自定义通知栏，并注册点击事件

描述

效果图

代码

/**
* function: 自定义通知栏
* Created by wiky on 2016/6/27.
*/
public class MyNotification {
private static final String TAG = "ProgressNotification";
public final static String INTENT_BUTTONID_TAG = "ButtonId";
/**
* 通知栏按钮点击事件对应的ACTION（标识广播）
*/
public final static String ACTION_BUTTON = "com.notification.intent.action.ButtonClick";
/**
* 标识按钮状态：是否在播放
*/
public boolean isPlay = false;
/**
* 通知栏按钮广播
*/
public ButtonBroadcastReceiver receiver;

/**
* 播放/暂停 按钮点击 ID
*/
public final static int BUTTON_PALY_ID = 1;
private final int NOTIFICATION_ID = 0xa01;
private final int REQUEST_CODE = 0xb01;

private Context context;

private NotificationManager notificationManager;
private RemoteViews contentView;
private Notification notification;

public MyNotification(Context context) {
this.context = context;
}

/**
* 初始化通知栏信息，并显示
*
* @param appName      下载的应用图标
* @param networkSpeed 网速
* @param currentSize  当前下载进度（包大小）
* @param totalSize    总的包大小
*/
public void initAndNotify(String appName, String networkSpeed, String currentSize, String totalSize) {
notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(context);
// 此处设置的图标仅用于显示新提醒时候出现在设备的通知栏
mBuilder.setSmallIcon(R.mipmap.ic_launcher);
notification = mBuilder.build();

// 当用户下来通知栏时候看到的就是RemoteViews中自定义的Notification布局
contentView = new RemoteViews(context.getPackageName(), R.layout.progress_bar_layout);
//设置通知栏信息
contentView.setTextViewText(R.id.txt_appName, appName);//应用名称
contentView.setTextViewText(R.id.txt_network_speed, networkSpeed + "kb/s");//当前网速
StringBuffer stringBuffer = new StringBuffer(currentSize);
stringBuffer.append("/");
stringBuffer.append(totalSize);
stringBuffer.append("M");
contentView.setTextViewText(R.id.txt_size_progress, stringBuffer.toString());//当前下载进度
//如果版本号低于（3.0），那么不显示按钮
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.HONEYCOMB) {
contentView.setViewVisibility(R.id.btn_download, View.GONE);
} else {
//注册广播
receiver = new ButtonBroadcastReceiver();
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(ACTION_BUTTON);
context.registerReceiver(receiver, intentFilter);
//设置按钮
contentView.setImageViewResource(R.id.btn_download, R.drawable.btn_notification_play);
//设置点击的事件
Intent buttonIntent = new Intent(ACTION_BUTTON);
buttonIntent.putExtra(INTENT_BUTTONID_TAG, BUTTON_PALY_ID);
PendingIntent intent_paly = PendingIntent.getBroadcast(context, BUTTON_PALY_ID, buttonIntent, PendingIntent.FLAG_UPDATE_CURRENT);
contentView.setOnClickPendingIntent(R.id.btn_download, intent_paly);
}

notification.contentView = contentView;
// 点击notification自动消失
notification.flags = Notification.FLAG_AUTO_CANCEL;
// 需要注意的是，作为选项，此处可以设置MainActivity的启动模式为singleTop，避免重复新建onCreate()。
Intent intent = new Intent(context, MainActivity.class);
// 当用户点击通知栏的Notification时候，切换回TaskDefineActivity。
PendingIntent pi = PendingIntent.getActivity(context, REQUEST_CODE,
intent, PendingIntent.FLAG_UPDATE_CURRENT);
notification.contentIntent = pi;

// 发送到手机的通知栏
notificationManager.notify(NOTIFICATION_ID, notification);
}

/**
* （通知栏中的点击事件是通过广播来通知的，所以在需要处理点击事件的地方注册广播即可）
* 广播监听按钮点击事件
*/
public class ButtonBroadcastReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();
if (action.equals(ACTION_BUTTON)) {
//通过传递过来的ID判断按钮点击属性或者通过getResultCode()获得相应点击事件
int buttonId = intent.getIntExtra(INTENT_BUTTONID_TAG, 0);
switch (buttonId) {
case BUTTON_PALY_ID:
Log.d(TAG, "点击播放/暂停按钮");
onDownLoadBtnClick();
break;
default:
break;
}
}
}
}

private void onDownLoadBtnClick() {
if (isPlay) {
//当前是进行中，则暂停
isPlay = false;
contentView.setImageViewResource(R.id.btn_download, R.drawable.btn_notification_pause);
}else {
//当前暂停，则开始
isPlay = true;
contentView.setImageViewResource(R.id.btn_download, R.drawable.btn_notification_play);
}
notificationManager.notify(NOTIFICATION_ID, notification);
}

/**
* 关闭通知
*/
public void cancel() {
if (receiver != null) {
context.unregisterReceiver(receiver);
}
if (notificationManager != null) {
notificationManager.cancel(NOTIFICATION_ID);
}
}
}

布局

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#00000000"
android:orientation="horizontal"
android:padding="5dp">

<ImageView
android:id="@+id/iv_appIcon"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_margin="4dp"
android:background="@mipmap/ic_launcher"/>

<LinearLayout
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1"
android:layout_gravity="center_vertical"
android:layout_marginLeft="4dp"
android:layout_marginStart="4dp"
android:orientation="vertical">

<TextView
android:id="@+id/txt_appName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="16sp"
/>

<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="4dp"
android:orientation="horizontal">

<TextView
android:id="@+id/txt_network_speed"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="12sp"
/>

<TextView
android:id="@+id/txt_size_progress"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="8dp"
android:layout_marginStart="4dp"
android:textSize="12sp"
/>
</LinearLayout>

</LinearLayout>

<ImageView
android:id="@+id/btn_download"
android:layout_width="48dp"
android:layout_height="48dp"
android:layout_margin="4dp"
/>
</LinearLayout>