乾貨一:通過自定義PopupWindow實現QQ選單選項功能
阿新 • • 發佈:2019-02-06
概述
我們在使用手機QQ時,點選選單鍵,會彈出如本案例說演示的效果圖似的選單選項。
實現方式有很多種,在這裡我們來演示下如何通過自定義PopupWindow的方式一步一步的實現如上效果。
關於PopupWindow的基本知識點請檢視 PopupWindow
分析
UI部分
- shape的使用-corners solid等
- 中間的使用View分割
- 背景的處理
- ……
功能點
- 響應點選事件–通過介面回撥的方式
- 點選外部,PopupWindow可消失
- ……
實現
自定義PopupWindow
UI編寫
- 位於父佈局的底部
- 距邊框有一定的距離,根佈局使用layout_margin即可
ListView(四個圓角+白色背景) + View分割(透明色) +底部文字(圓角+白色背景)
藍色字型 居中顯示(ListView中的 在Item設定即可,底部文字設定gravity即可)
- …….
佈局檔案如下所示:
list_popupwindow.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/id_rl_relativeLayout"
android:layout_width ="match_parent"
android:layout_height="match_parent"
android:layout_margin="16dp"
android:padding="16dp">
<ListView
android:id="@+id/id_lv_popupWindowListView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_above ="@+id/view"
android:background="@drawable/bg_menu" />
<View
android:id="@+id/view"
android:layout_width="match_parent"
android:layout_height="20dp"
android:layout_above="@+id/id_tv_bottom"
android:background="@color/transparent" />
<TextView
android:id="@+id/id_tv_bottom"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_alignParentBottom="true"
android:background="@drawable/bg_menu"
android:gravity="center"
android:text="取消"
android:textColor="@color/skyblue"
android:textSize="20dp" />
</RelativeLayout>
其中用到的幾個背景xml如下,都在drawable目錄下
bg_menu.xml
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
android:shape="rectangle">
<!--stroke: 設定描邊,可描成實線或虛線。當然了也可以不設定stroke屬性-->
<stroke android:color="@color/transparent"
android:width="2dp"/>
<!--設定形狀填充的顏色,只有android:color一個屬性-->
<solid android:color="@color/bg_white" />
<!-- 設定圓角,只適用於rectangle型別,可分別設定四個角不同半徑的圓角,當設定的圓角半徑很大時,比如200dp,就可變成弧形邊了-->
<corners android:radius="10dp" />
</shape>
自定義PopupWindow編寫 +介面回撥+監聽OnTouch事件實現點選外部消失
載入自定義的xml檔案,然後獲取ListView元件,設定adapter 即可顯示UI佈局。程式碼中的註釋已經非常詳細了,再此就不多涉及了。
import android.content.Context;
import android.graphics.drawable.ColorDrawable;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.PopupWindow;
import android.widget.TextView;
import com.turing.base.R;
import com.turing.nutritiousSerial.listPopupWindow.adapter.CustomPopupWindowAdpater;
import com.turing.nutritiousSerial.listPopupWindow.beans.PopupItemBean;
import java.util.List;
/**
* MyApp
*
* @author Mr.Yang on 2016-04-25 10:12.
* @version 1.0
* @desc
*/
public class ListPopupWindow extends PopupWindow {
//上下文
private Context context;
//父檢視
private View parentView;
//item資料來源
private List<PopupItemBean> dataList;
//介面卡
private CustomPopupWindowAdpater adapter;
//宣告介面物件
private OnPopubItemClickListener popupItemListener;
private OnBottomTextViewClickListener bottomTextViewListener;
/**
* 定義介面用於PopupItem回撥點選事件處理
*/
public interface OnPopubItemClickListener {
void onPopupItemClick(View view, int postion);
}
/**
* 定義介面用於底部TextView回撥點選事件處理
*/
public interface OnBottomTextViewClickListener {
void onBottomClick();
}
/**
* 建構函式
*/
public ListPopupWindow(Context context,
List<PopupItemBean> dataList,
View parentView,
OnPopubItemClickListener popupItemListener,
OnBottomTextViewClickListener bottomTextViewListener) {
this.context = context;
this.dataList = dataList;
this.parentView = parentView;
this.popupItemListener = popupItemListener;
this.bottomTextViewListener = bottomTextViewListener;
initCustomPopupWindow();
}
/**
* 初始化自定義的PopupWindow
*/
private void initCustomPopupWindow() {
// 載入自定義佈局檔案,轉化為元件
parentView = LayoutInflater.from(context).inflate(R.layout.list_popupwindow, null);
// 設定顯示的view
setContentView(parentView);
// 初始化控制元件
ListView lv = (ListView) parentView.findViewById(R.id.id_lv_popupWindowListView);
TextView tv = (TextView) parentView.findViewById(R.id.id_tv_bottom);
// 設定彈出窗體的高
this.setWidth(ViewGroup.LayoutParams.MATCH_PARENT);
this.setHeight(ViewGroup.LayoutParams.MATCH_PARENT);
// 設定彈出窗體可點選
this.setFocusable(true);
// 設定SelectPicPopupWindow彈出窗體的背景
this.setBackgroundDrawable(new ColorDrawable(0xb0000000));
// view新增OnTouchListener監聽判斷獲取觸屏位置如果在佈局外面則銷燬彈出框
parentView.setOnTouchListener(new View.OnTouchListener() {
@Override
public boolean onTouch(View v, MotionEvent event) {
// getTop View自身的頂邊到其父佈局頂邊的距離,因為是根目錄所以為0
int height = parentView.findViewById(R.id.id_rl_relativeLayout).getTop();
// getY 點選事件距離控制元件頂邊的舉例
int y = (int) event.getY();
// 當擡起 並且 y>height時(也就是 只要不點選ListView範圍內),dismiss popupWindow
if (event.getAction() == MotionEvent.ACTION_UP) {
if (y > height) {
dismiss();
}
}
return true;
}
});
// 更新位置和大小(不加這行程式碼也行)
update();
// 例項化介面卡
adapter = new CustomPopupWindowAdpater(context, dataList);
// 設定介面卡
lv.setAdapter(adapter);
// ListView設定點選事件
lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
// 回撥onPopupItemClick
popupItemListener.onPopupItemClick(view, position);
}
});
// TextView設定點選事件
tv.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// 回撥onBottomClick
bottomTextViewListener.onBottomClick();
}
});
}
}
CustomPopupWindowAdpater.java
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.TextView;
import com.turing.base.R;
import com.turing.nutritiousSerial.listPopupWindow.beans.PopupItemBean;
import java.util.List;
/**
* MyApp
*
* @author Mr.Yang on 2016-04-25 11:04.
