<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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"
android:orientation="vertical"
tools:context=".MainActivity">
<Button
android:text="General notification"
android:onClick="normal"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
<Button
android:text="group notification"
android:onClick="groupNotify"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
<Button
android:text="progress bar notification"
android:onClick="progressNotify"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
<Button
android:text="custom notification"
android:onClick="divNotify"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
</LinearLayout>
package com.bawei.day3_notificationdemo;
import androidx.appcompat.app.AppCompatActivity;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Intent;
import android.os.Build;
import android.os.Bundle;
import android.view.KeyEvent;
import android.view.View;
import android.widget.RemoteViews;
import android.widget.Toast;
import com.bumptech.glide.Glide;
import com.bumptech.glide.request.target.NotificationTarget;
import java.util.Timer;
import java.util.TimerTask;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R. layout. activity_main);
}
//General notification
public void normal(View view){
// Get the notification manager, because it is a system service, so it needs to be forced
NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
// The object to get the notification is a builder, chain programming structure, creator mode
Notification.Builder builder = new Notification.Builder(this);
builder.setSmallIcon(R.mipmap.ic_launcher);//Set the notification small icon, must be set
builder.setContentTitle("Notification");//Title
builder.setContentText("I am a normal message notification");//Content
builder.setAutoCancel(true);//Set whether to delete
//builder.setLargeIcon();//Set large icon
//Set the notification effect Notification.DEFAULT_ALL means all, Notification.DEFAULT_LIGHTS light Notification.DEFAULT_SOUND sound Notification.DEFAULT_VIBRATE vibration
builder.setDefaults(Notification.DEFAULT_ALL);
Intent intent = new Intent(this, MainActivity. class);
PendingIntent pendingIntent = PendingIntent.getActivity(this,101,intent,PendingIntent.FLAG_UPDATE_CURRENT);
builder.setContentIntent(pendingIntent);//Set the intent to make the notification jump
Notification notification = builder. build();
//send notification
notificationManager.notify(1, notification);//or report an error, remember to add notification permissions
}
// group notification
public void groupNotify(View view){
// Get the notification manager, because it is a system service, so it needs to be forced
NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
//Get the notification object, which is a builder, chain programming structure, creator mode
Notification builder1 = new Notification. Builder(this)
.setSmallIcon(R.mipmap.ic_launcher)
.setContentTitle("Notice 1")
.setContentText("Notification 1 content")
.setGroup("a")//Group notification key position, set the notification group
.setGroupSummary(true)//Whether to overlap, do not display, fold at the bottom
.build();
Notification builder2 = new Notification. Builder(this)
.setSmallIcon(R.mipmap.ic_launcher)
.setContentTitle("Notice 2")
.setContentText("Notification 2 content")
.setGroup("a")//Group notification key position, set the notification group
.setGroupSummary(true)//Whether to overlap, do not display, fold at the bottom
.build();
Notification builder3 = new Notification. Builder(this)
.setSmallIcon(R.mipmap.ic_launcher)
.setContentTitle("Notice 3")
.setContentText("Notification 3 content")
.setGroup("b")//Group notification key position, set the notification group
.setGroupSummary(true)//Whether to overlap, do not display, fold at the bottom
.build();
Notification builder4 = new Notification. Builder(this)
.setSmallIcon(R.mipmap.ic_launcher)
.setContentTitle("Notice 4")
.setContentText("Notification 4 content")
.setGroup("b")//Group notification key position, set the notification group
.setGroupSummary(true)//Whether to overlap, do not display, fold at the bottom
.build();
notificationManager. notify(1, builder1);
notificationManager. notify(2, builder2);
notificationManager. notify(3, builder3);
notificationManager. notify(4, builder4);
}
private Timer timer;
//Progress bar notification, mainly need to use timer or thread to update notification
public void progressNotify(View view){
// Get the notification manager, because it is a system service, so it needs to be forced
NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
Notification.Builder builder = new Notification.Builder(this)
.setSmallIcon(R.mipmap.ic_launcher)
.setContentTitle("Download")
.setProgress(100,0,false);//The maximum value of the parameter progress bar, the current progress, whether to display the progress indistinctly
notificationManager. notify(6, builder. build());
timer = new Timer();
timer.schedule(new TimerTask() {
int progress = 0;
@Override
public void run() {
if (progress == 100){
notificationManager. cancel(6);
timer. cancel();
} else {
builder.setProgress(100,progress += 10,false);
notificationManager. notify(6, builder. build());
}
}
},0,1000);
}
//custom notification
public void divNotify(View view){
//Get the notification manager
NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
//Use the remote View to load the layout
RemoteViews remoteViews = new RemoteViews(getPackageName(), R.layout.diy);
//Modify the remote text and assign a value to the text
remoteViews.setTextViewText(R.id.tv,"You are so beautiful");
//Load a local image, the first parameter is the id, the second parameter is the local image that needs to be replaced or loaded
remoteViews.setImageViewResource(R.id.play,R.drawable.ic_pause);
//Set the local image in the remote layout
Notification notification = null;
//Use setCustomContentView
if (android.os.Build.VERSION.SDK_INT >= Build.VERSION_CODES.N){
notification = new Notification. Builder(this)
.setSmallIcon(R.mipmap.ic_launcher)
.setCustomContentView(remoteViews)///Load remote layout
.build();
}
//send notification
notificationManager. notify(7, notification);
//load network image
//parameters, context, location where images need to be loaded, remote views (remoteViews), current notification, notification id
NotificationTarget notificationTarget = new NotificationTarget(this,R.id.iv,remoteViews,notification,7);
Glide.with(this).asBitmap().load("http://43.143.146.165:8080/class5server/image/1.jpg").into(notificationTarget);
}
//Double click the return key to exit
private long first;//Record the time of the first click
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
if (keyCode == KeyEvent. KEYCODE_BACK){
//Find the returned key value, through keyCode, you can get whether the current click is the return key
//The error between two clicks is 2 seconds, it is considered to be a connection, and you can exit the app, otherwise it will prompt "click again to exit the app"
long second = System.currentTimeMillis();//The time of the second click
if (second - first > 2000){
first = second;//Assign the time of the second click to the first time for the next comparison
Toast.makeText(this, "Click again to exit the app", Toast.LENGTH_SHORT).show();
return true;
}
}
return super.onKeyDown(keyCode, event);
}
}
<?xml version="1.0" encoding="utf-8"?>
<!--Custom notification-->
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<ImageView
android:id="@ + id/iv"
android:padding="10dp"
android:src="@mipmap/ic_launcher"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<LinearLayout
android:padding="15dp"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="@ + id/tv"
android:text="song name"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"/>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:orientation="horizontal">
<ImageView
android:id="@ + id/previous"
android:src="@drawable/ic_previous"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="match_parent"/>
<ImageView
android:id="@ + id/play"
android:src="@drawable/ic_play"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="match_parent"/>
<ImageView
android:id="@ + id/next"
android:src="@drawable/ic_next"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="match_parent"/>
</LinearLayout>
</LinearLayout>
</LinearLayout>