使用root权限静默安装APP的方法

/** 
 * 静默安装的实现类，调用install()方法执行具体的静默安装逻辑。 
 * 原文地址：http://blog.csdn.net/guolin_blog/article/details/47803149 
 * @author guolin 
 * @since 2015/12/7 
 */  
public class SilentInstall {  
  
    /** 
     * 执行具体的静默安装逻辑，需要手机ROOT。 
     * @param apkPath 
     *          要安装的apk文件的路径 
     * @return 安装成功返回true，安装失败返回false。 
     */  
    public boolean install(String apkPath) {  
        boolean result = false;  
        DataOutputStream dataOutputStream = null;  
        BufferedReader errorStream = null;  
        try {  
            // 申请su权限  
            Process process = Runtime.getRuntime().exec("su");  
            dataOutputStream = new DataOutputStream(process.getOutputStream());  
            // 执行pm install命令  
            String command = "pm install -r " + apkPath + "\n";  
            dataOutputStream.write(command.getBytes(Charset.forName("utf-8")));  
            dataOutputStream.flush();  
            dataOutputStream.writeBytes("exit\n");  
            dataOutputStream.flush();  
            process.waitFor();  
            errorStream = new BufferedReader(new InputStreamReader(process.getErrorStream()));