android通知应用程序工作不正常
您好,最近我启动了android应用程序开发人员。所以你可以说我是一个初学者。我正在尝试开发一个基本的通知应用程序。此应用程序现在能够显示通知,但单击虚拟设备顶部的通知图标时,什么也没有发生。问题是它应该启动一个名为NotificationView的新活动,但它无法启动该活动 MainActivity.javaandroid通知应用程序工作不正常,android,android-layout,android-intent,android-activity,Android,Android Layout,Android Intent,Android Activity,您好,最近我启动了android应用程序开发人员。所以你可以说我是一个初学者。我正在尝试开发一个基本的通知应用程序。此应用程序现在能够显示通知,但单击虚拟设备顶部的通知图标时,什么也没有发生。问题是它应该启动一个名为NotificationView的新活动,但它无法启动该活动 MainActivity.java package com.example.notification1; import android.app.Notification; import android.app.N
package com.example.notification1;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Intent;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.Button;
public class MainActivity extends ActionBarActivity {
Button b1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
b1=(Button)findViewById(R.id.button);
b1.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Notify("You've received new message","");
}
});
}
private void Notify(String notificationTitle, String notificationMessage){
NotificationManager notificationManager = (NotificationManager) getSystemService(NOTIFICATION_SERVICE);
@SuppressWarnings("deprecation")
Notification notification = new Notification(R.drawable.ic_launcher,"New Message", System.currentTimeMillis());
Intent notificationIntent = new Intent(this,NotificationView.class);
PendingIntent pendingIntent = PendingIntent.getActivity(this, 0,notificationIntent, 0);
notification.setLatestEventInfo(MainActivity.this, notificationTitle,notificationMessage, pendingIntent);
notificationManager.notify(9999, notification);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
NotificationView.java
package com.example.notification1;
import android.os.Bundle;
import android.app.Activity;
public class NotificationView extends Activity{
@Override
public void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.notification);
}
}
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.notification1"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="8"
android:targetSdkVersion="18" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".NotificationView"
android:label="@string/app_name" >
</activity>
</application>
</manifest>
不要使用静态通知ID。这不是个好主意
notificationManager.notify(9999, notification);
创建如下内容,例如:
int notificationId = System.currentTimeMillis()/1000;
notificationManager.notify(notificationId, notification);
这对我总是有用的。有关PendingEvent通知的更多信息
让我知道它是否适合您;) 尝试使用NotificationCompat,您将在不同的设备上获得更好的支持,我写道:这是您的一个示例。并确保您已经在应用程序模块的
build.gradle
中编译了com.android.support:appcompat-v7
NotificationManager mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
Intent intentNotif = new Intent(this, NotificationView.class);
intentNotif.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
PendingIntent pendIntent = PendingIntent.getActivity(this, 0, intentNotif, PendingIntent.FLAG_UPDATE_CURRENT);
NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(this)
.setSmallIcon(R.drawable.ic_launcher)
.setAutoCancel(true)
.setOngoing(false)
.setContentIntent(pendIntent)
.setContentTitle("Title here")
.setContentText("Notification content!")
.setTicker("This is ticker!");
int id = 1234;
mNotificationManager.notify(id, mBuilder.build());
我运行了您的代码,可以启动
NotificationView
,而无需更改代码中的任何内容
我想您可能没有在AndroidManifest.xml
文件中声明NotificationView
。所有活动都必须在AndroidManifest.xml
中声明。您的AndroidManifest.xml
必须如下所示:
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".NotificationView"
android:label="@string/app_name" />
</application>
main活动
将被声明,您只需声明NotificationView
。希望这能解决
标签中的问题。我不确定您发布的日志是否属于您的应用程序。你能解释一下当你点击通知时发生了什么吗?你在测试什么版本的Android操作系统?你们在emulator上测试吗?是的,我在android 4.3.1的emulator上测试。当我点击通知图标时,什么也没有发生。它应该会启动我刚刚用模拟器测试过的所需的活动,即使在那里也能正常工作。您是否在状态栏上向下滑动后单击通知?看起来您需要在onCreate方法或runonUIThread中执行大量指令。请考虑做线程,可运行或异步任务为您的长期操作。阅读有关此警告的更多信息“应用程序可能在其主线程上做了太多工作。”
int notificationId = System.currentTimeMillis()/1000;
notificationManager.notify(notificationId, notification);
NotificationManager mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
Intent intentNotif = new Intent(this, NotificationView.class);
intentNotif.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_SINGLE_TOP);
PendingIntent pendIntent = PendingIntent.getActivity(this, 0, intentNotif, PendingIntent.FLAG_UPDATE_CURRENT);
NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(this)
.setSmallIcon(R.drawable.ic_launcher)
.setAutoCancel(true)
.setOngoing(false)
.setContentIntent(pendIntent)
.setContentTitle("Title here")
.setContentText("Notification content!")
.setTicker("This is ticker!");
int id = 1234;
mNotificationManager.notify(id, mBuilder.build());
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name=".NotificationView"
android:label="@string/app_name" />
</application>