Android開發(fā)仿QQ空間根據(jù)位置彈出PopupWindow顯示更多操作效果

更新時間：2016年12月09日 09:04:46 作者：海豚灣

我們打開QQ空間的時候有個箭頭按鈕點擊之后彈出PopupWindow會根據(jù)位置的變化顯示在箭頭的上方還是下方，比普通的PopupWindow彈在屏幕中間顯示好看的多，今天就給大家分享下實現(xiàn)代碼，需要的朋友參考下吧

我們打開QQ空間的時候有個箭頭按鈕點擊之后彈出PopupWindow會根據(jù)位置的變化顯示在箭頭的上方還是下方，比普通的PopupWindow彈在屏幕中間顯示好看的多。

先看QQ空間效果圖：

這個要實現(xiàn)這個效果可以分幾步進行

1.第一步自定義PopupWindow，實現(xiàn)如圖的樣式，這個繼承PopupWindow自定義布局很容易實現(xiàn)

2.得到點擊按鈕的位置，根據(jù)位置是否在屏幕的中間的上方還是下方，將PopupWindow顯示在控件的上方或者下方

3.適配問題，因為PopupWindow上面的操作列表是動態(tài)的所以要自定義listView

4.動畫效果+背景變暗

通過步驟分析，我們就很清晰的了解我們要做什么，話不多說，從第一步開始吧

下面自定義PopupWindow實現(xiàn)效果

1.重寫listView，重新計算高度（一般也應用于解決ScrollView嵌套listView只顯示一行的問題）

public class MyListView extends ListView {
  public MyListView(Context context, AttributeSet attrs) {
    super(context, attrs);
  }
  public MyListView(Context context) {
    super(context);
  }
  public MyListView(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
  }
  @Override
  public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
    super.onMeasure(widthMeasureSpec, MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2,
        MeasureSpec.AT_MOST));
  }
}

2.自定義PopupWindow的布局文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:orientation="vertical"
  android:gravity="right">
  <ImageView
    android:id="@+id/arrow_up"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginRight="28dp"
    android:src="@drawable/arrow_up_white"
    android:visibility="visible"/>
  <com.widget.MyListView
    android:id="@+id/lv_list"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:padding="@dimen/normal_margin8"
    android:layout_marginTop="-1dp"
    android:layout_marginBottom="-1dp"
    android:dividerHeight="0dp"
    android:layout_marginLeft="@dimen/normal_margin8"
    android:layout_marginRight="@dimen/normal_margin8"
    android:scrollbars="none"
    android:background="@drawable/custom_white"
    android:divider="@null"></com.widget.MyListView>
  <ImageView
    android:id="@+id/arrow_down"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginRight="28dp"
    android:src="@drawable/arrow_down_white"
    android:visibility="visible"/>
</LinearLayout>

2.PopupWindow彈出動畫以及消失動畫

popshow_operation_anim_down.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
  <scale android:interpolator="@android:anim/accelerate_decelerate_interpolator"
    android:fromXScale="0.0"
    android:toXScale="1.0"
    android:fromYScale="0.0"
    android:toYScale="1.0"
    android:pivotX="90%"
    android:pivotY="0%"
    android:fillAfter="false"
    android:duration="300" >
  </scale>
</set>

popshow_operation_anim_up.xml

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
  <scale android:interpolator="@android:anim/accelerate_decelerate_interpolator"
    android:fromXScale="0.0"
    android:toXScale="1.0"
    android:fromYScale="0.0"
    android:toYScale="1.0"
    android:pivotX="90%"
    android:pivotY="100%"
    android:fillAfter="false"
    android:duration="250" >
  </scale>
</set>

