化繁为简之simplepopupwindow

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化繁为简之SimplePopupWindow

最近项目里总是用到PopupWindow，功能不是很复杂但是写起来很繁琐、代码很乱，所以就自己封装了一个SimplePopupWindow，基于Builder模式。

功能

可点击空白地方或者返回键使PopupWindow消失
可设置并调节半透明黑色背景，并且PopupWindow消失后背景色自动恢复
可设置是否同时弹出软键盘
不会被软键盘覆盖
可设置进出动画

一个简单带动画的PopupWindow弹出

只需四行代码加一个接口回调

 SimplePopupWindow.with(MainActivity.this)        .setView(R.layout.popup_window_main)  //设置你的视图资源文件        .setAnimationStyle(R.style.anim_simple_popup_window)  //设置你的动画资源文件        .show(new SimplePopupWindow.Callback() {        @Override        public void getView(View view, PopupWindow popupWindow) {            //view是你资源文件生成的视图        }    });

NOTE:后面放出动画的资源文件

带半透明灰色背景弹出

 SimplePopupWindow.with(MainActivity.this)        .setView(R.layout.popup_window_main)        .setBackgroundAlpha(0.4f)  //设置你的背景透明度        .show(new SimplePopupWindow.Callback() {        @Override        public void getView(View view, PopupWindow popupWindow) {        }    });

API文档

方法用途 with(Activity activity) 初始化 show(Callback callback) 弹出PopupWindow setView(int ResId) 设置视图的资源文件 setLocation(int Lacation) 设置弹出位置 setBackgroundAlpha(float bgAlpha) 设置黑色背景透明度 setAnimationStyle(int animationStyle) 设置动画的资源文件 setAutoPopupInput(boolean isShowInput) 设置是否自动弹出软键盘

Note:
1. 不要在Activity的onCreate()方法中直接show()，因为此时Activity的视图开没有绘制完成。
2. 一定要在show()之前调用setView()。

SimplePopupWindow代码

//直接新建SimplePopupWindow类拷贝过去public class SimplePopupWindow {    private Activity mActivity;    private View mView;    private boolean mIsShowInput;    private int animationStyle;    private int LOCATION = -1;    public static SimplePopupWindow with(Activity activity) {        return new SimplePopupWindow(activity);    }    public SimplePopupWindow(Activity activity) {        mActivity = activity;        animationStyle = -1;    }    //设置弹出位置，默认底部弹出    public void setLocation(int Lacation){        LOCATION = Lacation;    }    //☆视图资源,必须设置    public SimplePopupWindow setView(int ResId) {        mView = LayoutInflater.from(mActivity).inflate(ResId, null);        return this;    }    //弹出PopupWindow    public void show(Callback callback) {        if (mView == null){            Toast.makeText(mActivity,"请设置View", Toast.LENGTH_SHORT).show();            return;        }        PopupWindow window = new PopupWindow(mView, ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT, true);        if (animationStyle != -1)  //如果设置了动画，则启用动画            window.setAnimationStyle(animationStyle);        window.setBackgroundDrawable(new ColorDrawable());        window.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);  //不会被软键盘覆盖        window.setOnDismissListener(new PopupWindow.OnDismissListener() { //弹窗消失时恢复背景色            @Override            public void onDismiss() {                setBackgroundAlpha(1f);            }        });        callback.getView(mView,window);        if (LOCATION != -1)            window.showAtLocation(mActivity.getWindow().getDecorView().findViewById(android.R.id.content), LOCATION, 0, 0);        else            window.showAtLocation(mActivity.getWindow().getDecorView().findViewById(android.R.id.content), Gravity.BOTTOM | Gravity.CENTER_HORIZONTAL, 0, 0);        showInPut();    }    //设置黑色半透明背景，建议设置0.4f,默认不设置    public SimplePopupWindow setBackgroundAlpha(float bgAlpha) {        WindowManager.LayoutParams lp = mActivity.getWindow().getAttributes();        lp.alpha = bgAlpha;        if (bgAlpha == 1) {            mActivity.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_DIM_BEHIND);//不移除该Flag的话,在有视频的页面上的视频会出现黑屏的bug        } else {            mActivity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_DIM_BEHIND);//此行代码主要是解决在华为手机上半透明效果无效的bug        }        mActivity.getWindow().setAttributes(lp);        return this;    }    //设置是否自动弹出软键盘,默认为否    public SimplePopupWindow setAutoPopupInput(boolean isShowInput) {        mIsShowInput = isShowInput;        return this;    }    //设置进出动画    public SimplePopupWindow setAnimationStyle(int animationStyle){        this.animationStyle = animationStyle;        return this;    }    //显示软键盘    private void showInPut(){        if (mIsShowInput){            new Handler().postDelayed(new Runnable() {                @Override                public void run() {                    InputMethodManager imm = (InputMethodManager)mActivity.getSystemService(Context.INPUT_METHOD_SERVICE);                    imm.toggleSoftInput(0, InputMethodManager.HIDE_NOT_ALWAYS);                }            }, 0);        }    }    //接口回调    public interface Callback {        void getView(View view, PopupWindow popupWindow);    }}

动画资源文件

transition/out.xml （新建transition或anim目录）

<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android" >    <translate        android:duration="250"          android:fromYDelta="0.0"        android:toYDelta="100%" /></set>

transition/in.xml

<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http://schemas.android.com/apk/res/android" >    <translate        android:duration="250"        android:fromYDelta="100.0%"        android:toYDelta="0.0" /></set>

values/styles.xml

<style name="anim_simple_popup_window">    <item name="android:windowEnterAnimation">@transition/in</item>    <item name="android:windowExitAnimation">@transition/out</item></style>

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