小生功能贴<一> --- 动态添加应用 具有长按删除功能

---恢复内容开始---

动态添加应用 具有长按删除功能 功能如下图：

              

（图片显示功能不是你要的，那就默默关闭页面吧）

设计思路：

　　页面一：用girdview网格显示图标，在自定义的adapter中为每一个子Item添加内容并且加上点击事件（长按和短按），“+”button跳转到第二个页面。

　　页面二：用AutoCompeleteTextView带提示的输入框，用adapter为其添加提示字符串组，确认显示所搜索到的应用，这里显示搜索到的应用我不是用ListView，而是在代码中动态添加布局，每一次按“搜索”前先清空里面的子布局。按”添加“后判断该应用是否已经添加，没有的话就在页面一加上，并且返回页面一。

　　注意：数据我是用常量类Constant，没有介入SQL，只为测试方便。判断当前是否是长按状态下我用Constant.press进行标记。

下面贴上代码童鞋们一起玩玩。

　　

  1 package com.example.practice1;

  2 

  3 import java.util.ArrayList;

  4 import java.util.HashMap;

  5 import java.util.Timer;

  6 

  7 import android.app.Activity;

  8 import android.app.ActionBar;

  9 import android.app.Fragment;

 10 import android.content.Context;

 11 import android.content.Intent;

 12 import android.os.Bundle;

 13 import android.os.SystemClock;

 14 import android.util.Log;

 15 import android.view.LayoutInflater;

 16 import android.view.Menu;

 17 import android.view.MenuItem;

 18 import android.view.MotionEvent;

 19 import android.view.View;

 20 import android.view.View.OnClickListener;

 21 import android.view.View.OnLongClickListener;

 22 import android.view.View.OnTouchListener;

 23 import android.view.ViewGroup;

 24 import android.widget.AdapterView;

 25 import android.widget.AdapterView.OnItemClickListener;

 26 import android.widget.BaseAdapter;

 27 import android.widget.Chronometer;

 28 import android.widget.GridView;

 29 import android.widget.ImageView;

 30 import android.widget.SimpleAdapter;

 31 import android.widget.TextView;

 32 import android.widget.Toast;

 33 import android.os.Build;

 34 

 35 public class MainActivity extends Activity {

 36     

 37     Grid_Adapter adp;

 38     GridView gridview;

 39     long startMili=0;

 40     long endMili=0;

 41     @Override

 42     protected void onCreate(Bundle savedInstanceState) {

 43         super.onCreate(savedInstanceState);

 44         setContentView(R.layout.main);

 45         gridview = (GridView) findViewById(R.id.gridview);  

 46         adp=new Grid_Adapter(this,Constant.num);

 47           //添加并且显示  

 48         gridview.setAdapter(adp);  

 49           

 50         }

 51     

 52 

 53         @Override

 54         public void onBackPressed() {                        //长按后 不想删除 按返回键的触发事件

 55             if(!Constant.press)

 56             finish();

 57             else {

 58                 String st;

 59                 

 60                 for(int k=12;k<Constant.num-1;k++){st=Constant.text[k];

 61                 if(st.equals("微信")){Constant.image[k]=R.drawable.weixin_press;}

 62                 if(st.equals("微博")){Constant.image[k]=R.drawable.weibo_press;}

 63                 if(st.equals("酷狗音乐")){Constant.image[k]=R.drawable.kugou_press;}

 64                 if(st.equals("华农宝")){Constant.image[k]=R.drawable.huanongbao_press;}

 65                 if(st.equals("QQ")){Constant.image[k]=R.drawable.qq_press;}

 66                 if(st.equals("飞信")){Constant.image[k]=R.drawable.feixin_press;}

 67                 }

 68                 Constant.press=false;

 69                 Constant.num++;

 70                 Constant.image[Constant.num-1]=R.drawable.image13;

 71                 Constant.text[Constant.num-1]="13";

 72                 for(int i=0;i<Constant.num;i++){

 73                     Log.v("num",Constant.text[i]);

 74                 }

 75                 adp.notifyDataSetChanged();//更新

 76             }

 77         }

 78         

 79         private class appClick implements OnTouchListener{    //子Item的OnTouch触发事件

 80             int position;

 81             public appClick(int position) {

 82                 // TODO Auto-generated constructor stub

 83                 this.position=position;

