Android UI设计与开发之PopupWindow仿腾讯新闻底部弹出菜单

package com.yanis.demo;

import android.app.Activity;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.LinearLayout.LayoutParams;
import android.widget.PopupWindow;

public class PopupWindowActivity extends Activity {
 PopupWindow pop;
 Button btn;

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_popup_window);
  btn = (Button) findViewById(R.id.btnShowWindow);

  LayoutInflater inflater = LayoutInflater.from(this);
  // 引入窗口配置文件 - 即弹窗的界面
  View view = inflater.inflate(R.layout.my_popup_window, null);
  // PopupWindow实例化
  pop = new PopupWindow(view, LayoutParams.WRAP_CONTENT,
    LayoutParams.WRAP_CONTENT, false);

  btn.setOnClickListener(new OnClickListener() {
   @Override
   public void onClick(View v) {
    if (pop.isShowing()) {
     // 隐藏窗口，如果设置了点击窗口外消失，则不需要此方式隐藏
     pop.dismiss();
    } else {
     // 弹出窗口显示内容视图,默认以锚定视图的左下角为起点，这里为点击按钮
     pop.showAsDropDown(v);
    }
   }
  });

 }
}

package com.yanis.popup_window;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.graphics.drawable.BitmapDrawable;
import android.os.Bundle;
import android.util.Log;
import android.view.Gravity;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnKeyListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.LinearLayout.LayoutParams;
import android.widget.PopupWindow;
import android.widget.TextView;
import android.widget.Toast;
public class MainActivity extends Activity implements OnClickListener,
OnKeyListener {
PopupWindow pop;
TextView hideView;
Button btnCancel;
ImageView btnNight, btnWord, btnExit;
View view;
boolean isOut, isIn;// 是否弹窗显示
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initView();
initData();
}
/**
* 初始化组件
*/
private void initView() {
hideView = (TextView) findViewById(R.id.hideView);
LayoutInflater inflater = LayoutInflater.from(this);
// 引入窗口配置文件 - 即弹窗的界面
view = inflater.inflate(R.layout.menu_view, null);
btnNight = (ImageView) view.findViewById(R.id.btnNight);
btnWord = (ImageView) view.findViewById(R.id.btnWord);
btnExit = (ImageView) view.findViewById(R.id.btnExit);
btnCancel = (Button) view.findViewById(R.id.btnCancel);
}
/**
* 初始化数据
*/
private void initData() {
btnNight.setOnClickListener(this);
btnWord.setOnClickListener(this);
btnExit.setOnClickListener(this);
btnCancel.setOnClickListener(this);
view.setFocusableInTouchMode(true);
view.setOnKeyListener(this);
// PopupWindow实例化
pop = new PopupWindow(view, LayoutParams.MATCH_PARENT,
LayoutParams.WRAP_CONTENT, true);
/**
* PopupWindow 设置
*/
// pop.setFocusable(true); //设置PopupWindow可获得焦点
// pop.setTouchable(true); //设置PopupWindow可触摸
// pop.setOutsideTouchable(true); // 设置非PopupWindow区域可触摸
// 设置PopupWindow显示和隐藏时的动画
pop.setAnimationStyle(R.style.MenuAnimationFade);
/**
* 改变背景可拉的弹出窗口。后台可以设置为null。 这句话必须有，否则按返回键popwindow不能消失 或者加入这句话
* ColorDrawable dw = new
* ColorDrawable(-00000);pop.setBackgroundDrawable(dw);
*/
pop.setBackgroundDrawable(new BitmapDrawable());
}
/**
* 按钮点击事件监听
* 
* @param v
*/
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btnNight:
changePopupWindowState();
Toast.makeText(MainActivity.this, "你点击了夜间模式", Toast.LENGTH_SHORT)
.show();
break;
case R.id.btnWord:
changePopupWindowState();
Toast.makeText(MainActivity.this, "你点击了文本模式", Toast.LENGTH_SHORT)
.show();
break;
case R.id.btnExit:
exitTheDemo();
break;
case R.id.btnCancel:
changePopupWindowState();
break;
}
}
/**
* 退出程序
*/
private void exitTheDemo() {
changePopupWindowState();
new AlertDialog.Builder(MainActivity.this).setMessage("确定退出这个 Demo 吗？")
.setPositiveButton("确定", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
finish();
}
}).setNegativeButton("取消", null).show();
}
/**
* 改变 PopupWindow 的显示和隐藏
*/
private void changePopupWindowState() {
if (pop.isShowing()) {
// 隐藏窗口，如果设置了点击窗口外消失，则不需要此方式隐藏
pop.dismiss();
} else {
// 弹出窗口显示内容视图,默认以锚定视图的左下角为起点，这里为点击按钮
pop.showAtLocation(hideView, Gravity.BOTTOM, 0, 0);
}
}
// Called when a key was pressed down and not handled by any of the views
// inside of the activity
@Override
public boolean onKeyDown(int keyCode, KeyEvent event) {
switch (keyCode) {
case KeyEvent.KEYCODE_MENU:// 菜单键监听
isOut = true;
changePopupWindowState();
break;
}
return super.onKeyDown(keyCode, event);
}
// Called when a hardware key is dispatched to a view.
@Override
public boolean onKey(View v, int keyCode, KeyEvent event) {
switch (keyCode) {
case KeyEvent.KEYCODE_MENU:
if (isOut && !isIn) {
isOut = false;
isIn = true;
} else if (!isOut && isIn) {
isIn = false;
changePopupWindowState();
}
break;
}
return false;
}
}