6.6.12.2daily(有root)
4,MX6-Android6.0-Flyme5.2.4.1A(未root)
5,HM 1SLTETD-Android4.4.2开发版(有root)
6,MI2-Android5.0.2-MIUI8 6.12.8开发版(有root)
7,MI NOTE LTE-Android6.0.1-MIUI8 6.12.8开发版(有root)
8,Nexus5-Android7.1-AOSP(有root)
9,寨版Android4.4(有root)

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