Android開發程序代碼獲取root權限

把apk放到/system/app文件夾下，作為系統項目，就可以保證項目有root的權http://限。

root權限的app可以申請很多一般用戶無法申請的權限。

參考：點擊打開鏈接

可以查看哪些權限是需要root才能申請的。

import java.io.DataOutputStream;  
import java.io.IOException;  

import android.app.Activity;  
import android.os.Bundle;  
import android.view.View;  
import android.widget.Button;  

public class MainActivity extends Activity {  


    @Override  
    public void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
        setContentView(R.layout.activity_main);  
        Button open = (Button) findViewById(R.id.open);  
        Button close = (Button) findViewById(R.id.close);  
        open.setOnClickListener(new View.OnClickListener() {  
            @Override  
            public void onClick(View v) {  
                try {  
                    CopyAppToSystem();  
                } catch (IOException e) {  
                    // TODO Auto-generated catch block  
                    e.printStackTrace();  
                }  
            }  
        });  
        close.setOnClickListener(new View.OnClickListener() {  
            @Override  
            public void onClick(View v) {  
                RunAsRooter();  
            }  
        });  
    }  

    private void RunAsRooter()  
    {  
        try {  
              Process process = Runtime.getRuntime().exec("su");  
              process.waitFor();  
            } catch (IOException e) {  
              e.printStackTrace();  
            } catch (InterruptedException e) {  
              e.printStackTrace();  
            }  
    }  

    private void CopyAppToSystem() throws IOException  
    {  
        Process process = Runtime.getRuntime().exec("su");  
        DataOutputStream out = new DataOutputStream(process.getOutputStream());  
        out.writeBytes("mount -o remount,rw -t yaffs2 /dev/block/mtdblock3 /system\n");  
        out.writeBytes("cat /sdcard/myApp.adk > /system/app/myApp.adk\n");  
        out.writeBytes("mount -o remount,ro -t yaffs2 /dev/block/mtdblock3 /system\n");  
        out.writeBytes("exit\n");    
        out.flush();  
        try {  
            process.waitFor();  
        } catch (InterruptedException e) {  
            e.printStackTrace();  
        }  
    }  
}