 84             }

 85 

 86             @Override

 87             public boolean onTouch(View arg0, MotionEvent event) {

 88                 // TODO Auto-generated method stub

 89                 

 90                 if(event.getAction() == MotionEvent.ACTION_UP){  

 91                     Log.v("s","抬起");

 92                     

 93                     endMili=System.currentTimeMillis();// 当前时间对应的毫秒数

 94                     

 95                     long Time = endMili-startMili;      //时间差

 96                     Log.v("time",Long.toString(Time));

 97                     

 98                 if(Time>1000){                            //根据时间差来判断是短按还是长按，这里标准时一秒

 99                     Log.v("long","long_out");appLongClick(position);}

100                 else {

101                     Log.v("short","short_out");appShortClick(position);}

102                 }  

103                 

104                 

105                 

106                 if(event.getAction() == MotionEvent.ACTION_DOWN){  

107                     startMili=System.currentTimeMillis();// 当前时间对应的毫秒数

108                     Log.v("q","按下"); 

109                 } 

110                 return true;

111             }

112             

113         }

114     

115           private void appShortClick(int p){                    //短按处理

116               int position=p;

117             Log.v("short","short_in");

118                 if(Constant.press){

119                     Log.v("ee","eee");

120                     for(int k=position;k<Constant.num-1;k++){

121                         Constant.image[k]=Constant.image[k+1];

122                         Constant.text[k]=Constant.text[k+1];

123                     }

124                     Log.v("shit",Constant.text[Constant.num-1]);

125                     Constant.press=true;

126                     Constant.image[Constant.num-1]=R.drawable.image13;

127                     Constant.text[Constant.num-1]="13";

128                     if(Constant.num!=13)

129                     {Constant.num--;}else {Constant.press=false;}

130                     Log.v("d",Integer.toString(Constant.num));

131                     adp.notifyDataSetChanged();

132                     //更新

133                 }else if(!Constant.press&&p==Constant.num-1){

134                     Intent intent =new Intent();

135                         intent.setClass(MainActivity.this, AddApplication.class);

136                         startActivity(intent);

137                         finish();

138                 }

139             

140               

141               

142           }

143         private void  appLongClick(int p){                  //长按处理

144                                

145                     if(!Constant.press&&p==Constant.num-1){}

146                     else{

147                         String st;      

148                     for(int k=12;k<Constant.num-1;k++){st=Constant.text[k];

149                     if(st.equals("微信")){Constant.image[k]=R.drawable.weixin_press;}

150                     if(st.equals("微博")){Constant.image[k]=R.drawable.weibo_press;}

151                     if(st.equals("酷狗音乐")){Constant.image[k]=R.drawable.kugou_press;}

152                     if(st.equals("华农宝")){Constant.image[k]=R.drawable.huanongbao_press;}

153                     if(st.equals("QQ")){Constant.image[k]=R.drawable.qq_press;}

154                     if(st.equals("飞信")){Constant.image[k]=R.drawable.feixin_press;}

155                     }

156                     

157                     Constant.press=true;

158                     Constant.num--;

159                     adp.notifyDataSetChanged();//更新

160                     }

161         }  

162 

163         class Grid_Adapter extends BaseAdapter{                //GridView的自定义adapter

164             Context mContext; 

165             public Grid_Adapter(Context context,int num){

166                 mContext=context;

167                 

168             }

169             @Override

170             public int getCount() {

171                 // TODO Auto-generated method stub

172                 return Constant.num;

173             }

174 

175             @Override

176             public Object getItem(int arg0) {

177                 // TODO Auto-generated method stub

178                 return Constant.image[arg0];

179             }

180 

181             @Override

182             public long getItemId(int arg0) {

183                 // TODO Auto-generated method stub

184                 return arg0;

185             }

186 

187             @Override

188             public View getView(int position, View arg1, ViewGroup arg2) {

189                 // TODO Auto-generated method stub

190                 

191                 LayoutInflater inflater = LayoutInflater.from(mContext); 

192                 View view = null;

193                 view = inflater.inflate(R.layout.grid_adapter, null);

194                 ImageView im=(ImageView)view.findViewById(R.id.ItemImage);

195                 

196                 TextView te=(TextView)view.findViewById(R.id.ItemText);

197                 

198                 im.setBackgroundResource((int)getItem(position));

199                 te.setText(Constant.text[position]);

