026_01Toast之完全自定义

　　Toast显示的时间最长是5S,有时候需要显示的时间更长；Toast默认背景是黑色的，有时候希望它更炫酷；所以，你需要自定义Toast。

那么，怎么去自定义呢？找到系统Toast源代码抽出来，依葫芦画瓢！分两步：

　　 1.获取Toast的对象:获取toast里面需要填充的view对象

　　 2.显示toast：设置一些显示的参数，获取一个窗口管理器，将该view加入到该窗口上

　　通常Toast.makeText(Context context, CharSequence text, int duration).show一步搞定。那先来看看makeTest()方法中是些什么。

 1     public static Toast makeText(Context context, CharSequence text, int duration) {
 2         Toast result = new Toast(context);
 3 
 4         LayoutInflater inflate = (LayoutInflater)
 5                 context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
 6         View v = inflate.inflate(com.android.internal.R.layout.transient_notification, null);
 7         TextView tv = (TextView)v.findViewById(com.android.internal.R.id.message);
 8         tv.setText(text);
 9         
10         result.mNextView = v;
11         result.mDuration = duration;
12 
13         return result;
14     }

　　可以看到黄色标注的填充了一个系统的布局文件，换成自己定义的布局文件

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     android:layout_width="match_parent"
 4     android:layout_height="match_parent"
 5     android:orientation="vertical"
 6     android:background="@drawable/call_locate_gray">
 7 
 8     <TextView
 9         android:id="@+id/tv_mytoast_addr"
10         android:layout_width="wrap_content"
11         android:layout_height="wrap_content"
12         android:layout_gravity="center_horizontal"
13         android:textColor="#000000"
14         android:drawableLeft="@android:drawable/stat_sys_phone_call"
15         android:shadowColor="#BB000000"
16         android:shadowRadius="2.75"
17         />
18 
19 </LinearLayout>

　　

　再来看看这个TN构造函数：

 　　private final WindowManager.LayoutParams mParams = new WindowManager.LayoutParams();

 1         TN() {
 2             // XXX This should be changed to use a Dialog, with a Theme.Toast
 3             // defined that sets up the layout params appropriately.
 4             final WindowManager.LayoutParams params = mParams;
 5             params.height = WindowManager.LayoutParams.WRAP_CONTENT;
 6             params.width = WindowManager.LayoutParams.WRAP_CONTENT;
 7             params.format = PixelFormat.TRANSLUCENT;
 8             params.windowAnimations = com.android.internal.R.style.Animation_Toast;//自定义时删除
 9             params.type = WindowManager.LayoutParams.TYPE_TOAST;
10             params.setTitle("Toast");
11             params.flags = WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
12                     | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
13                     | WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE;
14         }

 

　源代码中有showMyToast()和hideMyToast()两个方法后，可以任意显示和关闭

　　　　private WindowManager mWM;
　　　　private View v;

 1     private void showMyToast(String addr) {
 2         //初始化view 
 3         LayoutInflater inflate = (LayoutInflater)
 4                 getSystemService(Context.LAYOUT_INFLATER_SERVICE);
 5         v = inflate.inflate(R.layout.mytoast_showaddr, null);
 6         TextView tv = (TextView)v.findViewById(R.id.tv_mytoast_addr);
 7         tv.setText(addr);
 8         
 9         
10          
11           //private final WindowManager.LayoutParams mParams = new WindowManager.LayoutParams();
12 
13           final WindowManager.LayoutParams params = new WindowManager.LayoutParams();;
14           params.height = WindowManager.LayoutParams.WRAP_CONTENT;
15           params.width = WindowManager.LayoutParams.WRAP_CONTENT;
16           params.format = PixelFormat.TRANSLUCENT;
17           //params.windowAnimations = com.android.internal.R.style.Animation_Toast;
18           params.type = WindowManager.LayoutParams.TYPE_TOAST;
19           params.setTitle("Toast");
20           params.flags = WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
21                   | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
22                   | WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE;
23           
24           mWM = (WindowManager)getSystemService(Context.WINDOW_SERVICE);//获取窗口管理器并加入该view
25           mWM.addView(v, params);
26           
27      }

 

1     private void hideMyToast(){
2         
3         if (v!=null) {
4             mWM.removeView(v);
5         }
6         v=null;
7     }

 

效果图：本例是模仿手机管家中来电开启显示号码归属地功能。当来电时显示使用toast显示归属地，去电时toast消失。

 

