android Notification实践

1，先是布局  R.layout.activity_notification

<?xml version="1.0" encoding="utf-8"?><android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:app="http://schemas.android.com/apk/res-auto"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    tools:context="com.example.halong.myapplication.Notification.NotificationActivity">    <LinearLayout        android:layout_width="match_parent"        android:layout_height="match_parent"        android:orientation="vertical">        <Button            android:id="@+id/button1"            android:layout_width="match_parent"            android:layout_height="wrap_content"            android:text="show a default notification."            android:textAllCaps="false"/>        <Button            android:id="@+id/button2"            android:layout_width="match_parent"            android:layout_height="wrap_content"            android:text="show a custom notification."            android:textAllCaps="false"/>    </LinearLayout></android.support.constraint.ConstraintLayout>

2，NotificationActivity

public class NotificationActivity extends AppCompatActivity implements View.OnClickListener {    /**     * show a default notification.     */    private Button mButton1;    /**     * show a custom notification.     */    private Button mButton2;    private NotificationManager mNotificationManager;    private NotificationCompat.Builder mDefaultNotificationBuilder;    private NotificationCompat.Builder mCustomNotificationBuilder;    private RemoteViews mCostomContenView;    private BroadcastReceiver mReceiver;    private Handler mHandler;    private MyThread mThread = null;    private int progress = 0;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_notification);        initData();        initView();    }    @Override    protected void onStart() {        super.onStart();        //注册BroadcastReceiver        IntentFilter filter = new IntentFilter();        filter.addAction("PauseOrContinue");        filter.addAction("Exit");        registerReceiver(mReceiver, filter);        //开启ProgressBar更新线程        if (mThread != null && !mThread.isAlive()) {            mThread.start();        }    }    @Override    protected void onStop() {        //注销BroadcastReceiver        unregisterReceiver(mReceiver);        //关闭更新线程        if (mThread != null && mThread.isAlive()) {            mThread.interrupt();        }        super.onStop();    }    //以下是自定义方法    private void initData() {        mNotificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);        mDefaultNotificationBuilder = new NotificationCompat.Builder(this);        mCustomNotificationBuilder = new NotificationCompat.Builder(this);        mCostomContenView = new RemoteViews(getPackageName(), R.layout.layout_notification);        mReceiver = new BroadcastReceiver() {            @Override            public void onReceive(Context context, Intent intent) {                switch (intent.getAction()) {                    case "PauseOrContinue":                        if (mThread.isPause) {                            mCostomContenView.setTextViewText(R.id.text1, "Pause");                            mCustomNotificationBuilder.setCustomContentView(mCostomContenView);                            mNotificationManager.notify(1, mCustomNotificationBuilder.build());                            mThread.goon();                        } else {                            mCostomContenView.setTextViewText(R.id.text1, "Continue");                            mCustomNotificationBuilder.setCustomContentView(mCostomContenView);                            mNotificationManager.notify(1, mCustomNotificationBuilder.build());                            mThread.pause();                        }                        break;                    case "Exit":                        mThread.pause();                        mNotificationManager.cancel(1);                        break;                }            }        };        mHandler = new Handler() {            @Override            public void handleMessage(Message msg) {                super.handleMessage(msg);                Log.d("==>", msg.what + "");                switch (msg.what) {                    case 1:                        if (progress >= 100) {                            mThread.pause();                            mNotificationManager.cancel(1);                        } else {                            progress++;                            mCostomContenView.setProgressBar(R.id.progress, 100, progress, false);                            mCustomNotificationBuilder.setCustomContentView(mCostomContenView);                            mNotificationManager.notify(1, mCustomNotificationBuilder.build());                        }                        break;                }            }        };        mThread = new MyThread(mHandler);    }    private void initView() {        mButton1 = (Button) findViewById(R.id.button1);        mButton1.setOnClickListener(this);        mButton2 = (Button) findViewById(R.id.button2);        mButton2.setOnClickListener(this);    }    @Override    public void onClick(View v) {        switch (v.getId()) {            case R.id.button1:                showDefaultNotification();                break;            case R.id.button2:                showCustomNotification();                progress = 0;                mThread.goon();                break;        }    }    public void showDefaultNotification() {        Intent intent = new Intent(this, NotificationActivity.class);        PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT);        mDefaultNotificationBuilder.setSmallIcon(R.mipmap.ic_launcher)                .setLargeIcon(BitmapFactory.decodeResource(getResources(), R.mipmap.ic_launcher))                .setTicker("this is a default notification.")                .setContentTitle("content tittle")                .setContentText("this is a default notification.")                .setDefaults(Notification.DEFAULT_ALL)                .setNumber(1)                .setWhen(System.currentTimeMillis())                .setContentIntent(pendingIntent)                .setAutoCancel(true)                .addAction(R.mipmap.ic_launcher, "click1", pendingIntent)                .addAction(R.mipmap.ic_launcher, "click2", pendingIntent)                .setProgress(100, 20, true);        mNotificationManager.notify(0, mDefaultNotificationBuilder.build());    }    private void showCustomNotification() {        mCustomNotificationBuilder.setSmallIcon(R.mipmap.ic_launcher)                .setTicker("mCustomNotificationBuilder");        mCostomContenView.setTextViewText(R.id.text1, "Pause");        Intent intent = new Intent("PauseOrContinue");        PendingIntent pendingIntent = PendingIntent.getBroadcast(this, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT);        mCostomContenView.setOnClickPendingIntent(R.id.text1, pendingIntent);        Intent intent2 = new Intent("Exit");        PendingIntent pendingIntent2 = PendingIntent.getBroadcast(this, 0, intent2, PendingIntent.FLAG_CANCEL_CURRENT);        mCostomContenView.setOnClickPendingIntent(R.id.text2, pendingIntent2);        mCostomContenView.setProgressBar(R.id.progress, 100, 0, false);        mCustomNotificationBuilder.setCustomContentView(mCostomContenView);        mCustomNotificationBuilder.setOngoing(true);        mNotificationManager.notify(1, mCustomNotificationBuilder.build());    }    //时间线程  Thread + Handler用来更新ProgressBar    class MyThread extends Thread {        Handler mHandler;        boolean isStop = false;        boolean isPause = true;        public MyThread(Handler mHandler) {            this.mHandler = mHandler;        }        @Override        public void run() {            super.run();            while (!isStop) {                if (!isPause) {                    mHandler.sendEmptyMessage(1);                }                try {                    Thread.sleep(100);                } catch (InterruptedException e) {                    e.printStackTrace();                }            }        }        public void pause() {            isPause = true;        }        public void goon() {            isPause = false;        }        @Override        public void interrupt() {            isPause=true;            isStop=true;            super.interrupt();        }    }}