200                

201                 if(position>11&&position<=Constant.num-1){

202                     

203                     view.setOnTouchListener(new appClick(position)); 

204                     

205                 }

206                     

207                 

208                 

209                 return view;

210             

211             }}

212 }

213 

214     

MainActivity的XML布局文件就一个GiewView，这里就不贴了。

  1 package com.example.practice1;

  2 

  3 import android.app.Activity;

  4 import android.content.Intent;

  5 import android.os.Bundle;

  6 import android.text.Editable;

  7 import android.view.LayoutInflater;

  8 import android.view.View;

  9 import android.widget.ArrayAdapter;

 10 import android.widget.AutoCompleteTextView;

 11 import android.widget.Button;

 12 import android.widget.ImageView;

 13 import android.widget.LinearLayout;

 14 import android.widget.TextView;

 15 import android.widget.Toast;

 16 

 17 public class AddApplication extends Activity{

 18 AutoCompleteTextView autotext;

 19 Button bu_se;

 20 LinearLayout app_add;

 21     @Override

 22     protected void onCreate(Bundle savedInstanceState) {

 23         // TODO Auto-generated method stub

 24         super.onCreate(savedInstanceState);

 25         setContentView(R.layout.addapplication);

 26         autotext=(AutoCompleteTextView)findViewById(R.id.autotext);

 27         ArrayAdapter<String> adapter=new ArrayAdapter<String>(

 28                 this,android.R.layout.simple_dropdown_item_1line,Constant.application);

 29         autotext.setAdapter(adapter);

 30         

 31         bu_se=(Button)findViewById(R.id.bu_search);

 32         bu_se.setOnClickListener(new View.OnClickListener() {        //搜索按钮的触发事件

 33             

 34             @Override

 35             public void onClick(View arg0) {

 36                 // TODO Auto-generated method stub

 37                 Editable st;

 38                 st=autotext.getText();

 39                 String str=st.toString();

 40                 view(str);

 41             }

 42         });

 43     }

 44     @Override

 45     public void onBackPressed() {                                        //按返回键回到第一个页面

 46         Intent intent =new Intent(AddApplication.this,MainActivity.class);

 47         startActivity(intent);

 48         finish();

 49     }

 50     public void view(String str){                                        //按下搜索后显示应用

 51         LinearLayout app_add=(LinearLayout)findViewById(R.id.list_app);    //先清空list_app的子布局

 52          int count = app_add.getChildCount();

 53          while(count-1>=0){app_add.removeViewAt(count-1);count--;}

 54             

 55         LayoutInflater inflater = LayoutInflater.from(this);

 56         int i=0;

 57         for(i=0;i<Constant.application.length;i++){                        //把输入字符串与现存所有应用名进行匹配

 58             final int position =i;

 59             if(Constant.application[i].indexOf(str)!=-1){

 60                 View view_0 = inflater.inflate(R.layout.list_view, null);

 61          TextView app_name = (TextView)view_0.findViewById(R.id.app_name);

 62          ImageView app_image= (ImageView)view_0.findViewById(R.id.app_icon);

 63          Button bu_add =(Button)view_0.findViewById(R.id.app_add);

 64                 app_name.setText(Constant.application[i]);

 65                 app_image.setBackgroundResource(Constant.app_icon[i]);

 66                 bu_add.setOnClickListener(new View.OnClickListener() {    //为添加按钮设置监控

 67                       

 68                       @Override

 69                       public void onClick(View arg0) {

 70                           // TODO Auto-generated method stub

 71                           if(verification(position)){                        //如果未添加过该应用则在第一个页面添加并返回第一个页面

 72                               Constant.image[Constant.num]=Constant.image[Constant.num-1];

 73                           Constant.text[Constant.num]=Constant.text[Constant.num-1];

 74                             Constant.image[Constant.num-1]=Constant.app_icon[position];

 75                           Constant.text[Constant.num-1]=Constant.application[position];

 76                           Constant.num++;

 77                             Intent intent =new Intent();

 78                             intent.setClass(AddApplication.this, MainActivity.class);

 79                             startActivity(intent);  

 80                             finish();      

 81                           }else{

 82                               Toast.makeText(AddApplication.this, "该应用你已添加>.<",

 83                                     Toast.LENGTH_SHORT).show();

 84                           }

 85                            

 86                       }

 87                 });