源代码：

  1 package com.cskaoyan.mobilemanager.service;
  2 
  3 import com.cskaoyan.mobilemanager.R;
  4 import com.cskaoyan.mobilemanager.dao.AdressQueryDao;
  5 
  6 import android.app.Service;
  7 import android.content.Context;
  8 import android.content.Intent;
  9 import android.graphics.PixelFormat;
 10 import android.os.IBinder;
 11 import android.telephony.PhoneStateListener;
 12 import android.telephony.TelephonyManager;
 13 import android.view.LayoutInflater;
 14 import android.view.View;
 15 import android.view.WindowManager;
 16 import android.widget.TextView;
 17 import android.widget.Toast;
 18 
 19 public class ShowCallLocation extends Service {
 20 
 21     private TextView tv;
 22     private WindowManager mWM;
 23     private View v;
 24     private TelephonyManager tm;
 25     private MyPhoneCallListener listener;
 26 
 27     @Override
 28     public IBinder onBind(Intent intent) {
 29         // TODO Auto-generated method stub
 30         return null;
 31     }
 32     
 33     @Override
 34     public int onStartCommand(Intent intent, int flags, int startId) {
 35         tm = (TelephonyManager) getSystemService(TELEPHONY_SERVICE);
 36         listener = new MyPhoneCallListener();
 37         tm.listen(listener, PhoneStateListener.LISTEN_CALL_STATE);
 38         
 39         System.out.println("ShowCallLocation.onStartCommand()");
 40         return super.onStartCommand(intent, flags, startId);
 41     }
 42     
 43     class MyPhoneCallListener extends PhoneStateListener{
 44 
 45         @Override
 46         public void onCallStateChanged(int state, String incomingNumber) {
 47             // TODO Auto-generated method stub
 48             
 49             switch (state) {
 50             case TelephonyManager.CALL_STATE_IDLE:
 51                 hideMyToast();
 52                 break;
 53             case TelephonyManager.CALL_STATE_RINGING:
 54                 String addr = AdressQueryDao.querryAddr(incomingNumber);//取出来电查询到的号码归属地
 55                 System.out
 56                         .println("ShowCallLocation.MyPhoneCallListener.onCallStateChanged()"+addr);
 57                 Toast.makeText(getApplicationContext(), addr, 1).show();
 58 
 59                 //显示一个自定义的toast
 60                  showMyToast(addr);
 61                 break;
 62             case TelephonyManager.CALL_STATE_OFFHOOK:
 63                 
 64                 break;
 65                 
 66          
 67       
 68             default:
 69                 break;
 70             }
 71             super.onCallStateChanged(state, incomingNumber);
 72         }
 73 
 74     
 75         
 76     }
 77     
 78     /*
 79      * 1.获取Toast的对象——:获取toast里面需要填充的view对象
 80      * 2.显示toast：设置一些显示的参数，获取一个窗口管理器，将该view加入到该窗口上
 81      * */
 82     private void showMyToast(String addr) {
 83         //初始化view 
 84         LayoutInflater inflate = (LayoutInflater)
 85                 getSystemService(Context.LAYOUT_INFLATER_SERVICE);
 86         v = inflate.inflate(R.layout.mytoast_showaddr, null);
 87         TextView tv = (TextView)v.findViewById(R.id.tv_mytoast_addr);
 88         tv.setText(addr);
 89         
 90         
 91          
 92           //private final WindowManager.LayoutParams mParams = new WindowManager.LayoutParams();
 93 
 94           final WindowManager.LayoutParams params = new WindowManager.LayoutParams();;
 95           params.height = WindowManager.LayoutParams.WRAP_CONTENT;
 96           params.width = WindowManager.LayoutParams.WRAP_CONTENT;
 97           params.format = PixelFormat.TRANSLUCENT;
 98           //params.windowAnimations = com.android.internal.R.style.Animation_Toast;
 99           params.type = WindowManager.LayoutParams.TYPE_TOAST;
100           params.setTitle("Toast");
101           params.flags = WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
102                   | WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
103                   | WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE;
104           
105           mWM = (WindowManager)getSystemService(Context.WINDOW_SERVICE);
106           mWM.addView(v, params);
107           
108      }
109     
110     private void hideMyToast(){
111         
112         if (v!=null) {
113             mWM.removeView(v);
114         }
115         v=null;
116     }
117     
118     @Override
119     public void onDestroy() {
120         // TODO Auto-generated method stub
121         tm.listen(listener, PhoneStateListener.LISTEN_NONE);
122 
123         if (tm!=null) {
124             tm=null;
125         }
126         if (listener!=null) {
127             listener=null;
128         }
129         super.onDestroy();
130         System.out.println("ShowCallLocation.onDestroy()");
131     }
132     
133 
134 }

 

posted @ 2015-06-15 21:03  woodrow_woo  阅读(161)  评论(0)  编辑  收藏  举报