Android|Android Notification实现动态显示通话时间 AndroidNotification实现动态显示通

基于android N MTK释放的源码，供大家参考，具体内容如下
本文主要讲解如何在 IncallUI 的notification 上面不停地更新显示当前已通话多长时间，从而达到和incallUI通话界面上的通话时间一致。
主要思路 1、我们需要知道通话建立时的时间，即call 的状态从 INCOMING或者DIALING 转变成ACTIVE的时候
2、时间每秒钟都会发生变化，所以我们就需要不停的更新notification的界面，我们这里是不停的创建和notify同一个notification，已到达更新时间的效果
3、我们需要CallTimer线程不停的帮我们计算时间，并控制界面的更新

代码实现这里是在源码incallUI目录下的StatusBarNotifier.java中修改

....省略部分代码//震动时长，这里为不振动private static final long[] IN_CALL_VIBRATE_PATTERN_NULL = new long[] {0, 0, 0}; //线程隔多久执行一次已ms为单位，这里为1Sprivate static final long CALL_TIME_UPDATE_INTERVAL_MS = 1000; //我们需要获取一些全局的变量，已到达不停的创建notification并更新同一个notification的UIprivate CallTimer mCallTimer; private Notification.Builder mCopyBuilder; private intmCopyCallState; private ContactCacheEntry mCopyContactInfo; private int mCopyNotificationType; //当前notification的ID,通过这个ID我们可以一直更新同一个notification并且只会弹出一次private Bitmap mCopyLargeIcon; public StatusBarNotifier(Context context, ContactInfoCache contactInfoCache) {.......省略部分代码//StatusBarNotifier初始化的时候就创建CallTimer对象，用来计算时间和更新UImCallTimer = new CallTimer(new Runnable() {@Overridepublic void run() {updateCallTime(); //更新UI的函数}}); }@Overridepublic void onStateChange(InCallState oldState, InCallState newState, CallList callList) {if (callList.getActiveCall() == null || callList.getActiveCall().getState() != Call.State.ACTIVE){//当通话结束时需要取消计算时间的线程mCallTimer.cancel(); }}//系统构建notification的方法private void buildAndSendNotification(Call originalCall, ContactCacheEntry contactInfo) {....省略部分代码else if (callState == Call.State.ACTIVE && !mIsCallUiShown) {//保存一个公共的变量到全部变量里面，方便后面构造新的notification并刷新copyInfoFromHeadsUpView(builder, callState, contactInfo, notificationType, largeIcon); //下面是计算显示的时间final long callStart = call.getConnectTimeMillis(); final long duration = System.currentTimeMillis() - callStart; //创建一个HeadsUpView显示在notification上面RemoteViews inCall = createInCallHeadsUpView(duration / 1000, largeIcon); builder.setContent(inCall); builder.setCustomHeadsUpContentView(inCall); //系统原生的方法最后notify通知fireNotification(builder, callState, contactInfo, notificationType); //开始我们的计时线程mCallTimer.start(CALL_TIME_UPDATE_INTERVAL_MS); }.....省略部分代码}private RemoteViews createInCallHeadsUpView(Long callDuration, Bitmap contactAvatar) {RemoteViews headsUpView = new RemoteViews(mContext.getPackageName(), R.layout.in_call_headsup); if (null != contactAvatar) {headsUpView.setImageViewBitmap(R.id.in_call_hu_avatar, contactAvatar); }//格式化时间String callTimeElapsed = DateUtils.formatElapsedTime(callDuration); headsUpView.setTextViewText(R.id.in_call_hu_elapsedTime, callTimeElapsed); return headsUpView; }/*according the mCallTimer to update time data*/public void updateCallTime() {Call call = CallList.getInstance().getActiveCall(); final long callStart = call.getConnectTimeMillis(); final long duration = System.currentTimeMillis() - callStart; RemoteViews inCall = createInCallHeadsUpView(duration / 1000, mCopyLargeIcon); mCopyBuilder.setContent(inCall); mCopyBuilder.setCustomHeadsUpContentView(inCall); Notification notification = mCopyBuilder.build(); notification.vibrate = IN_CALL_VIBRATE_PATTERN_NULL; mNotificationManager.notify(mCopyNotificationType, notification); }/*Change local variablesto global variables*/private void copyInfoFromHeadsUpView(Notification.Builder builder, int callState, ContactCacheEntry contactInfo,int notificationType, Bitmap largeIcon){mCopyBuilder = builder; mCopyCallState = callState; mCopyContactInfo = contactInfo; mCopyNotificationType = notificationType; mCopyLargeIcon = largeIcon; }........省略部分代码

CallTimer源码如下

package com.android.incallui; import com.google.common.base.Preconditions; import android.os.Handler; import android.os.SystemClock; /** * Helper class used to keep track of events requiring regular intervals. */public class CallTimer extends Handler {private Runnable mInternalCallback; private Runnable mCallback; private long mLastReportedTime; private long mInterval; private boolean mRunning; public CallTimer(Runnable callback) {Preconditions.checkNotNull(callback); mInterval = 0; mLastReportedTime = 0; mRunning = false; mCallback = callback; mInternalCallback = new CallTimerCallback(); }public boolean start(long interval) {if (interval <= 0) {return false; }// cancel any previous timercancel(); mInterval = interval; mLastReportedTime = SystemClock.uptimeMillis(); mRunning = true; periodicUpdateTimer(); return true; }public void cancel() {removeCallbacks(mInternalCallback); mRunning = false; }private void periodicUpdateTimer() {if (!mRunning) {return; }final long now = SystemClock.uptimeMillis(); long nextReport = mLastReportedTime + mInterval; while (now >= nextReport) {nextReport += mInterval; }postAtTime(mInternalCallback, nextReport); mLastReportedTime = nextReport; // Run the callbackmCallback.run(); }private class CallTimerCallback implements Runnable {@Overridepublic void run() {periodicUpdateTimer(); }}}

【Android|Android Notification实现动态显示通话时间】以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。