Android贴吧系统学习-----悬浮布局的做法

<span style="font-size:18px;"><strong>//悬浮窗口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 boolean isFloatAttached = false;private int tabPosition = 0;@Overrideprotected void onResume() {// TODO Auto-generated method stubsuper.onResume();if(tabPosition == 2 && isFloatAttached == false)createFloatView();}@Overrideprotected void onStop() {// TODO Auto-generated method stubsuper.onStop();if(null != mFloatLayout && isFloatAttached == true){mWindowManager.removeView(mFloatLayout);isFloatAttached = false;}}@Overrideprotected void onSaveInstanceState(Bundle outState) {// TODO Auto-generated method stubsuper.onSaveInstanceState(outState);outState.putInt("position", tabPosition);outState.putBoolean("is_attached", isFloatAttached);}@Overrideprotected void onRestoreInstanceState(Bundle savedInstanceState) {// TODO Auto-generated method stubsuper.onRestoreInstanceState(savedInstanceState);tabPosition = savedInstanceState.getInt("position");isFloatAttached = savedInstanceState.getBoolean("is_attached");}switch (checkedIndex) {case 0:////////////tabPosition = 0;    if(null != mFloatLayout && isFloatAttached == true)    {    mWindowManager.removeView(mFloatLayout);    isFloatAttached = false;    }/////////////////fragment = fragments.get(0);//对应编号为0的fragmenttransaction.replace(R.id.main_framelayout, fragment);transaction.commit();title.setText("菜单1");break;case 1:tabPosition = 1;    if(null != mFloatLayout && isFloatAttached == true)    {    mWindowManager.removeView(mFloatLayout);    isFloatAttached = false;    }fragment = fragments.get(1);////对应编号为1的fragmenttransaction.replace(R.id.main_framelayout, fragment);transaction.commit();title.setText("菜单2");break;case 2:tabPosition = 2;    if(isFloatAttached == false)    createFloatView();//这里放置的是发布break;case 3:tabPosition = 3;    if(null != mFloatLayout && isFloatAttached == true)    {    mWindowManager.removeView(mFloatLayout);    isFloatAttached = false;    }fragment = fragments.get(2);//对应编号为2的fragmenttransaction.replace(R.id.main_framelayout, fragment);transaction.commit();title.setText("菜单4");break;case 4:tabPosition = 4;    if(null != mFloatLayout && isFloatAttached == true)    {    mWindowManager.removeView(mFloatLayout);    isFloatAttached = false;    }fragment = fragments.get(3);//对应编号为3的fragmenttransaction.replace(R.id.main_framelayout, fragment);transaction.commit();title.setText("菜单5");break;default:break;}//添加浮动窗口 private void createFloatView()      {          wmParams = new WindowManager.LayoutParams();          //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.RIGHT| Gravity.BOTTOM;                 // 以屏幕左上角为原点，设置x、y初始值，相对于gravity          wmParams.x = Dp2Px(getApplicationContext(), 20);          wmParams.y = Dp2Px(getApplicationContext(), 80);            //设置悬浮窗口长宽数据            wmParams.width = WindowManager.LayoutParams.WRAP_CONTENT;          wmParams.height = WindowManager.LayoutParams.WRAP_CONTENT;                     /*// 设置悬浮窗口长宽数据         wmParams.width = 200;         wmParams.height = 80;*/                  LayoutInflater inflater = LayoutInflater.from(getApplication());          //获取浮动窗口视图所在布局          mFloatLayout = (LinearLayout) inflater.inflate(R.layout.tieba_add_float, null);                 //添加mFloatLayout          mWindowManager.addView(mFloatLayout, wmParams);        isFloatAttached = true;        //浮动窗口按钮                    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          ImageView addImg = (ImageView)mFloatLayout.findViewById(R.id.add_float);        addImg.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stubstartActivity(new Intent(NewStartActivity.this,WritePostActivity.class));}});    } </strong></span>

在上面我的菜单用的是   radioGruop控件，只需要在自己需要的界面中把悬浮布局弄出来就行，

另外在onstop 和onresume生命周期里面也需要控制下，