PopupController.java：
import android.app.Activity;
import android.content.Context;
import android.graphics.drawable.ColorDrawable;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.view.WindowManager;
import android.widget.PopupWindow;
class PopupController {
private int layoutResId;//布局id
private Context context;
private PopupWindow popupWindow;
View mPopupView;//弹窗布局View
private View mView;
private Window mWindow;
PopupController(Context context, PopupWindow popupWindow) {
this.context = context;
this.popupWindow = popupWindow;
}
public void setView(int layoutResId) {
mView = null;
this.layoutResId = layoutResId;
installContent();
}
public void setView(View view) {
mView = view;
this.layoutResId = 0;
installContent();
}
private void installContent() {
if (layoutResId != 0) {
mPopupView = LayoutInflater.from(context).inflate(layoutResId, null);
} else if (mView != null) {
mPopupView = mView;
}
popupWindow.setContentView(mPopupView);
}
/**
* 设置宽度
*
* @param width 宽
* @param height 高
*/
private void setWidthAndHeight(int width, int height) {
if (width == 0 || height == 0) {
//如果没设置宽高，默认是WRAP_CONTENT
popupWindow.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT);
popupWindow.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT);
} else {
popupWindow.setWidth(width);
popupWindow.setHeight(height);
}
}
/**
* 设置背景灰色程度
*
* @param level 0.0f-1.0f
*/
void setBackGroundLevel(float level) {
mWindow = ((Activity) context).getWindow();
WindowManager.LayoutParams params = mWindow.getAttributes();
params.alpha = level;
mWindow.setAttributes(params);
}
/**
* 设置动画
*/
private void setAnimationStyle(int animationStyle) {
popupWindow.setAnimationStyle(animationStyle);
}
/**
* 设置Outside是否可点击
*
* @param touchable 是否可点击
*/
private void setOutsideTouchable(boolean touchable) {
popupWindow.setBackgroundDrawable(new ColorDrawable(0x00000000));//设置透明背景
popupWindow.setOutsideTouchable(touchable);//设置outside可点击
popupWindow.setFocusable(touchable);
}
static class PopupParams {
public int layoutResId;//布局id
public Context mContext;
public int mWidth, mHeight;//弹窗的宽和高
public boolean isShowBg, isShowAnim;
public float bg_level;//屏幕背景灰色程度
public int animationStyle;//动画Id
public View mView;
public boolean isTouchable = true;
public PopupParams(Context mContext) {
this.mContext = mContext;
}
public void apply(PopupController controller) {
if (mView != null) {
controller.setView(mView);
} else if (layoutResId != 0) {
controller.setView(layoutResId);
} else {
throw new IllegalArgumentException("PopupView's contentView is null");
}
controller.setWidthAndHeight(mWidth, mHeight);
controller.setOutsideTouchable(isTouchable);//设置outside可点击
if (isShowBg) {
//设置背景
controller.setBackGroundLevel(bg_level);
}
if (isShowAnim) {
controller.setAnimationStyle(animationStyle);
}
}
}
}
CommonPopupWindow.java：
package com.dingfang.org.popupwindowdemo;
import android.content.Context;
import android.view.View;
import android.widget.PopupWindow;
public class CommonPopupWindow extends PopupWindow {
final PopupController controller;
@Override
public int getWidth() {
return controller.mPopupView.getMeasuredWidth();
}
@Override
public int getHeight() {
return controller.mPopupView.getMeasuredHeight();
}
public interface ViewInterface {
void getChildView(View view, int layoutResId);
}
private CommonPopupWindow(Context context) {
controller = new PopupController(context, this);
}
@Override
public void dismiss() {
super.dismiss();
controller.setBackGroundLevel(1.0f);
