Android之来电秀实现(一)

简单的说下实现来电秀的大概原理流程:首先通过监听来电状态,通过拦截来电然后在窗口弹出一层系统级别的弹窗,这层弹窗即是来电秀。

先来两张效果图:

来电

去电

下面来说下实现,因为商用的原因,不能直接贴代码,所以在这里,会贴一些比较核心的代码,大概分为五个步骤:

第一:监听来电状态

/**
 * 电话状态监听(来电或去电)
 * 
 * @author Jenly
 * 
 */
public class PhoneStateReceiver extends BroadcastReceiver {

	public static final String PHONE_STATE = "android.intent.action.PHONE_STATE";

	@Override
	public void onReceive(Context context, Intent intent) {
		
		LogUtils.d(intent.getAction());
		context.startService(new Intent(context,CallShowService.class));

	}

}
这是一个广播接收器,用来接收手机来电状态的,把接收到的状态发送给CallShowService服务来做相应的处理

第二:通过手机状态来做不同的处理

CallShowService.class是一个来电秀服务(CallShowService extends Service),里面的主要核心代码是通过监听来电状态来做出相应的处理,如:弹屏

下面是CallShowService几个比较核心的代码:


	@Override
	public void onCreate() {
		super.onCreate();
		isRunning = true;
		initPhoneStateListener();
		callShowView = CallShowView.getInstance();
	} 

	/**
	 * 初始化电话状态监听
	 */
	private void initPhoneStateListener(){
		phoneStateListener = new PhoneStateListener(){
			@Override
			public void onCallStateChanged(int state, String incomingNumber) {
				
				super.onCallStateChanged(state, incomingNumber);
				phoneState = state;
				
				if(isEnable){//启用
					switch (state) {
					case TelephonyManager.CALL_STATE_IDLE://待机时(即无电话时,挂断时会调用)
						LogUtils.d("CALL_STATE_IDLE");
						dismiss();//关闭来电秀
						break;
					case TelephonyManager.CALL_STATE_OFFHOOK://摘机(接听)
						LogUtils.d("CALL_STATE_OFFHOOK");
						callShow();//显示来电秀
						
						break;
					case TelephonyManager.CALL_STATE_RINGING://响铃(来电)
						LogUtils.d("CALL_STATE_RINGING");
						isCalling = false;
						phoneNumber = incomingNumber;
						LogUtils.d("incomingNumber:"+ incomingNumber);//来电号码
						callShow();//显示来电秀
						
						break;
						
					default:
						break;
					}
				}
				
			}
		};
		
		//--------------------------
		
		telephonyManager = (TelephonyManager)getSystemService(TELEPHONY_SERVICE);
		//设置监听器
		telephonyManager.listen(phoneStateListener, PhoneStateListener.LISTEN_CALL_STATE);
	}

	@Override
	public int onStartCommand(Intent intent, int flags, int startId) {
		if(intent!=null && Intent.ACTION_NEW_OUTGOING_CALL.equals(intent.getAction())){//去电
			phoneNumber = intent.getStringExtra(Intent.EXTRA_PHONE_NUMBER);
			LogUtils.d("Calling..."+phoneNumber);
			isCalling = true;
		}
		return super.onStartCommand(intent, START_STICKY, startId);
	}

第三:来电秀界面的实现了

CallShowView 来电秀界面 (CallShowView extends View),里面弹屏的核心代码: 

	private void initViews() {
		context = getContext();
		windowManager = (WindowManager) context
				.getSystemService(Context.WINDOW_SERVICE);
		int width = windowManager.getDefaultDisplay().getWidth();
		int height = windowManager.getDefaultDisplay().getHeight();
		// -------------
		params = new LayoutParams();
		params.gravity = Gravity.LEFT | Gravity.TOP;
		params.x = 0;
		params.y = 0;
		params.width = width;
		params.height = height;
		params.screenOrientation = ActivityInfo.SCREEN_ORIENTATION_PORTRAIT;
		// 设置图片格式,效果为背景透明
		params.format = PixelFormat.TRANSLUCENT;
		// 设置Window flag 系统级弹框 | 覆盖表层
		params.type = WindowManager.LayoutParams.TYPE_SYSTEM_ALERT;
		// 不可聚集(不让返回键) | 全屏 | 透明标状态栏
		params.flags = LayoutParams.FLAG_NOT_FOCUSABLE
				| WindowManager.LayoutParams.FLAG_FULLSCREEN
				| WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS
				| WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION
				| WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN ;


		initCalledView();

	}

第四:开机自动启动

/**
 * 自动启动
 * @author Jenly
 */
public class AutoStartReceiver extends BroadcastReceiver {

	public static final String AUTO_START_RECEIVER = "jenly.autostart_action";
	
	@Override
	public void onReceive(Context context, Intent intent) {
		LogUtils.d("AutoStartReceiver");
		
		if(!CallShowService.isRunning)
			startCallShowService(context, intent);
	}
	
	private void startCallShowService(Context context, Intent intent) {
		intent.setClass(context, CallShowService.class);
		context.startService(intent);
	}

}


在CallShowService的生命周期里面需要加上一句核心的代码,保证CallShowService不被进程杀死,如下:
	@Override
	public void onDestroy() {
		isRunning = false;
		sendBroadcast(new Intent(AutoStartReceiver.AUTO_START_RECEIVER));
		super.onDestroy();
	}

第五:注册这些四大组件和申请用到的一些权限
     <!-- 电话状态接收广播 -->
        <receiver android:name=".service.PhoneStateReceiver" >
            <intent-filter>
                <action android:name="android.intent.action.PHONE_STATE" />
                <action android:name="android.intent.action.NEW_OUTGOING_CALL" />
            </intent-filter>
        </receiver>
        
        <receiver android:name=".service.AutoStartReceiver" >
            <intent-filter android:priority="1000">
                <action android:name="android.intent.action.RECEIVE_BOOT_COMPLETED" />
                <action android:name="android.intent.action.USER_PRESENT" />
                <action android:name="jenly.autostart_action" />
            </intent-filter>
        </receiver>

        <service android:name=".service.CallShowService"
            android:enabled="true" >  
		    <intent-filter android:priority="1000" >  
		        <action android:name=".service.CallShowService" />  
		    </intent-filter>  
    	</service>

    <uses-permission android:name="android.permission.WAKE_LOCK" />
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
    <uses-permission android:name="android.permission.RECEIVE_USER_PRESENT" />
    <uses-permission android:name="android.permission.CALL_PHONE" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <!-- 弹出窗口权限 -->
    <uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW" />

这样来电秀算是基本实现了,简单的总结一下几个重要的点:

1、手机来电状态的监听拦截、

2、来去电弹屏、

3、开机启动保证弹屏服务不被后台杀死、

今天就先到这里了,后续会把来电秀界面的电话的接听与挂机也写出来。


posted @ 2016-03-10 19:07  Jenly  阅读(733)  评论(0编辑  收藏