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最新推荐文章于 2022-07-22 23:21:10 发布

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最新推荐文章于 2022-07-22 23:21:10 发布

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本文链接：https://blog.youkuaiyun.com/u011164565/article/details/51594715

本文介绍如何在Android应用中使用PopupWindow组件，并提供了一个具体的实现案例。通过LayoutInflater加载布局资源，设置PopupWindow的显示位置及点击关闭等功能。

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package com.example.a11.myapplication;

import android.content.Context;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.ColorDrawable;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.PopupWindow;

public class MainActivity extends AppCompatActivity {
    private Button but1, but2, but3;


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

    private void initOncu() {
        but1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                LayoutInflater inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
                View view = inflater.inflate(R.layout.layout, null);
                LinearLayout layout= (LinearLayout) view.findViewById(R.id.lien);
                final PopupWindow window = new PopupWindow(view,
                        WindowManager.LayoutParams.MATCH_PARENT,
                        WindowManager.LayoutParams.MATCH_PARENT);
                window.setFocusable(true);
                ColorDrawable dw = new ColorDrawable(0xb0000000);
                window.setBackgroundDrawable(dw);

                window.showAsDropDown(v);
            layout.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    if (window.isShowing()){
                        window.dismiss();
                    }
                }
            });
            }
        });
    }

    private void initView() {
        but1 = (Button) findViewById(R.id.but1);
        but2 = (Button) findViewById(R.id.but2);
        but3 = (Button) findViewById(R.id.but3);

    }


}