申请su权限报错

Jack---Jiao 2016-01-15 05:17:34

用的台电的X98 AIR Ⅲ进行测试。
// 申请su权限
Process process = Runtime.getRuntime().exec("su");

报错

01-15 15:24:27.689: E/TAG(21406): Error running exec(). Command: [su] Working Directory: null Environment: null

01-15 15:24:27.689: E/TAG(21406): java.io.IOException: Error running exec(). Command: [su] Working Directory: null Environment: null

01-15 15:24:27.689: E/TAG(21406): 	at java.lang.ProcessManager.exec(ProcessManager.java:211)

01-15 15:24:27.689: E/TAG(21406): 	at java.lang.Runtime.exec(Runtime.java:173)

01-15 15:24:27.689: E/TAG(21406): 	at java.lang.Runtime.exec(Runtime.java:246)

01-15 15:24:27.689: E/TAG(21406): 	at java.lang.Runtime.exec(Runtime.java:189)

01-15 15:24:27.689: E/TAG(21406): 	at com.szy.update.UpdateManager.install(UpdateManager.java:327)

01-15 15:24:27.689: E/TAG(21406): 	at com.szy.update.UpdateManager.installApk(UpdateManager.java:312)

01-15 15:24:27.689: E/TAG(21406): 	at com.szy.update.UpdateManager.access$2(UpdateManager.java:301)

01-15 15:24:27.689: E/TAG(21406): 	at com.szy.update.UpdateManager$1.handleMessage(UpdateManager.java:73)

01-15 15:24:27.689: E/TAG(21406): 	at android.os.Handler.dispatchMessage(Handler.java:102)

01-15 15:24:27.689: E/TAG(21406): 	at android.os.Looper.loop(Looper.java:135)

01-15 15:24:27.689: E/TAG(21406): 	at android.app.ActivityThread.main(ActivityThread.java:5221)

01-15 15:24:27.689: E/TAG(21406): 	at java.lang.reflect.Method.invoke(Native Method)

01-15 15:24:27.689: E/TAG(21406): 	at java.lang.reflect.Method.invoke(Method.java:372)

01-15 15:24:27.689: E/TAG(21406): 	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)

01-15 15:24:27.689: E/TAG(21406): 	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)

01-15 15:24:27.689: E/TAG(21406): Caused by: java.io.IOException: Permission denied

01-15 15:24:27.689: E/TAG(21406): 	at java.lang.ProcessManager.exec(Native Method)

01-15 15:24:27.689: E/TAG(21406): 	at java.lang.ProcessManager.exec(ProcessManager.java:209)

01-15 15:24:27.689: E/TAG(21406): 	... 14 more