首页 > 代码库 > 小生功能贴<一> --- 动态添加应用 具有长按删除功能
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adapter164 Context mContext; 165 public Grid_Adapter(Context context,int num){166 mContext=context;167 168 }169 @Override170 public int getCount() {171 // TODO Auto-generated method stub172 return Constant.num;173 }174 175 @Override176 public Object getItem(int arg0) {177 // TODO Auto-generated method stub178 return Constant.image[arg0];179 }180 181 @Override182 public long getItemId(int arg0) {183 // TODO Auto-generated method stub184 return arg0;185 }186 187 @Override188 public View getView(int position, View arg1, ViewGroup arg2) {189 // TODO Auto-generated method stub190 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>
最后附上源码，有需要的请留言留下你的邮箱，供嫌长的童鞋学习学习= = ~
有问题请留言
小生功能贴<一> --- 动态添加应用 具有长按删除功能
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