检测Android手机是否具有root权限和静默安装
jopen
10年前
执行静默安装时，需要向手机申请获取root权限，如果手机具有root权限，则可以完成安装。代码如下：
MainActivity：
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import java.io.DataOutputStream; import java.io.File; import java.io.OutputStream; import android.os.Bundle; import android.os.Environment; import android.app.Activity; import android.util.Log; public class MainActivity extends Activity { private static final String TAG = "MainActivity"; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); // 笔者手机上的apk路径 String apkName = Environment.getExternalStorageDirectory().toString() + File.separator + "police.apk"; Log.e(TAG, "root = " + haveRoot("pm install -r " + apkName)); } /** * 检测是否具体root权限 * * @param cmd * @return */ private boolean haveRoot(String cmd) { int i = execRootCmdSilent(cmd); if (i != -1) { return true; } return false; } /** * 执行静默安装 * * @param paramString * @return */ private int execRootCmdSilent(String paramString) { int result = -1; try { Process localProcess = Runtime.getRuntime().exec("su"); OutputStream os = localProcess.getOutputStream(); DataOutputStream dos = new DataOutputStream(os); dos.writeBytes(paramString + "\n"); dos.flush(); dos.writeBytes("exit\n"); dos.flush(); localProcess.waitFor(); result = localProcess.exitValue(); } catch (Exception e) { e.printStackTrace(); } return result; } } </div> 权限：
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<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" /> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /></div>