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【转】为ListView每个Item上面的按钮添加事件

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  • Post category:其他


原文网址：http://blog.csdn.net/qq435757399/article/details/8256453

1.先看下效果图：




在这里仅供测试，我把数据都写死了，根据需要可以自己进行修改，此外实现ListView上面每个Item上的Button的事件有两种方法：



1.使用final变量扩展局部变量的生命周期范围主要代码（本文最后附全部代码）：


[java]


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  1. //注意原本getView方法中的int position变量是非final的，现在改为final

  2. @Override

  3. public View getView(

    final

    int position, View convertView, ViewGroup parent) {
  4. ViewHolder holder =

    null;

  5. if (convertView ==

    null) {
  7. holder=

    new ViewHolder();

  9. //可以理解为从vlist获取view  之后把view返回给ListView
  10. convertView = mInflater.inflate(R.layout.vlist,

    null);
  11. holder.title = (TextView)convertView.findViewById(R.id.title);
  12. holder.info = (TextView)convertView.findViewById(R.id.info);
  13. holder.viewBtn = (Button)convertView.findViewById(R.id.view_btn);
  14. convertView.setTag(holder);
  15. }

    else {
  16. holder = (ViewHolder)convertView.getTag();
  17. }
  19. holder.title.setText((String)mData.get(position).get(

    “title”));
  20. holder.info.setText((String)mData.get(position).get(

    “info”));
  21. holder.viewBtn.setTag(position);

  22. //给Button添加单击事件  添加Button之后ListView将失去焦点  需要的直接把Button的焦点去掉
  23. holder.viewBtn.setOnClickListener(

    new View.OnClickListener() {

  25. @Override

  26. public

    void onClick(View v) {
  27. showInfo(position);
  28. }
  29. });

  31. //holder.viewBtn.setOnClickListener(MyListener(position));

  33. return convertView;
  34. }
  35. }

  37. //提取出来方便点

  38. public

    final

    class ViewHolder {

  39. public TextView title;

  40. public TextView info;

  41. public Button viewBtn;
  42. }

  43. public

    void showInfo(

    int position){
  45. ImageView img=

    new ImageView(ListViewActivity.

    this);
  46. img.setImageResource(R.drawable.b);

  47. new AlertDialog.Builder(

    this).setView(img)
  48. .setTitle(

    “详情”+position)
  49. .setMessage(

    “菜名：”+title[position]+

    ”   价格:”+info[position])
  50. .setPositiveButton(

    “确定”,

    new DialogInterface.OnClickListener() {

  51. @Override

  52. public

    void onClick(DialogInterface dialog,

    int which) {
  53. }
  54. })
  55. .show();
  56. }



2.使用类记录每个Button的位置，使每个BUTTON都有自己的Listener主要代码：


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  1. //****************************************第二种方法，高手一般都用此种方法,具体原因，我还不清楚,有待研究

  3. public View getView(

    int position, View convertView, ViewGroup parent) {
  4. ViewHolder holder =

    null;
  5. MyListener myListener=

    null;

  6. if (convertView ==

    null) {
  8. holder=

    new ViewHolder();

  10. //可以理解为从vlist获取view  之后把view返回给ListView
  11. myListener=

    new MyListener(position);
  13. convertView = mInflater.inflate(R.layout.vlist,

    null);
  14. holder.title = (TextView)convertView.findViewById(R.id.title);
  15. holder.info = (TextView)convertView.findViewById(R.id.info);
  16. holder.viewBtn = (Button)convertView.findViewById(R.id.view_btn);
  17. convertView.setTag(holder);
  18. }

    else {
  19. holder = (ViewHolder)convertView.getTag();
  20. }
  22. holder.title.setText((String)mData.get(position).get(

    “title”));
  23. holder.info.setText((String)mData.get(position).get(

    “info”));
  24. holder.viewBtn.setTag(position);

  25. //给Button添加单击事件  添加Button之后ListView将失去焦点  需要的直接把Button的焦点去掉
  26. holder.viewBtn.setOnClickListener( myListener);

  28. //holder.viewBtn.setOnClickListener(MyListener(position));

  30. return convertView;
  31. }
  32. }

  34. private

    class MyListener

    implements OnClickListener{

  35. int mPosition;

