Android PopupWindow增加半透明蒙层

 package com.example.popupwindowwithmask; import android.content.Context; import android.graphics.PixelFormat; import android.graphics.drawable.ColorDrawable; import android.os.IBinder; import android.view.KeyEvent; import android.view.View; import android.view.WindowManager; import android.widget.PopupWindow; /** * Created by kk on 2017/7/22. */ public abstract class BasePopupWindowWithMask extends PopupWindow { protected Context context; private WindowManager windowManager; private View maskView; public BasePopupWindowWithMask(Context context) { super(context); this.context = context; windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE); setContentView(initContentView()); setHeight(initHeight()); setWidth(initWidth()); setOutsideTouchable(true); setFocusable(true); setTouchable(true); setBackgroundDrawable(new ColorDrawable()); } protected abstract View initContentView(); protected abstract int initHeight(); protected abstract int initWidth(); @Override public void showAsDropDown(View anchor) { addMask(anchor.getWindowToken()); super.showAsDropDown(anchor); } private void addMask(IBinder token) { WindowManager.LayoutParams wl = new WindowManager.LayoutParams(); wl.width = WindowManager.LayoutParams.MATCH_PARENT; wl.height = WindowManager.LayoutParams.MATCH_PARENT; wl.format = PixelFormat.TRANSLUCENT;//不设置这个弹出框的透明遮罩显示为黑色 wl.type = WindowManager.LayoutParams.TYPE_APPLICATION_PANEL;//该Type描述的是形成的窗口的层级关系 wl.token = token;//获取当前Activity中的View中的token,来依附Activity maskView = new View(context); maskView.setBackgroundColor(0x7f000000); maskView.setFitsSystemWindows(false); maskView.setOnKeyListener(new View.OnKeyListener() { @Override public boolean onKey(View v, int keyCode, KeyEvent event) { if (keyCode == KeyEvent.KEYCODE_BACK) { removeMask(); return true; } return false; } }); /** * 通过WindowManager的addView方法创建View，产生出来的View根据WindowManager.LayoutParams属性不同，效果也就不同了。 * 比如创建系统顶级窗口，实现悬浮窗口效果！ */ windowManager.addView(maskView, wl); } private void removeMask() { if (null != maskView) { windowManager.removeViewImmediate(maskView); maskView = null; } } @Override public void dismiss() { removeMask(); super.dismiss(); } } 

 package com.example.popupwindowwithmask; import android.content.Context; import android.view.LayoutInflater; import android.view.View; import android.view.WindowManager; /** * Created by kk on 2017/7/22. */ public class TestPopupWindow extends BasePopupWindowWithMask { private int[] mIds; private View contentView; private OnItemClickListener listener; public interface OnItemClickListener { void OnItemClick(View v); } public void setOnItemClickListener(OnItemClickListener listener) { this.listener = listener; } public TestPopupWindow(Context context, int[] mIds) { super(context); this.mIds = mIds; initListener(); } @Override protected View initContentView() { contentView = LayoutInflater.from(context).inflate(R.layout.pop_layout, null, false); return contentView; } private void initListener() { for (int i = 0; i 

 package com.example.popupwindowwithmask; import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.view.View; import android.widget.TextView; import android.widget.Toast; public class MainActivity extends AppCompatActivity { private TextView textView; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); textView = (TextView) findViewById(R.id.tv_popup); final TestPopupWindow testPopupWindow = new TestPopupWindow(this, new int[]{R.id.pop_location, R.id.pop_group, R.id.pop_list}); textView.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { testPopupWindow.showAsDropDown(textView); } }); testPopupWindow.setOnItemClickListener(new TestPopupWindow.OnItemClickListener() { @Override public void OnItemClick(View v) { switch (v.getId()) { case R.id.pop_location: Toast.makeText(MainActivity.this, "地址", Toast.LENGTH_SHORT).show(); break; case R.id.pop_group: Toast.makeText(MainActivity.this, "分组", Toast.LENGTH_SHORT).show(); break; case R.id.pop_list: Toast.makeText(MainActivity.this, "清单", Toast.LENGTH_SHORT).show(); break; } } }); } } 

 package com.example.popupwindowwithmask; import android.content.Context; /** * Created by kk on 2017/7/22. */ public class UIUtils { /** * 获得屏幕宽度 * * @param context * @return */ public static int getScreenWidth(Context context) { return context.getResources().getDisplayMetrics().widthPixels; } /** * 获得屏幕高度 * * @param context * @return */ public static int getScreenHeight(Context context) { return context.getResources().getDisplayMetrics().heightPixels; } }