最近項目里總是用到PopupWindow，功能不是很復雜但是寫起來很繁瑣、代碼很亂，所以就自己封裝了一個SimplePopupWindow，基于Builder模式。

功能

• 可點擊空白地方或者返回鍵使PopupWindow消失
• 可設置并調(diào)節(jié)半透明黑色背景，并且PopupWindow消失后背景色自動恢復
• 不會被軟鍵盤覆蓋
• 可設置是否同時彈出軟鍵盤
• 可設置進出動畫

一個簡單帶動畫的PopupWindow彈出

image

只需四行代碼加一個接口回調(diào)

SimplePopupWindow.with(MainActivity.this)
    .setView(R.layout.popup_window_main)  //設置你的視圖資源文件
    .setAnimationStyle(R.style.anim_simple_popup_window)  //設置你的動畫資源文件
    .show(new SimplePopupWindow.Callback() {
    @Override
    public void getView(View view, PopupWindow popupWindow) {
        //view是你資源文件生成的視圖
    
    }
});

NOTE:后面放出動畫的資源文件

帶半透明灰色背景

image

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

API文檔

Note:

• 不要在Activity的onCreate()方法中直接show()，因為此時Activity的視圖開沒有繪制完成。
• 一定要在show()之前調(diào)用setView()。
• layout布局文件要設置固定高度或wrap_content

SimplePopupWindow代碼

//直接新建SimplePopupWindow類拷貝過去
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;
}


//設置彈出位置，默認底部彈出
public void setLocation(int Lacation){
    LOCATION = Lacation;
}


//視圖資源,必須設置
public SimplePopupWindow setView(int ResId) {
    mView = LayoutInflater.from(mActivity).inflate(ResId, null);
    return this;
}


//彈出PopupWindow
public void show(Callback callback) {
    if (mView == null){
        Toast.makeText(mActivity,"請設置View", Toast.LENGTH_SHORT).show();
        return;
    }

    PopupWindow window = new PopupWindow(mView, ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT, true);

    if (animationStyle != -1)  //如果設置了動畫，則啟用動畫
        window.setAnimationStyle(animationStyle);

    window.setBackgroundDrawable(new ColorDrawable());

    window.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);  //不會被軟鍵盤覆蓋

    window.setOnDismissListener(new PopupWindow.OnDismissListener() { //彈窗消失時恢復背景色
        @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();
}


//設置黑色半透明背景，建議設置0.4f,默認不設置
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);//不移除該Flag的話,在有視頻的頁面上的視頻會出現(xiàn)黑屏的bug
    } else {
        mActivity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_DIM_BEHIND);//此行代碼主要是解決在華為手機上半透明效果無效的bug
    }
    mActivity.getWindow().setAttributes(lp);
    return this;
}


//設置是否自動彈出軟鍵盤,默認為否
public SimplePopupWindow setAutoPopupInput(boolean isShowInput) {
    mIsShowInput = isShowInput;
    return this;
}


//設置進出動畫
public SimplePopupWindow setAnimationStyle(int animationStyle){
    this.animationStyle = animationStyle;
    return this;
}


//顯示軟鍵盤
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);
    }
}


//接口回調(diào)
public interface Callback {
    void getView(View view, PopupWindow popupWindow);
  }
}

動畫資源文件

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

 <?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>