PopupWindow

效果图

Demo

• Project：CombinedChartDemo
• File：MyPopupWindow.java

初始化

// 获取弹出的PopupWindow的界面
View mContentView = View.inflate(context, R.layout.popupwindow, null);
// 创建一个PopupWindow并默认获取焦点（如果没有焦点view无法监听到点击事件）
PopupWindow mPopupWindow = new PopupWindow(mContentView, WindowManager.LayoutParams.WRAP_CONTENT, WindowManager.LayoutParams.WRAP_CONTENT, true);
// ***给PopupWindow设置背景
mPopupWindow.setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));

mPopupWindow.update();

显示

/**
 * 显示PopupWindow
 *
 * @param parent 父控件
 */
public void showPopupWindow(View parent) {
    // 获取父控件在窗体中的位置
    int[] location = new int[2];
    parent.getLocationInWindow(location);
    // 将PopupWindow显示在指定位置上
    mPopupWindow.showAtLocation(parent, Gravity.TOP | Gravity.START, location[0], location[1] + parent.getHeight());
}

隐藏

代码控制关闭

/**
 * 关闭PopupWindow
 */
public void dismiss() {
    if (null != mPopupWindow && mPopupWindow.isShowing()) {
        mPopupWindow.dismiss();
    }
}

点击PopupWindow以外任意位置关闭

// 设置PopupWindow之外的其他位置消失
mPopupWindow.setOutsideTouchable(true);

返回按钮控制关闭

// 监听点击返回键
mContentView.setOnKeyListener(new View.OnKeyListener() {
    @Override
    public boolean onKey(View v, int keyCode, KeyEvent event) {
        switch (keyCode) {
            case KeyEvent.KEYCODE_BACK:
                // 按返回键关闭PopupWindow
                dismiss();
                return true;
            default:
                return false;
        }
    }
});

开关

/**
 * 开关
 * @param parent 父控件
 */
public void toggle(View parent) {
    if (mPopupWindow.isShowing()) {
        dismiss();
    } else {
        showPopupWindow(parent);
    }
}

封装

package kong.qingwei.combinedchartdemo.view;

import android.content.Context;
import android.view.Gravity;
import android.view.KeyEvent;
import android.view.View;
import android.view.WindowManager;
import android.widget.PopupWindow;

import kong.qingwei.combinedchartdemo.R;

/**
 * Created by kqw on 2016/5/17.
 * MyPopupWindow
 */
public class MyPopupWindow extends PopupWindow implements View.OnKeyListener {

    private PopupWindow mPopupWindow;
    private final View mContentView;

    public MyPopupWindow(Context context) {
        // 获取弹出的PopupWindow的界面
        mContentView = View.inflate(context, R.layout.popupwindow, null);
        // 监听点击返回键
        mContentView.setOnKeyListener(this);
        // 创建一个PopupWindow并默认获取焦点（如果没有焦点view无法监听到点击事件）
        mPopupWindow = new PopupWindow(mContentView, WindowManager.LayoutParams.WRAP_CONTENT, WindowManager.LayoutParams.WRAP_CONTENT, true);
        // 设置PopupWindow之外的其他位置消失
        mPopupWindow.setOutsideTouchable(true);
    }



    /**
     * 显示PopupWindow
     *
     * @param parent 父控件
     */
    public void showPopupWindow(View parent) {
        // 获取父控件在窗体中的位置
        int[] location = new int[2];
        parent.getLocationInWindow(location);
        // 将PopupWindow显示在指定位置上
        mPopupWindow.showAtLocation(parent, Gravity.TOP | Gravity.START, location[0], location[1] + parent.getHeight());
    }

    /**
     * 关闭PopupWindow
     */
    public void dismiss() {
        if (null != mPopupWindow && mPopupWindow.isShowing()) {
            mPopupWindow.dismiss();
        }
    }

    /**
     * 开关
     * @param parent 父控件
     */
    public void toggle(View parent) {
        if (mPopupWindow.isShowing()) {
            dismiss();
        } else {
            showPopupWindow(parent);
        }
    }

    @Override
    public boolean onKey(View v, int keyCode, KeyEvent event) {
        switch (keyCode) {
            case KeyEvent.KEYCODE_BACK:
                // 按返回键关闭PopupWindow
                dismiss();
                return true;
            default:
                return false;
        }
    }

}

使用

// PopupWindow
MyPopupWindow myPopupWindow = new MyPopupWindow(context);

// 显示 
myPopupWindow.showPopupWindow(parentView);

// 开关
myPopupWindow.toggle(parentView);