NotificationActivity.java

package com.wuxiaolong.androidsamples.notification;

import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.support.v4.app.NotificationCompat;
import android.support.v4.app.TaskStackBuilder;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;

import com.wuxiaolong.androidsamples.R;

public class NotificationActivity extends AppCompatActivity {
    private int id = 100;
    NotificationCompat.Builder mBuilder;
    NotificationManager mNotificationManager;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_notification);
        mBuilder = new NotificationCompat.Builder(this)
                .setSmallIcon(R.mipmap.icon)
                .setContentTitle("My notification")
                .setContentText("Hello World!");
        mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
    }

    /**
     * 创建简单通知，即常规 Activity，返回回退到主屏幕
     */
    public void notification1(View v) {
        Log.d("wxl", "notification1");

        // Creates an explicit intent for an Activity in your app
        Intent resultIntent = new Intent(this, ResultActivity.class);

        // The stack builder object will contain an artificial back stack for the
        // started Activity.
        // This ensures that navigating backward from the Activity leads out of
        // your application to the Home screen.
        TaskStackBuilder stackBuilder = TaskStackBuilder.create(this);
        // Adds the back stack for the Intent (but not the Intent itself)
        stackBuilder.addParentStack(ResultActivity.class);
        // Adds the Intent that starts the Activity to the top of the stack
        stackBuilder.addNextIntent(resultIntent);
        PendingIntent resultPendingIntent =
                stackBuilder.getPendingIntent(
                        0,
                        PendingIntent.FLAG_UPDATE_CURRENT
                );
        mBuilder.setContentIntent(resultPendingIntent);
        mBuilder.setAutoCancel(true);
        // mId allows you to update the notification later on.
        mNotificationManager.notify(id, mBuilder.build());
    }

    /**
     * 更新通知
     */
    public void notification2(View v) {
        int numMessages = 0;
        mBuilder.setContentText("Hello,World!")
                .setNumber(++numMessages);
        // Because the ID remains unchanged, the existing notification is
        // updated.
        mNotificationManager.notify(id, mBuilder.build());
    }

    /**
     * 删除通知
     */
    public void notification3(View v) {
        // cancelAll()将删除之前发出的所有通知
        mNotificationManager.cancel(id);
    }

    /**
     * 设置特殊Activity
     */
    public void notification4(View v) {
        Intent notifyIntent = new Intent(this, Result2Activity.class);
        // Sets the Activity to start in a new, empty task
        notifyIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK
                | Intent.FLAG_ACTIVITY_CLEAR_TASK);
        // Creates the PendingIntent
        PendingIntent notifyPendingIntent =
                PendingIntent.getActivity(
                        this,
                        0,
                        notifyIntent,
                        PendingIntent.FLAG_UPDATE_CURRENT
                );

        mBuilder.setContentIntent(notifyPendingIntent);
        mNotificationManager.notify(id + 1, mBuilder.build());
    }

    public void notification5(View v) {
        new Thread(new Runnable() {
            @Override
            public void run() {
                int incr;
                // Do the "lengthy" operation 20 times
                for (incr = 0; incr <= 100; incr += 5) {
                    // Sets the progress indicator to a max value, the
                    // current completion percentage, and "determinate"
                    // state
                    mBuilder.setProgress(100, incr, false);
                    // Displays the progress bar for the first time.
                    mNotificationManager.notify(id, mBuilder.build());
                    // Sleeps the thread, simulating an operation
                    // that takes time
                    try {
                        // Sleep for 5 seconds
                        Thread.sleep(5 * 1000);
                    } catch (InterruptedException e) {
                    }
                }
                // When the loop is finished, updates the notification
                mBuilder.setContentText("Download complete")
                        // Removes the progress bar
                        .setProgress(0, 0, false);
                mNotificationManager.notify(id, mBuilder.build());
            }
        }
        ).start();
    }
}