模仿qq视频通话的悬浮按钮的实例代码，如下所示；
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public class floatingwindowservice extends service{
private static final string tag="ontouchlistener";
private static view mview = null;
private static windowmanager mwindowmanager = null;
private static context mcontext = null;
public static boolean isshown = false;
public windowmanager.layoutparams params = null;
private int pixel;
private int theoffset;
@override
public void oncreate() {
super.oncreate();
}
@override
public int onstartcommand(intent intent, int flags, int startid) {
pixel = intent.getintextra("pixel",1);
showpopupwindow(this);
return super.onstartcommand(intent, flags, startid);
}
/**
* 显示弹出框
*
* @param context
*
*/
private void showpopupwindow(final context context) {
if (isshown) {
return;
}
isshown = true;
// 获取应用的context
mcontext = context.getapplicationcontext();
// 获取windowmanager
mwindowmanager = (windowmanager) mcontext.getsystemservice(context.window_service);
params = new windowmanager.layoutparams();
mview = setupview(context);
// 类型
params.type = windowmanager.layoutparams.type_system_alert;
int flags=windowmanager.layoutparams.flag_not_focusable;
params.flags = flags;
params.format = pixelformat.translucent;
params.width = windowmanager.layoutparams.wrap_content;
params.height = windowmanager.layoutparams.wrap_content;
params.gravity = gravity.center;
mwindowmanager.addview(mview, params);
}
/**
* 隐藏弹出框
*/
private static void hidepopupwindow() {
if (isshown && null != mview) {
mwindowmanager.removeview(mview);
isshown = false;
}
}
private int x=0;
private int y=0;
private int startx=0;
private int starty=0;
private view setupview(final context context) {
view view = layoutinflater.from(context).inflate(r.layout.popupwindow,
null);
textview tv= (textview) view.findviewbyid(r.id.title);
int w = view.measurespec.makemeasurespec(0,view.measurespec.unspecified);
int h = view.measurespec.makemeasurespec(0,view.measurespec.unspecified);
tv.measure(w, h);
theoffset=(pixel-tv.getmeasuredwidth())/2-50;
tv.setonclicklistener(new view.onclicklistener() {
@override
public void onclick(view v) {
intent intent =new intent(context,mainactivity.class);
context.startactivity(intent);
// toast.maketext(context,"点击事件",toast.length_long).show();
}
});
tv.setontouchlistener(new view.ontouchlistener() {
@override
public boolean ontouch(view v, motionevent event) {
switch (event.getaction()){
case motionevent.action_move:
int newx= (int) (event.getrawx()-x);
int newy= (int) (event.getrawy()-y);
params.x=newx+startx;
params.y=newy+starty;
mwindowmanager.updateviewlayout(mview,params);
break;
case motionevent.action_down:
x= (int) event.getrawx();
y= (int) event.getrawy();
break;
case motionevent.action_up:
if(params.x>=0){
params.x=theoffset;
mwindowmanager.updateviewlayout(mview,params);
}
if(params.x<=-0){
params.x=-theoffset;
mwindowmanager.updateviewlayout(mview,params);
}
log.i(tag,params.x+"");
log.i(tag,params.y+"");
//判断 从按住到抬起时候的移动距离， 如果如果移动距离大于20 那么就拦截事件，否则就不拦截事件，主要是处理点击事件的冲突
if(math.abs(startx-params.x)>20 ||math.abs(starty-params.y)>20 ){
//记录上一次的偏移量
startx=params.x;
starty=params.y;
return true;
}else {
startx=params.x;
starty=params.y;
return false;
}
}
return false;
}
});
return view;
}
@nullable
@override
public ibinder onbind(intent intent) {
return null;
}
@override
public void ondestroy() {
super.ondestroy();
if (mview != null) {
isshown=false;
mwindowmanager.removeview(mview);
}
}
}
main
@override
protected void oncreate(bundle savedinstancestate) {
super.oncreate(savedinstancestate);
setcontentview(r.layout.activity_main);
findviewbyid(r.id.open).setonclicklistener(this);
findviewbyid(r.id.close).setonclicklistener(this);
}
-点击开启 关闭悬浮按钮
@override
public void onclick(view v) {
switch (v.getid()){
case r.id.open:
//判断是否拥有悬浮权限
//op 的值是 0 ~ 47，其中0代表粗略定位权限，1代表精确定位权限，24代表悬浮窗权限。（具体可以看看android源码在android.app下就有个appopsmanager类）
if(utils.checkop(this,24)==0) {
intent intent=new intent(mainactivity.this, floatingwindowservice.class);
intent.putextra("pixel",utils.pixel(this)[0]);
startservice(intent);
}else {
//引导用户进入悬浮权限设置界面
intent intent = new intent(settings.action_manage_overlay_permission,
uri.parse("package:" + getpackagename()));
startactivityforresult(intent, 200);
}
break;
case r.id.close:
stopservice(new intent(mainactivity.this,floatingwindowservice.class));
break;
}
}
判断权限 -获取屏幕的宽高
public class utils {
public static int checkop(context context, int op){
final int version = build.version.sdk_int;
if (version >= 19){
object object = context.getsystemservice("appops");
class c = object.getclass();
try {
class[] carg = new class[3];
carg[0] = int.class;
carg[1] = int.class;
carg[2] = string.class;
method lmethod = c.getdeclaredmethod("checkop", carg);
return (integer) lmethod.invoke(object, op, binder.getcallinguid(), context.getpackagename());
} catch(nosuchmethodexception e) {
e.printstacktrace();
} catch (illegalaccessexception e) {
e.printstacktrace();
} catch (illegalargumentexception e) {
e.printstacktrace();
} catch (invocationtargetexception e) {
e.printstacktrace();
}
}
return -1;
}
/**
* 获取屏幕的宽高
* @param context
* @return
*/
public static int[] pixel(activity context){
displaymetrics dm = new displaymetrics();
context.getwindowmanager().getdefaultdisplay().getmetrics(dm);
return new int[]{dm.widthpixels,dm.heightpixels};
}
}
--popupwindow填充布局文件
<linearlayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<linearlayout
android:id="@+id/popup_window"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@android:color/white"
android:orientation="vertical" >
<textview
android:background="@mipmap/ic_launcher"
android:id="@+id/title"
android:layout_width="50dp"
android:layout_height="50dp"/>
</linearlayout>
</linearlayout>
以上所述是小编给大家介绍的android开发模仿qq视频通话悬浮按钮(实例代码)，希望对大家有所帮助
如对本文有疑问， 点击进行留言回复！！
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