android蓝牙开发入门到精通1---蓝牙基础

1，要使用蓝牙，首先要增加权限

 <uses-permission android:name="android.permission.BLUETOOTH" />
    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />

2，创建蓝牙控制类

package com.win16.bluetoothclass2;

import android.app.Activity;
import android.bluetooth.BluetoothAdapter;
import android.content.Intent;

/**
 *蓝牙控制
 * Created by huwenbao on 2015/5/26.
 */
public class BlueToothController {

    private BluetoothAdapter mAdapter;

    public BlueToothController() {
        mAdapter = BluetoothAdapter.getDefaultAdapter();
    }

    /**
     * 是否支持蓝牙
     * @return true 支持， false 不支持
     */
    public boolean isSupportBlueTooth() {
       if( mAdapter != null ){
           return true;
       }
        else {
           return false;
       }
    }

    /**
     *获取当前蓝牙是否可用
     * @return true 可用,false 不可用
     */
    public boolean getBlueToothStatus() {
        assert (mAdapter != null);
        return mAdapter.isEnabled();
    }


    /**
     *打开蓝牙
     * @param activity
     * @param requestCode
     */
    public void turnOnBlueTooth(Activity activity, int requestCode) {
        Intent intent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
        activity.startActivityForResult(intent, requestCode);
//        mAdapter.enable();
    }

    /**
     * 关闭蓝牙
     */
    public void turnOffBlueTooth() {
        mAdapter.disable();
    }
}

3，界面展示

package com.win16.bluetoothclass2;

import android.bluetooth.BluetoothAdapter;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Toast;


public class MainActivity extends ActionBarActivity {

    public static final int REQUEST_CODE = 0;
    private BlueToothController mController = new BlueToothController();
    private Toast mToast;

    /**
     * 监听蓝牙开关的广播
     */
    private BroadcastReceiver receiver = new BroadcastReceiver() {
        @Override
        public void onReceive(Context context, Intent intent) {
            int state = intent.getIntExtra(BluetoothAdapter.EXTRA_STATE,-1);
            switch (state) {
                case BluetoothAdapter.STATE_OFF:
                    showToast("STATE_OFF");
                    break;
                case BluetoothAdapter.STATE_ON:
                    showToast("STATE_ON");
                    break;
                case BluetoothAdapter.STATE_TURNING_ON:
                    showToast("STATE_TURNING_ON");
                    break;
                case BluetoothAdapter.STATE_TURNING_OFF:
                    showToast("STATE_TURNING_OFF");
                    break;
                default:
                    showToast("Unkown STATE");
                    break;
            }
        }
    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        IntentFilter filter = new IntentFilter(BluetoothAdapter.ACTION_STATE_CHANGED);
        registerReceiver(receiver, filter);
    }

    @Override
    protected void onDestroy() {
        unregisterReceiver(receiver);
        super.onDestroy();
    }

    public void isSupportBlueTooth(View view) {
        boolean ret = mController.isSupportBlueTooth();
        showToast("support Bluetooth? " + ret);
    }

    public void isBlueToothEnable(View view) {
        boolean ret = mController.getBlueToothStatus();
        showToast("Bluetooth enable？" + ret);
    }

    public void requestTurnOnBlueTooth(View view) {
        mController.turnOnBlueTooth(this, REQUEST_CODE);
    }

    public void turnOffBlueTooth(View view) {
        mController.turnOffBlueTooth();
    }

    private void showToast(String text) {
        if( mToast == null) {
            mToast = Toast.makeText(this, text, Toast.LENGTH_SHORT);
        }
        else {
            mToast.setText(text);
        }
        mToast.show();
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        //当发起请求蓝牙打开事件时，会告诉你用户选择的结果
        if( resultCode == RESULT_OK) {
            showToast("打开成功");
        }
        else {
            showToast("打开失败");
        }
    }
}

4，界面布局

<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:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:orientation="vertical"
    android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">


    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/support_bluetooth"
        android:id="@+id/is_support_blue_tooth"
        android:onClick="isSupportBlueTooth" />

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/is_turn_on"
        android:id="@+id/is_blue_tooth_enable"
        android:onClick="isBlueToothEnable" />

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/turn_on"
        android:id="@+id/turn_on_blue_tooth"
        android:onClick="requestTurnOnBlueTooth" />

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/turn_off"
        android:id="@+id/turn_off_blue_tooth"
        android:onClick="turnOffBlueTooth" />
</LinearLayout>

下载地址

http://download.youkuaiyun.com/detail/eandroidhu/9433844