 88                

 89                 app_add.addView(view_0);                                    //往list_app添加子Item

 90             }

 91             

 92         }

 93         

 94     }

 95             private boolean verification(int p){

 96                 for(int i=0;i<Constant.image.length;i++){

 97                     if(Constant.application[p].equals(Constant.text[i])){

 98                         return false;

 99                     }

100                 }

101                 return true;

102 }

103 }

Constant,用来保存测试数据

 1 package com.example.practice1;

 2 

 3 public class Constant {

 4     public static boolean press = false;

 5 public static int num=13;

 6 public static int[] image={R.drawable.image1,

 7     R.drawable.image2,R.drawable.image3,R.drawable.image4,R.drawable.image5,

 8 R.drawable.image6,R.drawable.image7,R.drawable.image8,R.drawable.image9,

 9 R.drawable.image10,R.drawable.image11,R.drawable.image12,R.drawable.image13,0,0,0,0,0,0,0};

10     

11 public static String[] text={"1","2","3","4","5","6","7","8","9","10","11","12","13","0","0","0","0","0","0","0"};

12 public static String[] application ={"微信","QQ","华农宝","飞信","微博","酷狗音乐"};

13 public static int[] app_icon={R.drawable.weixin,R.drawable.qq,R.drawable.huanongbao,R.drawable.feixin,R.drawable.weibo,R.drawable.kugou};

14 

15 }

最后是三个XML 

grid_adapter.XML

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="wrap_content"

    android:layout_height="wrap_content"

    android:orientation="vertical"

    android:gravity="center_horizontal" >

     <ImageView   

               android:layout_height="wrap_content"   

               android:id="@+id/ItemImage"   

               android:layout_width="wrap_content"   

               

               >   

              

         </ImageView>  

         <TextView   

               android:layout_width="match_parent"   

               android:layout_height="wrap_content"   

               android:text="TextView01" 

                 android:gravity="center"

               android:id="@+id/ItemText">  

         </TextView>  



</LinearLayout>

　　list_view

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

	android:layout_marginTop="5px"

	android:layout_marginLeft="5px"

	android:layout_marginRight="5px"

    android:orientation="horizontal" >

    <LinearLayout 

    android:layout_width="0px"

    android:layout_height="wrap_content"

    android:layout_weight="7"

    android:orientation="horizontal"

        >

        <ImageView 

            android:layout_marginLeft="2px"

            android:layout_marginTop="2px"

            android:layout_marginBottom="2px"

            android:layout_marginRight="2px"

            android:id="@+id/app_icon"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            

            />

        <TextView 

            android:id="@+id/app_name"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:layout_gravity="center_horizontal"

            android:gravity="center"

            />

    </LinearLayout>

<LinearLayout 

    android:layout_width="0px"

    android:layout_height="wrap_content"

    android:layout_weight="3"

    android:orientation="horizontal"

    >

    <Button 

        android:layout_marginLeft="2px"

            android:layout_marginTop="2px"

            android:layout_marginBottom="2px"

            android:layout_marginRight="2px"

        android:id="@+id/app_add"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="添加"

        

        />

</LinearLayout>

</LinearLayout>

　　addapplication.XML

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

	android:layout_marginTop="5px"

	android:layout_marginLeft="5px"

	android:layout_marginRight="5px"

    android:orientation="horizontal" >

    <LinearLayout 

    android:layout_width="0px"

    android:layout_height="wrap_content"

    android:layout_weight="7"

    android:orientation="horizontal"

        >

        <ImageView 

            android:layout_marginLeft="2px"

            android:layout_marginTop="2px"

            android:layout_marginBottom="2px"

            android:layout_marginRight="2px"

            android:id="@+id/app_icon"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            

            />

        <TextView 

            android:id="@+id/app_name"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:layout_gravity="center_horizontal"

            android:gravity="center"

            />

    </LinearLayout>

<LinearLayout 

    android:layout_width="0px"

    android:layout_height="wrap_content"

    android:layout_weight="3"

    android:orientation="horizontal"

    >

    <Button 

        android:layout_marginLeft="2px"

            android:layout_marginTop="2px"

            android:layout_marginBottom="2px"

            android:layout_marginRight="2px"

        android:id="@+id/app_add"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="添加"

        

        />

</LinearLayout>

</LinearLayout>

　　

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