* @version 1.0
* @desc
*/
public class CustomPopupWindowAdpater extends BaseAdapter {
private Context context;
private List<PopupItemBean> datas;
private LayoutInflater layoutInflater;
/**
* 建構函式
*/
public CustomPopupWindowAdpater(Context context, List<PopupItemBean> datas) {
this.context = context;
this.datas = datas ;
layoutInflater = LayoutInflater.from(context);
}
@Override
public int getCount() {
return datas.size();
}
@Override
public Object getItem(int position) {
return datas.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
// 宣告ViewHolder
ViewHolder viewHolder;
if (convertView == null) {
// 載入Item佈局,轉換為View佈局
convertView = layoutInflater.inflate(R.layout.popup_item, parent, false);
// 例項化ViewHolder
viewHolder = new ViewHolder();
// 查詢元件賦值給ViewHolder
viewHolder.textView = (TextView) convertView.findViewById(R.id.id_tv_popupItemText);
// 設定TAG
convertView.setTag(viewHolder);
} else {
viewHolder = (ViewHolder) convertView.getTag();
}
// 設定Item中的值
viewHolder.textView.setText(datas.get(position).getText() );
return convertView;
}
/**
* 對應Item佈局中的元件
*/
class ViewHolder {
private TextView textView;
}
}
呼叫
因為PopupWindow需要依賴父元件來顯示,所以例項話PopupWindow的時候,傳入根佈局View,實現介面回撥Activity類實現自定義的兩個介面,並傳入到PopupWindow中。
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.Gravity;
import android.view.View;
import android.widget.RelativeLayout;
import com.turing.base.R;
import com.turing.base.utils.AlertUtil;
import com.turing.nutritiousSerial.listPopupWindow.beans.PopupItemBean;
import com.turing.nutritiousSerial.listPopupWindow.customPopupWindow.ListPopupWindow;
import java.util.ArrayList;
import java.util.List;
public class ListPopupWindowDemoActivity extends AppCompatActivity implements ListPopupWindow.OnPopubItemClickListener, ListPopupWindow.OnBottomTextViewClickListener {
// 定義父View即PopupWindow依賴浮動的View
private RelativeLayout relativeLayout;
private ListPopupWindow popWindow;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_list_popup_window_demo);
// 父View
relativeLayout = (RelativeLayout) findViewById(R.id.id_rl_relativeLayout);
}
/**
* 按鈕監聽事件
*
* @param view
*/
public void showCustomListPopupWindow(View view) {
// 展示資料集合
List<PopupItemBean> datalists = new ArrayList<>();
// List集合中的資料
PopupItemBean itemBean1 = new PopupItemBean("版本更新");
PopupItemBean itemBean2 = new PopupItemBean("反饋");
PopupItemBean itemBean3 = new PopupItemBean("退出QQ");
// 新增到List集合中
datalists.add(itemBean1);
datalists.add(itemBean2);
datalists.add(itemBean3);
// 例項化自定義ListPopupWindow
popWindow = new ListPopupWindow(ListPopupWindowDemoActivity.this,
datalists, relativeLayout, this, this);
// 居中並且靠底部顯示
popWindow.showAtLocation(relativeLayout, Gravity.CENTER | Gravity.BOTTOM, 0, 0);
}
@Override
public void onBottomClick() {
popWindow.dismiss();
AlertUtil.showToastShort(ListPopupWindowDemoActivity.this, "點選取消");
}
@Override
public void onPopupItemClick(View view, int postion) {
switch (postion) {
case 0:
AlertUtil.showToastShort(ListPopupWindowDemoActivity.this, String.valueOf(postion) + " 被點選");
break;
case 1:
AlertUtil.showToastShort(ListPopupWindowDemoActivity.this, String.valueOf(postion) + " 被點選");
break;
case 2:
AlertUtil.showToastShort(ListPopupWindowDemoActivity.this, String.valueOf(postion) + " 被點選");
break;
default:
break;
}
}
}