自定义通知栏，并注册点击事件

描述

如题

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>