消失動畫是漸隱動畫可以自己定義，同理。

3.重寫PopupWindow了

public class CustomOperationPopWindow extends PopupWindow {
  private Context context;
  private View conentView;
  private View backgroundView;
  private Animation anim_backgroundView;
  private MyListView listView;
  private TypeSelectPopuAdapter selectAdapter;
  ImageView arrow_up, arrow_down;
  List<TypeSelect> typeSelectlist = new ArrayList<>();
  int[] location = new int[2];
  private OnItemListener onItemListener;
  private AdapterView.OnItemClickListener onItemClickListener;
  public interface OnItemListener {
    public void OnItemListener(int position, TypeSelect typeSelect);
  }
  ;
  public void setOnItemMyListener(OnItemListener onItemListener) {
    this.onItemListener = onItemListener;
  }
  public CustomOperationPopWindow(Context context) {
    this.context = context;
    initView();
  }
  public CustomOperationPopWindow(Context context, List<TypeSelect> typeSelectlist) {
    this.context = context;
    this.typeSelectlist = typeSelectlist;
    initView();
  }
  private void initView() {
    this.anim_backgroundView = AnimationUtils.loadAnimation(context, R.anim.alpha_show_anim);
    LayoutInflater inflater = (LayoutInflater) context
        .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    this.conentView = inflater.inflate(R.layout.view_operation_popupwindow, null);
    // 設置SelectPicPopupWindow的View
    this.setContentView(conentView);
    // 設置SelectPicPopupWindow彈出窗體的寬
    this.setWidth(LayoutParams.MATCH_PARENT);
    // 設置SelectPicPopupWindow彈出窗體的高
    this.setHeight(LayoutParams.WRAP_CONTENT);
    // 設置SelectPicPopupWindow彈出窗體可點擊
    this.setFocusable(true);
    this.setOutsideTouchable(true);
    // 刷新狀態(tài)
    this.update();
    // 實例化一個ColorDrawable顏色為半透明
    ColorDrawable dw = new ColorDrawable(0000000000);
    // 點back鍵和其他地方使其消失,設置了這個才能觸發(fā)OnDismisslistener ，設置其他控件變化等操作
    this.setBackgroundDrawable(dw);
    // 設置SelectPicPopupWindow彈出窗體動畫效果
    this.setAnimationStyle(R.style.operation_popwindow_anim_style_up);
    this.listView = (MyListView) conentView.findViewById(R.id.lv_list);
    this.arrow_up = (ImageView) conentView.findViewById(R.id.arrow_up);
    this.arrow_down = (ImageView) conentView.findViewById(R.id.arrow_down);
    //設置適配器
    this.selectAdapter = new TypeSelectPopuAdapter(context, typeSelectlist,
        R.layout.item_operation_popu);
    this.listView.setAdapter(selectAdapter);
    this.listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
      @Override
      public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        if (isShowing()) {
          dismiss();
        }
        onItemListener.OnItemListener(position, typeSelectlist.get(position));
      }
    });
    this.setOnDismissListener(new OnDismissListener() {
      @Override
      public void onDismiss() {
        if (backgroundView != null) {
          backgroundView.setVisibility(View.GONE);
        }
      }
    });
  }
  //設置數(shù)據(jù)
  public void setDataSource(List<TypeSelect> typeSelectlist) {
    this.typeSelectlist = typeSelectlist;
    this.selectAdapter.notifyDataSetChanged();
  }
  /**
   * 沒有半透明背景 顯示popupWindow
   *
   * @param
   */
  public void showPopupWindow(View v) {
    v.getLocationOnScreen(location); //獲取控件的位置坐標
    //獲取自身的長寬高
    conentView.measure(View.MeasureSpec.UNSPECIFIED, View.MeasureSpec.UNSPECIFIED);
    if (location[1] > MainApplication.SCREEN_H / 2 + 100) { //MainApplication.SCREEN_H 為屏幕的高度，方法可以自己寫
      this.setAnimationStyle(R.style.operation_popwindow_anim_style_up);
      arrow_up.setVisibility(View.GONE);
      arrow_down.setVisibility(View.VISIBLE);
      this.showAtLocation(v, Gravity.NO_GRAVITY, (location[0]), location[1] - conentView.getMeasuredHeight());
    } else {
      this.setAnimationStyle(R.style.operation_popwindow_anim_style_down);
      arrow_up.setVisibility(View.VISIBLE);
      arrow_down.setVisibility(View.GONE);
      this.showAsDropDown(v, 0, 0);
    }
  }
  /**
   * 攜帶半透明背景 顯示popupWindow
   *
   * @param
   */
  public void showPopupWindow(View v, View backgroundView) {
    this.backgroundView = backgroundView;
    v.getLocationOnScreen(location); //獲取控件的位置坐標
    //獲取自身的長寬高
    conentView.measure(View.MeasureSpec.UNSPECIFIED, View.MeasureSpec.UNSPECIFIED);
    backgroundView.setVisibility(View.VISIBLE);
    //對view執(zhí)行動畫
    backgroundView.startAnimation(anim_backgroundView);
    if (location[1] > MainApplication.SCREEN_H / 2 + 100) { //若是控件的y軸位置大于屏幕高度的一半，向上彈出
      this.setAnimationStyle(R.style.operation_popwindow_anim_style_up);
      arrow_up.setVisibility(View.GONE);
      arrow_down.setVisibility(View.VISIBLE);
      this.showAtLocation(v, Gravity.NO_GRAVITY, (location[0]), location[1] - conentView.getMeasuredHeight()); //顯示指定控件的上方
    } else {
      this.setAnimationStyle(R.style.operation_popwindow_anim_style_down); //反之向下彈出
      arrow_up.setVisibility(View.VISIBLE);
      arrow_down.setVisibility(View.GONE);
      this.showAsDropDown(v, 0, 0);  //顯示指定控件的下方
    }
  }
  /**
   * 顯示popupWindow 根據(jù)特殊要求高度顯示位置 
   *
   * @param
   */
  public void showPopupWindow(View v, View backgroundView,int hight) {
    this.backgroundView = backgroundView;
    v.getLocationOnScreen(location);
    //獲取自身的長寬高
    conentView.measure(View.MeasureSpec.UNSPECIFIED, View.MeasureSpec.UNSPECIFIED);
    backgroundView.setVisibility(View.VISIBLE);
    //對view執(zhí)行動畫
    backgroundView.startAnimation(anim_backgroundView);
    if (location[1] > MainApplication.SCREEN_H / 2 + 100) {
      this.setAnimationStyle(R.style.operation_popwindow_anim_style_up);
      arrow_up.setVisibility(View.GONE);
      arrow_down.setVisibility(View.VISIBLE);
      this.showAtLocation(v, Gravity.NO_GRAVITY, (location[0]), location[1] - conentView.getMeasuredHeight()-hight);
    } else {
      this.setAnimationStyle(R.style.operation_popwindow_anim_style_down);
      arrow_up.setVisibility(View.VISIBLE);
      arrow_down.setVisibility(View.GONE);
      this.showAsDropDown(v, 0, 0);
    }
  }
}

4.代碼中的用法

1.

CustomOperationPopWindow customOperationPopWindow = new CustomOperationPopWindow(this, operationTypeSelectlist);
customOperationPopWindow.setOnItemMyListener(new CustomOperationPopWindow.OnItemListener() {
  @Override
  public void OnItemListener(int position, TypeSelect typeSelect) {
    //此處實現(xiàn)列表點擊所要進行的操作
  }
});

2.

textView.setOnClickListener(new View.OnClickListener() {
  @Override
  public void onClick(View v) {
customOperationPopWindow.showPopupWindow(textView);//可以傳個半透明view v_background過去根據(jù)業(yè)務需要顯示隱藏
  }
});

5.最終實際效果