}
public static class Builder {
private final PopupController.PopupParams params;
private ViewInterface listener;
public Builder(Context context) {
params = new PopupController.PopupParams(context);
}
/**
* @param layoutResId 设置PopupWindow 布局ID
* @return Builder
*/
public Builder setView(int layoutResId) {
params.mView = null;
params.layoutResId = layoutResId;
return this;
}
/**
* @param view 设置PopupWindow布局
* @return Builder
*/
public Builder setView(View view) {
params.mView = view;
params.layoutResId = 0;
return this;
}
/**
* 设置子View
*
* @param listener ViewInterface
* @return Builder
*/
public Builder setViewOnclickListener(ViewInterface listener) {
this.listener = listener;
return this;
}
/**
* 设置宽度和高度 如果不设置 默认是wrap_content
*
* @param width 宽
* @return Builder
*/
public Builder setWidthAndHeight(int width, int height) {
params.mWidth = width;
params.mHeight = height;
return this;
}
/**
* 设置背景灰色程度
*
* @param level 0.0f-1.0f
* @return Builder
*/
public Builder setBackGroundLevel(float level) {
params.isShowBg = true;
params.bg_level = level;
return this;
}
/**
* 是否可点击Outside消失
*
* @param touchable 是否可点击
* @return Builder
*/
public Builder setOutsideTouchable(boolean touchable) {
params.isTouchable = touchable;
return this;
}
/**
* 设置动画
*
* @return Builder
*/
public Builder setAnimationStyle(int animationStyle) {
params.isShowAnim = true;
params.animationStyle = animationStyle;
return this;
}
public CommonPopupWindow create() {
final CommonPopupWindow popupWindow = new CommonPopupWindow(params.mContext);
params.apply(popupWindow.controller);
if (listener != null && params.layoutResId != 0) {
listener.getChildView(popupWindow.controller.mPopupView, params.layoutResId);
}
CommonUtil.measureWidthAndHeight(popupWindow.controller.mPopupView);
return popupWindow;
}
}
}
CommonUtil.java：
import android.view.View;
public class CommonUtil {
/**
* 测量View的宽高
*
* @param view View
*/
public static void measureWidthAndHeight(View view) {
int widthMeasureSpec = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED);
int heightMeasureSpec = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED);
view.measure(widthMeasureSpec, heightMeasureSpec);
}
}
一般 用法：
public void onClicked(View view) {
CommonPopupWindow popupWindow = new CommonPopupWindow.Builder(this)
//设置PopupWindow布局
.setView(R.layout.popup_down)
//设置宽高
.setWidthAndHeight(200,200)
//设置动画
.setAnimationStyle(R.style.AnimHorizontal)
//设置背景颜色，取值范围0.0f-1.0f 值越小越暗 1.0f为透明
.setBackGroundLevel(1.0f)
//设置PopupWindow里的子View及点击事件
.setViewOnclickListener(new CommonPopupWindow.ViewInterface() {
@Override
public void getChildView(View view, int layoutResId) {
TextView tv_child = (TextView) view.findViewById(R.id.tv_child);
tv_child.setText("我是子View");
}
})
//设置外部是否可点击 默认是true
.setOutsideTouchable(true)
//开始构建
.create();
//获取view在window中的绝对位置，不包括状态栏的高度
int[] location = new int[2];
view.getLocationOnScreen(location);
int x = location[0];
int y = location[1];
//弹出PopupWindow
popupWindow.showAtLocation(view, Gravity.LEFT | Gravity.TOP, x, y+view.getHeight()); //
// popupWindow.showAsDropDown(view);
}
R.style.AnimHorizontal：
push_scale_left_in.xml：
push_scale_left_out.xml：
最后说明一下：PopupWindow的位置按照有无偏移分，可以分为偏移和无偏移两种；按照参照物的不同，可以分为相对于某个控件（Anchor锚）和相对于父控件。具体如下：
- showAsDropDown(View anchor)：相对某个控件的位置（正左下方），无偏移
- showAsDropDown(View anchor, int xoff, int yoff)：相对某个控件的位置，有偏移
- showAtLocation(View parent, int gravity, int x, int y)：相对于父控件的位置（例如正中央Gravity.CENTER，下方Gravity.BOTTOM等），可以设置偏移或无偏移