Android 代码中执行adb shell命令

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xml代码：

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical"    android:paddingVertical="25dp"    android:paddingHorizontal="25dp"    tools:context=".AdbRunActivity">    <EditText        android:id="@+id/activity_adb_run_cmd_et"        android:gravity="center"        android:layout_width="match_parent"        android:layout_height="40dp"        android:hint="@string/activity_adb_run_cmd"/>    <Button        android:id="@+id/activity_adb_run_cmd_bt"        android:layout_marginTop="40dp"        android:gravity="center"        android:layout_width="match_parent"        android:layout_height="40dp"        android:text="@string/activity_adb_run_cmd_run"        android:textAllCaps="false"        android:background="@color/purple_200"/></LinearLayout>

主代码：

需要输入正确的adb shell 命令，实际运行只需要adb shell 后面的命令

package com.fzw.csdnapplication;import android.app.Activity;import android.os.Bundle;import android.text.TextUtils;import android.util.Log;import android.widget.Button;import android.widget.EditText;import android.widget.Toast;import java.io.IOException;public class AdbRunActivity extends Activity     private static final String TAG = "CsdnApplication AdbRunActivity";    private EditText cmdEt;    private Button runCmdBt;    private String result;    @Override    protected void onCreate(Bundle savedInstanceState)         super.onCreate(savedInstanceState);        Log.i(TAG,"onCreate");        setContentView(R.layout.activity_adb_run_acivity);        initView();        clickEvent();        private void initView()         Log.i(TAG,"initView");        cmdEt = findViewById(R.id.activity_adb_run_cmd_et);        runCmdBt = findViewById(R.id.activity_adb_run_cmd_bt);        private void clickEvent()         runCmdBt.setOnClickListener(view ->             result = runCmd(cmdEt.getText().toString());            showToast();            Log.d(TAG, "run result: " + result);        );        private void showToast()         Log.i(TAG, "show Toast");        String toastText = "执行失败，请检查shell命令!";        if (!TextUtils.isEmpty(result))             toastText = "执行成功!";                Toast.makeText(this,toastText, Toast.LENGTH_SHORT).show();        private String runCmd(String cmd)         Log.d(TAG, "runCmd: " + cmd);        if (TextUtils.isEmpty(cmd) || cmd.length() < 11)             return "";                String cmdHead = cmd.substring(0, 9);        if (!"adb shell".equals(cmdHead))             return "";                return execRootCmd(cmd);        /**     * 执行命令并且输出结果     */    public static String execRootCmd(String cmd)         String content = "";        try             cmd = cmd.replace("adb shell","");            Process process = Runtime.getRuntime().exec(cmd);            Log.d(TAG,"process " + process.toString());            content = process.toString();         catch (IOException e)             Log.d(TAG,"exception " + e.toString());            e.printStackTrace();                return content;    

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