圣诞节,写个程序练练手————Android 全界面悬浮按钮实现
程序员文章站
2023-12-19 15:37:40
开始我以为悬浮窗口,可以用android中得popupwindow 来实现,虽然也实现了,但局限性非常大。比如popupwindow必须要有载体view,也就是说,必须要指...
开始我以为悬浮窗口,可以用android中得popupwindow 来实现,虽然也实现了,但局限性非常大。比如popupwindow必须要有载体view,也就是说,必须要指定在那个view的上面来实现。以该view为相对位置,来显示popupwindow。这就局限了其智能在用户交互的窗口上,相对的显示。而无法*的拖动位置和在桌面显示。
于是查阅了一些资料,有两种实现方法。一种是自定义toast,toast是运行于所有界面之上的,也就是说没有界面可以覆盖它。另一种是android中得compatmodewrapper类,conmpatmodewrapper是基类,实现大部分功能的是它的内部类windowmanagerimpl。该对象可以通过getapplication().getsystemservice(context.window_service)得到。(注:如果是通过activity.getsystemservice(context.window_service)得到的只是属于activity的localwindowmanager)。
简单的介绍之后,我们直接来看代码实现,注释已经写在代码中。
mainactivity.java package com.example.floatviewdemo; import com.example.floatviewdemo.service.floatviewservice; import android.app.activity; import android.content.intent; import android.os.bundle; public class mainactivity extends activity { @override protected void oncreate(bundle savedinstancestate) { super.oncreate(savedinstancestate); setcontentview(r.layout.activity_main); } @override protected void onstart() { intent intent = new intent(mainactivity.this, floatviewservice.class); //启动floatviewservice startservice(intent); super.onstart(); } @override protected void onstop() { // 销毁悬浮窗 intent intent = new intent(mainactivity.this, floatviewservice.class); //终止floatviewservice stopservice(intent); super.onstop(); } }
activity_main.xml
<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:background="#fff" android:paddingbottom="@dimen/activity_vertical_margin" android:paddingleft="@dimen/activity_horizontal_margin" android:paddingright="@dimen/activity_horizontal_margin" android:paddingtop="@dimen/activity_vertical_margin" tools:context="com.example.floatviewdemo.mainactivity" > <textview android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/hello_world" /> </relativelayout>
实现悬浮窗功能的service类
package com.example.floatviewdemo.service; import com.example.floatviewdemo.r; import android.annotation.suppresslint; import android.app.service; import android.content.intent; import android.graphics.pixelformat; import android.os.ibinder; import android.util.log; import android.view.gravity; import android.view.layoutinflater; import android.view.motionevent; import android.view.view; import android.view.view.onclicklistener; import android.view.view.ontouchlistener; import android.view.windowmanager; import android.view.windowmanager.layoutparams; import android.widget.imagebutton; import android.widget.linearlayout; import android.widget.toast; public class floatviewservice extends service { private static final string tag = "floatviewservice"; //定义浮动窗口布局 private linearlayout mfloatlayout; private windowmanager.layoutparams wmparams; //创建浮动窗口设置布局参数的对象 private windowmanager mwindowmanager; private imagebutton mfloatview; @override public void oncreate() { super.oncreate(); log.i(tag, "oncreate"); createfloatview(); } @suppresswarnings("static-access") @suppresslint("inflateparams") private void createfloatview() { wmparams = new windowmanager.layoutparams(); //通过getapplication获取的是windowmanagerimpl.compatmodewrapper mwindowmanager = (windowmanager)getapplication().getsystemservice(getapplication().window_service); //设置window type wmparams.type = layoutparams.type_phone; //设置图片格式,效果为背景透明 wmparams.format = pixelformat.rgba_8888; //设置浮动窗口不可聚焦(实现操作除浮动窗口外的其他可见窗口的操作) wmparams.flags = layoutparams.flag_not_focusable; //调整悬浮窗显示的停靠位置为左侧置顶 wmparams.gravity = gravity.left | gravity.top; // 以屏幕左上角为原点,设置x、y初始值,相对于gravity wmparams.x = 0; wmparams.y = 152; //设置悬浮窗口长宽数据 wmparams.width = windowmanager.layoutparams.wrap_content; wmparams.height = windowmanager.layoutparams.wrap_content; layoutinflater inflater = layoutinflater.from(getapplication()); //获取浮动窗口视图所在布局 mfloatlayout = (linearlayout) inflater.inflate(r.layout.alert_window_menu, null); //添加mfloatlayout mwindowmanager.addview(mfloatlayout, wmparams); //浮动窗口按钮 mfloatview = (imagebutton) mfloatlayout.findviewbyid(r.id.alert_window_imagebtn); mfloatlayout.measure(view.measurespec.makemeasurespec(0, view.measurespec.unspecified), view.measurespec .makemeasurespec(0, view.measurespec.unspecified)); //设置监听浮动窗口的触摸移动 mfloatview.setontouchlistener(new ontouchlistener() { boolean isclick; @suppresslint("clickableviewaccessibility") @override public boolean ontouch(view v, motionevent event) { switch (event.getaction()) { case motionevent.action_down: mfloatview.setbackgroundresource(r.drawable.circle_red); isclick = false; break; case motionevent.action_move: isclick = true; // getrawx是触摸位置相对于屏幕的坐标,getx是相对于按钮的坐标 wmparams.x = (int) event.getrawx() - mfloatview.getmeasuredwidth() / 2; // 减25为状态栏的高度 wmparams.y = (int) event.getrawy() - mfloatview.getmeasuredheight() / 2 - 75; // 刷新 mwindowmanager.updateviewlayout(mfloatlayout, wmparams); return true; case motionevent.action_up: mfloatview.setbackgroundresource(r.drawable.circle_cyan); return isclick;// 此处返回false则属于移动事件,返回true则释放事件,可以出发点击否。 default: break; } return false; } }); mfloatview.setonclicklistener(new onclicklistener() { @override public void onclick(view v) { toast.maketext(floatviewservice.this, "一百块都不给我!", toast.length_short).show(); } }); } @override public void ondestroy() { super.ondestroy(); if(mfloatlayout != null) { //移除悬浮窗口 mwindowmanager.removeview(mfloatlayout); } } @override public ibinder onbind(intent intent) { return null; } }
悬浮窗的xml文件
alert_window_menu.xml <?xml version="1.0" encoding="utf-8"?> <linearlayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="vertical" > <imagebutton android:id="@+id/alert_window_imagebtn" android:layout_width="50dp" android:layout_height="50dp" android:background="@drawable/float_window_menu" android:contentdescription="@null" /> </linearlayout>
以上内容是实现android 全界面悬浮按钮的全部叙述,希望大家喜欢。