  36. public MyListener(

    int inPosition){
  37. mPosition= inPosition;
  38. }

  39. @Override

  40. public

    void onClick(View v) {

  41. // TODO Auto-generated method stub
  42. Toast.makeText(ListViewActivity.

    this, title[mPosition], Toast.LENGTH_SHORT).show();
  43. }
  45. }

  56. //提取出来方便点

  57. public

    final

    class ViewHolder {

  58. public TextView title;

  59. public TextView info;

  60. public Button viewBtn;
  61. }



3.全部代码

1.ListViewActivity.java全部代码：


[java]


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  1. package ms.ListView;

  3. import java.util.ArrayList;

  4. import java.util.HashMap;

  5. import java.util.List;

  6. import java.util.Map;

  8. import android.app.Activity;

  9. import android.app.AlertDialog;

  10. import android.content.Context;

  11. import android.content.DialogInterface;

  12. import android.os.Bundle;

  13. import android.view.LayoutInflater;

  14. import android.view.View;

  15. import android.view.View.OnClickListener;

  16. import android.view.ViewGroup;

  17. import android.widget.AdapterView;

  18. import android.widget.AdapterView.OnItemSelectedListener;

  19. import android.widget.BaseAdapter;

  20. import android.widget.Button;

  21. import android.widget.ImageView;

  22. import android.widget.ListView;

  23. import android.widget.TextView;

  24. import android.widget.Toast;

  26. public

    class ListViewActivity

    extends Activity {

  27. /** Called when the activity is first created. */

  28. private List<Map<String, Object>> mData;

  29. private

    int flag;

  30. public

    static String title[]=

    new String[]{


    “菜名0”,

    “菜名1”,

    “菜名2”,

    “菜名3”,

    “菜名4”,

    “菜名5”,

    “菜名6”,

    “菜名7”,

    “菜名8”,

    “菜名9”};

  31. public

    static String info[]=

    new String[]{

    “￥：28”,

    “￥：28”,

    “￥：28”,

    “￥：28”,

    “￥：28”,

    “￥：28”,

    “￥：28”,

    “￥：28”,

    “￥：28”,

    “￥：28”,};

  34. @Override

  35. public

    void onCreate(Bundle savedInstanceState) {

  36. super.onCreate(savedInstanceState);
  37. setContentView(R.layout.main);
  38. mData = getData();
  39. ListView listView = (ListView) findViewById(R.id.listView);
  40. MyAdapter adapter =

    new MyAdapter(

    this);
  41. listView.setAdapter(adapter);
  44. }

  48. //获取动态数组数据  可以由其他地方传来(json等)

  49. private List<Map<String, Object>> getData() {
  50. List<Map<String, Object>> list =

    new ArrayList<Map<String, Object>>();

  51. for(

    int i=

    0;i<title.length;i++){
  52. Map<String, Object> map =

    new HashMap<String, Object>();
  53. map.put(

    “title”, title[i]);
  54. map.put(

    “info”, info[i]);
  55. list.add(map);
  56. }

  58. return list;
  59. }

  61. public

    class MyAdapter

    extends BaseAdapter {

  63. private LayoutInflater mInflater;

  65. public MyAdapter(Context context) {

  66. this.mInflater = LayoutInflater.from(context);
  67. }

  69. @Override

  70. public

    int getCount() {

  71. // TODO Auto-generated method stub

  72. return mData.size();
  73. }

  75. @Override

  76. public Object getItem(

    int position) {

  77. // TODO Auto-generated method stub

  78. return

    null;
  79. }

  81. @Override

  82. public

    long getItemId(

    int position) {

  83. // TODO Auto-generated method stub

  84. return

    0;
  85. }

  86. //****************************************final方法

  87. //注意原本getView方法中的int position变量是非final的，现在改为final

  88. @Override

  89. public View getView(

    final

    int position, View convertView, ViewGroup parent) {
  90. ViewHolder holder =

    null;

  91. if (convertView ==

    null) {
  93. holder=

    new ViewHolder();

  95. //可以理解为从vlist获取view  之后把view返回给ListView
  97. convertView = mInflater.inflate(R.layout.vlist,

    null);
  98. holder.title = (TextView)convertView.findViewById(R.id.title);
  99. holder.info = (TextView)convertView.findViewById(R.id.info);
  100. holder.viewBtn = (Button)convertView.findViewById(R.id.view_btn);
  101. convertView.setTag(holder);
  102. }

    else {
  103. holder = (ViewHolder)convertView.getTag();
  104. }
  106. holder.title.setText((String)mData.get(position).get(

