The Android app obtains the highest permissions of users.

To grant the root permission to the Android app, the Android device must have the root permission.

How an application obtains root permissions: grant the highest permissions to the Code Execution directory of the application. In Linux, use chmod 777 [Code Execution Directory]

The Code is as follows:

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/** * If the application runs the command to obtain the root permission, the device must be cracked (obtain the root permission) * * @ Return application Yes/No get root permission */ Public static Boolean upgraderootpermission (string pkgcodepath ){ Process = NULL; Dataoutputstream OS = NULL; Try { String cmd = "chmod 777" + pkgcodepath; Process = runtime.getruntime(cmd.exe C ("Su"); // switch to the root account OS = new dataoutputstream (process. getoutputstream ()); OS. writebytes (CMD + "\ n "); OS. writebytes ("Exit \ n "); OS. Flush (); Process. waitfor (); } Catch (exception e ){ Return false; } Finally { Try { If (OS! = NULL ){ OS. Close (); } Process. Destroy (); } Catch (exception e ){ } } Return true; }

Call code:

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@ Override Public void oncreate (bundle savedinstancestate ){ Super. oncreate (savedinstancestate ); Setcontentview (R. layout. Main ); // Code execution directory of the current application Upgraderootpermission (getpackagecodepath ()); }

After executing the above Code, the system will pop up the dialog box "whether to allow the root permission to be obtained". Then, select allow.