控件PopupWindow

Posted 2021-07-17 一只小阿大嗷

目录

• 常用方法
• 代码
• 效果图

常用方法

1.setContentView(View contentView) 设置PopupWindow显示view
2.showAsDropDown(View anchor) 相对某个控件的位置(正左下方)，无偏移
3.showAsDropDown(View anchor,int xoff,int yoff) 相对某个控件的位置，有偏移
4.setFocusable(boolean focusable) 设置是否获取焦点
5.setBackgroundDrawable(Drawable background) 设置背景
6.dismiss() 关闭弹窗
7.setAnimationStyle(int animationStyle) 设置加载动画
8.setTouchable(boolean touchable) 设置触摸使能
9.setOutsideTouchable(boolean touchable) 设置PopupWindow外面的触摸使能

注意
public PopupWindow(View contentView, int width, int height, boolean focusable)

PopupWindow方法最后一个参数focusable和setFocusable用处是一样的。作用都是点击PopupWindow外的时候，收缩弹窗

代码

MainActivity.java

package com.example.popupwindow;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.PopupWindow;

public class MainActivity extends AppCompatActivity {

    private static final String TAG = "Finny";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    public void FinnyClick(View view) {
        View popupView = getLayoutInflater().inflate(R.layout.popup_view, null);

        Button btn1 = popupView.findViewById(R.id.btn_1);
        Button btn2 = popupView.findViewById(R.id.btn_2);

        PopupWindow popupWindow = new PopupWindow(popupView, ViewGroup.LayoutParams.WRAP_CONTENT,
                ViewGroup.LayoutParams.WRAP_CONTENT,true);

        popupWindow.setBackgroundDrawable(getResources().getDrawable(R.drawable.tp));

        popupWindow.showAsDropDown(view,view.getWidth(),-view.getHeight());

        btn1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Log.e(TAG, "onClick: 住在上海" );
                popupWindow.dismiss();
            }
        });

        btn2.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Log.e(TAG, "onClick: 住在北京" );
                popupWindow.dismiss();
            }
        });
    }
}

activity_main.xml

<?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">

    <Button
        android:text="弹出可选城市"
        android:onClick="FinnyClick"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>

</LinearLayout>

popup_view.xml

<?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:background="@mipmap/ic_launcher">

    <Button
        android:id="@+id/btn_1"
        android:text="上海"
        android:padding="5dp"
        android:textSize="18dp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>

    <Button
        android:id="@+id/btn_2"
        android:text="北京"
        android:padding="5dp"
        android:textSize="18dp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"/>

</LinearLayout>

效果图

点击了上海和北京后会loge输出
每点一个按钮，都会dismiss()
点击弹窗外的，会自动收缩