android不断开关蓝牙

来源：互联网发布：淘宝无法开店编辑：程序博客网时间：2024/05/22 05:57

文章的思路就是在主线程中设置一个按钮，启动一个线程，在子线程中进行线程的耗时操作，最后需要记住添加蓝牙权限

AndroidManifest.xml中加入
<uses-permission android:name="android.permission.BLUETOOTH" />
<uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />

package com.example.testcamera;import java.io.IOException;import android.R.anim;import android.support.v7.app.ActionBarActivity;import android.app.Activity;import android.bluetooth.BluetoothAdapter;import android.content.Intent;import android.content.res.Configuration;import android.hardware.Camera;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.util.Log;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.TextView;import android.widget.Toast;public class MainActivity extends Activity {Button startButton;TextView textView;Handler handle = new Handler() {     @Override    public void handleMessage(Message msg) {        super.handleMessage(msg);        textView.setText(" "+msg.arg1);    }    };    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        startButton=(Button) findViewById(R.id.startButton);        textView=(TextView) findViewById(R.id.tv);             startButton.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View arg0) {MyThread myThread=new MyThread();myThread.start();}});    }    class MyThread extends Thread {            @Override        public void run() {             // 耗时操作                   int num=0;        while(true){         BluetoothAdapter mBluetoothAdapter = BluetoothAdapter                          .getDefaultAdapter();                    mBluetoothAdapter.disable();//关闭蓝牙                    String string1=mBluetoothAdapter.getAddress();                                    Log.e("test", "关闭"+mBluetoothAdapter.getState());            try {Thread.sleep(15000);} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}            mBluetoothAdapter.enable();                       String string=mBluetoothAdapter.getAddress();            Message msg = new Message();                       num++;            msg.arg1=num;            Log.e("bluetest", "开启"+mBluetoothAdapter.getState());            Log.e("bluetest", string);            Log.e("bluetest","总的次数"+num);            handle.sendMessage(msg);            try {Thread.sleep(15000);} catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();}            super.run();        }        }                    }}

这里我在主界面更新开关的次数，也将开关的状态的返回值，打开的返回值，蓝牙的mac地址，和开关的次数输出到了log之中。

这里，谢谢我同事b.z对我的提醒

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