    “title”));
  107. holder.info.setText((String)mData.get(position).get(

    “info”));
  108. holder.viewBtn.setTag(position);

  109. //给Button添加单击事件  添加Button之后ListView将失去焦点  需要的直接把Button的焦点去掉
  110. holder.viewBtn.setOnClickListener(

    new View.OnClickListener() {

  112. @Override

  113. public

    void onClick(View v) {
  114. showInfo(position);
  115. }
  116. });

  118. //holder.viewBtn.setOnClickListener(MyListener(position));

  120. return convertView;
  121. }
  122. }

  123. //****************************************第二种方法，高手一般都用此种方法,具体原因，我还不清楚,有待研究

  125. //      public View getView(int position, View convertView, ViewGroup parent) {

  126. //           ViewHolder holder = null;

  127. //           MyListener myListener=null;

  128. //          if (convertView == null) {

  129. //

  130. //              holder=new ViewHolder();

  131. //

  132. //              //可以理解为从vlist获取view  之后把view返回给ListView

  133. //               myListener=new MyListener(position);

  134. //

  135. //              convertView = mInflater.inflate(R.layout.vlist, null);

  136. //              holder.title = (TextView)convertView.findViewById(R.id.title);

  137. //              holder.info = (TextView)convertView.findViewById(R.id.info);

  138. //              holder.viewBtn = (Button)convertView.findViewById(R.id.view_btn);

  139. //              convertView.setTag(holder);

  140. //          }else {

  141. //              holder = (ViewHolder)convertView.getTag();

  142. //          }

  143. //

  144. //          holder.title.setText((String)mData.get(position).get(“title”));

  145. //          holder.info.setText((String)mData.get(position).get(“info”));

  146. //          holder.viewBtn.setTag(position);

  147. //          //给Button添加单击事件  添加Button之后ListView将失去焦点  需要的直接把Button的焦点去掉

  148. //          holder.viewBtn.setOnClickListener( myListener);

  149. //

  150. //          //holder.viewBtn.setOnClickListener(MyListener(position));

  151. //

  152. //          return convertView;

  153. //      }

  154. //  }

  155. //

  156. //   private class MyListener implements OnClickListener{

  157. //          int mPosition;

  158. //          public MyListener(int inPosition){

  159. //              mPosition= inPosition;

  160. //          }

  161. //          @Override

  162. //          public void onClick(View v) {

  163. //              // TODO Auto-generated method stub

  164. //              Toast.makeText(ListViewActivity.this, title[mPosition], Toast.LENGTH_SHORT).show();

  165. //          }

  166. //

  167. //      }

  168. //

  169. //

  178. //提取出来方便点

  179. public

    final

    class ViewHolder {

  180. public TextView title;

  181. public TextView info;

  182. public Button viewBtn;
  183. }

  184. public

    void showInfo(

    int position){
  186. ImageView img=

    new ImageView(ListViewActivity.

    this);
  187. img.setImageResource(R.drawable.b);

  188. new AlertDialog.Builder(

    this).setView(img)
  189. .setTitle(

    “详情”+position)
  190. .setMessage(

    “菜名：”+title[position]+

    ”   价格:”+info[position])
  191. .setPositiveButton(

    “确定”,

    new DialogInterface.OnClickListener() {

  192. @Override

  193. public

    void onClick(DialogInterface dialog,

    int which) {
  194. }
  195. })
  196. .show();
  197. }
  200. }


2.main.xml


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  1. <?

    xml

    version=

    “1.0”

    encoding=

    “utf-8”

    ?>

  2. <

    LinearLayout

    xmlns:android=

    “http://schemas.android.com/apk/res/android”

  3. android:layout_width=

    “fill_parent”

  4. android:layout_height=

    “fill_parent”

  5. android:orientation=

    “vertical”

    >

  7. <

    ListView

  8. android:id=

    “@+id/listView”

  9. android:layout_width=

    “fill_parent”

  10. android:layout_height=

    “fill_parent”

  11. android:divider=

    “@drawable/list_line”

  12. android:dividerHeight=

    “1dip”

    />

  14. </

    LinearLayout

    >


3.vlist.xml


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  1. <?

    xml

    version=

    “1.0”

    encoding=

    “utf-8”

