Android-Service实现手机壁纸自动更换

本文实例为大家分享了android service实现自动更换手机壁纸的具体代码，供大家参考，具体内容如下

先看下效果：

使用界面：

划重点，使用service前别忘了给相应的service添加服务

<service android:name=".changeservice"></service>

具体实现：

首先定义changeservice类，继承service访问系统实现壁纸切换

public class changeservice extends service {
  int[] wallpapers = new int[]{
      r.drawable.a2, r.drawable.a3, r.drawable.a4
  };
  wallpapermanager wallpapermanager;
  int current = 0;
  @override
  public void oncreate() {
    super.oncreate();
    wallpapermanager = wallpapermanager.getinstance(this);
  }
  @override
  public int onstartcommand(intent intent, int flags, int startid) {
    if (current >= 3) {
      current = 0;
    } try {
      wallpapermanager.setresource(wallpapers[current++]);
    } catch (ioexception e) {
      e.printstacktrace();
    } return start_sticky;
  }
  @nullable
  @override
  public ibinder onbind(intent intent) {
    return null;
  }
}

这里我们用闹钟访问pendingintent来实现壁纸更换：

public class mainactivity extends activity {
  private button mstart;
  private button mstop;

  @override
  protected void oncreate(bundle savedinstancestate) {
    super.oncreate(savedinstancestate);
    setcontentview(r.layout.activity_main);

    mstart = (button) findviewbyid(r.id.start);
    mstop = (button) findviewbyid(r.id.stop);

    final intent intent = new intent(mainactivity.this, changeservice.class);
     final pendingintent pi = pendingintent.getservice(mainactivity.this, 0, intent, 0);
     mstart.setonclicklistener(new view.onclicklistener() {
       @override
       public void onclick(view v) {
         alarmmanager alarmmanager = (alarmmanager) getsystemservice(service.alarm_service);
         alarmmanager.setrepeating(alarmmanager.elapsed_realtime_wakeup, 0, 2000, pi);
         mstart.setenabled(false); mstop.setenabled(true);
         toast.maketext(mainactivity.this, "壁纸定时更换启动成功啦", toast.length_short).show();
       }
     });
     mstop.setonclicklistener(new view.onclicklistener() {
       @override public void onclick(view v) {
         mstart.setenabled(true);
       mstop.setenabled(false);

       alarmmanager alarmmanager = (alarmmanager) getsystemservice(service.alarm_service);
        alarmmanager.cancel(pi);
       }
     });
  }
}

布局设计：

<?xml version="1.0" encoding="utf-8"?>
<relativelayout
  xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:tools="http://schemas.android.com/tools"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:orientation="vertical" >

  <linearlayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_alignparentbottom="true"
    android:orientation="horizontal">

    <button
      android:id="@+id/start"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_weight="1"
      android:gravity="center_horizontal"
      android:text="start"
      android:textsize="25dp"
      android:textcolor="#ffffffff"/>

    <button
      android:id="@+id/stop"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_weight="1"
      android:gravity="center_horizontal"
      android:text="stop"
      android:textsize="25dp"
      android:textcolor="#ffffffff"/>
  </linearlayout>

</relativelayout>

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。