popupwindow的学习

来源：互联网发布：mpp文件打开软件编辑：程序博客网时间：2024/05/23 13:02

源地址：http://blog.csdn.net/xyz_lmn/article/details/6906286

自定义的一个弹窗，学习学习。

MainActivity.java:

package com.example.li.popupwindow;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.Gravity;import android.view.View;import android.view.ViewGroup;import android.widget.Button;import android.widget.PopupWindow;public class MainActivity extends AppCompatActivity implements View.OnClickListener{    View view;    PopupWindow pop;    Button btnShowAsDrawDown;    Button btnShowAsDrawDown1;    Button btnShowAtLocation;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.popup_activity);        btnShowAsDrawDown = (Button) findViewById(R.id.btnShowAsDrawDown);        btnShowAsDrawDown.setOnClickListener(this);        btnShowAsDrawDown1 = (Button) findViewById(R.id.btnShowAsDrawDown1);        btnShowAsDrawDown1.setOnClickListener(this);        btnShowAtLocation = (Button) findViewById(R.id.btnShowAt);        btnShowAtLocation.setOnClickListener(this);        initPopupWindow();    }    private void initPopupWindow() {        view = this.getLayoutInflater().inflate(R.layout.popup_window, null);        pop = new PopupWindow(view, ViewGroup.LayoutParams.MATCH_PARENT,                ViewGroup.LayoutParams.WRAP_CONTENT                );        pop.setOutsideTouchable(true);        Button btnpop = (Button) view.findViewById(R.id.btn_pop);        btnpop.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                pop.dismiss();            }        });    }    @Override    public void onClick(View v) {        switch (v.getId()){            case R.id.btnShowAsDrawDown:                if(pop.isShowing()){                    pop.dismiss();                }else{                    pop.showAsDropDown(v);                }                break;            case R.id.btnShowAsDrawDown1:                if(pop.isShowing()){                    pop.dismiss();                }else{                    pop.showAsDropDown(v, 0, -160);                }                break;            default:                if(pop.isShowing()){                    pop.dismiss();                }else{                    pop.showAtLocation(findViewById(R.id.main),                            Gravity.CENTER_HORIZONTAL, 0, 0                            );                }                break;        }    }}

popup_activity.xml:

<?xml version="1.0" encoding="utf-8"?><LinearLayout    xmlns:android="http://schemas.android.com/apk/res/android"    android:id="@+id/main"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical">    <TextView        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="pop demo!"        />    <Button        android:id="@+id/btnShowAsDrawDown"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="Show as drawndown(one parameter)" />    <Button        android:id="@+id/btnShowAsDrawDown1"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="Show as drawndown(three parameters)" />    <Button        android:id="@+id/btnShowAt"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:text="Show At Location" /></LinearLayout>

popup_window.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="horizontal"    android:background="#a00ddddd"    android:gravity="center"    >    <Button        android:id="@+id/btn_pop"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_margin="10dip"        android:text="Close"        />    <ProgressBar        android:layout_width="wrap_content"        android:layout_height="wrap_content"        /></LinearLayout>

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