    ?>

  2. <

    LinearLayout

    xmlns:android=

    “http://schemas.android.com/apk/res/android”

  3. android:layout_width=

    “fill_parent”

  4. android:layout_height=

    “fill_parent”

  5. android:orientation=

    “vertical”

    >

  7. <

    ListView

  8. android:id=

    “@+id/listView”

  9. android:layout_width=

    “fill_parent”

  10. android:layout_height=

    “fill_parent”

  11. android:divider=

    “@drawable/list_line”

  12. android:dividerHeight=

    “1dip”

    />

  14. </

    LinearLayout

    >


4.btn_detail_selecter.xml


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  1. <?

    xml

    version=

    “1.0”

    encoding=

    “utf-8”

    ?>

  2. <

    selector

    xmlns:android=

    “http://schemas.android.com/apk/res/android”

    >

  4. <

    item

    android:drawable=

    “@drawable/btn_detail_normal”

    android:state_enabled=

    “true”

    android:state_focused=

    “false”

    android:state_pressed=

    “false”

    />

  5. <

    item

    android:drawable=

    “@drawable/btn_detail_pressed”

    android:state_enabled=

    “true”

    android:state_pressed=

    “true”

    />

  6. <

    item

    android:drawable=

    “@drawable/btn_detail_pressed”

    android:state_enabled=

    “true”

    android:state_focused=

    “true”

    />

  8. </

    selector

    >


5.item.xml


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  1. <?

    xml

    version=

    “1.0”

    encoding=

    “UTF-8”

    ?>

  2. <

    selector

    xmlns:android=

    “http://schemas.android.com/apk/res/android”

    >

  4. <

    item

    android:drawable=

    “@drawable/item_higlight”

    android:state_focused=

    “true”

    android:state_pressed=

    “false”

    />

  5. <

    item

    android:drawable=

    “@drawable/item_higlight”

    android:state_focused=

    “false”

    android:state_pressed=

    “true”

    />

  6. <

    item

    android:drawable=

    “@drawable/item_higlight”

    android:state_selected=

    “true”

    />

  7. <

    item

    android:drawable=

    “@drawable/item_higlight”

    android:state_focused=

    “true”

    />

  8. <

    item

    android:drawable=

    “@drawable/item_higlight”

    />

  10. </

    selector

    >

6.colors.xml


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  1. <?

    xml

    version=

    “1.0”

    encoding=

    “UTF-8”

    ?>

  2. <

    resources

    >

  3. <

    color

    name=

    “region”

    >#8000ff00

    </

    color

    >

  4. <

    color

    name=

    “listTitle”

    >#ff23323b

    </

    color

    >

  5. <

    color

    name=

    “text”

    >#ff848f9b

    </

    color

    >

  6. <

    color

    name=

    “write”

    >#ffffffff

    </

    color

    >

  7. </

    resources

    >


7.values.xml


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  1. <?

    xml

    version=

    “1.0”

    encoding=

    “utf-8”

    ?>

  2. <

    resources

    >

  4. <

    string

    name=

    “hello”

    >Hello World, ListViewActivity!

    </

    string

    >

  5. <

    string

    name=

    “app_name”

    >ListView

    </

    string

    >

  7. </

    resources

    >


8.drawables.xml


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  1. <?

    xml

    version=

    “1.0”

    encoding=

    “UTF-8”

    ?>

  2. <

    resources

    >

  3. <

    item

    type=

    “drawable”

    name=

    “bg”

    >#80000000

    </

    item

    >

  4. <

    item

    type=

    “drawable”

    name=

    “transparent”

    >#00000000

    </

    item

    >

  5. <

    item

    type=

    “drawable”

    name=

    “lightblue”

    >#ffcfe1ed

    </

    item

    >

  6. <

    item

    type=

    “drawable”

    name=

    “readmenu_btn_bg_f”

    >#30ffffff

    </

    item

    >

  7. <

    item

    type=

    “drawable”

    name=

    “readmenu_btn_bg_p”

    >#50ffffff

    </

    item

    >

  8. <

    item

    type=

    “drawable”

    name=

    “blackMask”

    >#30000000

    </

    item

    >

  9. </

    resources

    >

需要源码的请到github  clone，方便的话Follow一下哈：

https://github.com/Juneor/ListViewButtonListener

转载于:https://www.cnblogs.com/wi100sh/p/5425713.html