ListView常用小技巧
来源：互联网 发布：java预览excel 编辑：程序博客网 时间：2024/05/23 02:03
ListView在我们Android项目中的地位是有目共睹的，相信几乎每一个App中都有它的身影。ListView主要是用列表形式来加载数据，在特定情况下需要实现一些特殊功能：如刷新数据，加载数据，实现动画效果等。作为我们常用的控件，有哪些需要注意的呢？**为ListView的每一Item设置分隔线
第一种方法：也是最简单地方法，在布局文件中设置ListView的
divider属性
如：android:divider=”@color/black”
第二种方法：设置android:divider=”@null”表示不要分隔线，然后，自己在Item布局中添加分隔线。
<code class="hljs xml has-numbering"> <span class="hljs-tag"><<span class="hljs-title">ListView</span> <span class="hljs-attribute">android:id</span>=<span class="hljs-value">"@+id/test_lv"</span> <span class="hljs-attribute">android:layout_width</span>=<span class="hljs-value">"match_parent"</span> <span class="hljs-attribute">android:layout_height</span>=<span class="hljs-value">"wrap_content"</span> <span class="hljs-attribute">android:divider</span>=<span class="hljs-value">"#d1d1d1"</span><span class="hljs-value"><!--设置分隔线颜色--</span>></span> android:dividerHeight="1px"<span class="hljs-comment"><!--设置分隔线高度--></span> > <span class="hljs-tag"></<span class="hljs-title">ListView</span>></span></code><ul style="display: block;" class="pre-numbering"><li>1</li><li>2</li><li>3</li><li>4</li><li>5</li><li>6</li><li>7</li><li>8</li></ul>
** 默认情况下，ListView的item有点击效果，怎么样改变这种效果呢？
设置ListViewr的android:listSelector属性，比如可以设置透明取消这种效果android:listSelector=”@android:color/transparent”
也可以设置自己想要的效果，添加对应的color资源或drawble资源 就可以了。
** 当数据比较多的时候，ListView在滚动时候会显示一个默认的滚动条，要取消这个滚动条的话，可以设置android:scrollbars属性
如：android:scrollbars=”none”
** ListView性能优化，必用ViewHolder来充分发挥ListView的recycle机制
** ListView中数据动态变化，添加或删除数据操作，效果显而易见。
<code class="hljs java has-numbering"><span class="hljs-comment">//实现ListView数据添加删除</span><span class="hljs-keyword">public</span> <span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">MainActivity</span> <span class="hljs-keyword">extends</span> <span class="hljs-title">Activity</span> <span class="hljs-keyword">implements</span> <span class="hljs-title">View</span>.<span class="hljs-title">OnClickListener</span> {</span> <span class="hljs-keyword">private</span> ListView test_lv; <span class="hljs-keyword">private</span> List<TestBean> dataList; <span class="hljs-keyword">private</span> TestAdapter adapter; <span class="hljs-keyword">private</span> Button add_btn, del_btn; <span class="hljs-keyword">private</span> ImageView emptyIv; <span class="hljs-keyword">private</span> LinearLayout operator_ll; <span class="hljs-annotation">@Override</span> <span class="hljs-keyword">protected</span> <span class="hljs-keyword">void</span> <span class="hljs-title">onCreate</span>(Bundle savedInstanceState) { <span class="hljs-keyword">super</span>.onCreate(savedInstanceState); setContentView(R.layout.activity_main); initDatas(); initViews(); } <span class="hljs-keyword">private</span> <span class="hljs-keyword">void</span> <span class="hljs-title">initDatas</span>() { dataList = <span class="hljs-keyword">new</span> ArrayList<>(); <span class="hljs-keyword">for</span> (<span class="hljs-keyword">int</span> i = <span class="hljs-number">0</span>; i < <span class="hljs-number">5</span>; i++) { TestBean bean = <span class="hljs-keyword">new</span> TestBean(); bean.setTitle(<span class="hljs-string">"标题_"</span> + i); bean.setContent(<span class="hljs-string">"这是内容_"</span> + i); bean.setType(i % <span class="hljs-number">2</span> == <span class="hljs-number">0</span> ? <span class="hljs-number">1</span> : <span class="hljs-number">2</span>); dataList.add(bean); } } <span class="hljs-keyword">private</span> <span class="hljs-keyword">void</span> <span class="hljs-title">initViews</span>() { <span class="hljs-keyword">this</span>.test_lv = (ListView) findViewById(R.id.test_lv); <span class="hljs-keyword">this</span>.add_btn = (Button) findViewById(R.id.add_btn); <span class="hljs-keyword">this</span>.del_btn = (Button) findViewById(R.id.del_btn); emptyIv = (ImageView) findViewById(R.id.empty_iv); operator_ll=(LinearLayout)findViewById(R.id.operator_ll); <span class="hljs-keyword">this</span>.add_btn.setOnClickListener(<span class="hljs-keyword">this</span>); <span class="hljs-keyword">this</span>.del_btn.setOnClickListener(<span class="hljs-keyword">this</span>); <span class="hljs-keyword">if</span> (dataList.size() == <span class="hljs-number">0</span>) { emptyIv.setVisibility(View.VISIBLE); operator_ll.setVisibility(View.GONE); test_lv.setEmptyView(emptyIv); } <span class="hljs-keyword">else</span> { emptyIv.setVisibility(View.GONE); operator_ll.setVisibility(View.VISIBLE); adapter = <span class="hljs-keyword">new</span> TestAdapter(<span class="hljs-keyword">this</span>, dataList); test_lv.setAdapter(adapter); } test_lv.setSelection(<span class="hljs-number">15</span>); } <span class="hljs-annotation">@Override</span> <span class="hljs-keyword">public</span> <span class="hljs-keyword">void</span> <span class="hljs-title">onClick</span>(View v) { <span class="hljs-keyword">switch</span> (v.getId()) { <span class="hljs-keyword">case</span> R.id.add_btn: <span class="hljs-comment">//默认增加在第一个位置</span> TestBean bean = <span class="hljs-keyword">new</span> TestBean(); bean.setTitle(<span class="hljs-string">"增加项"</span>); bean.setContent(<span class="hljs-string">"这是增加内容"</span>); bean.setType(<span class="hljs-number">1</span>); dataList.add(<span class="hljs-number">0</span>, bean); <span class="hljs-keyword">break</span>; <span class="hljs-keyword">case</span> R.id.del_btn: <span class="hljs-comment">//默认删除第一条数据</span> dataList.remove(<span class="hljs-number">0</span>); <span class="hljs-keyword">break</span>; } adapter.notifyDataSetChanged();<span class="hljs-comment">//刷新ListView数据</span> }}<span class="hljs-comment">//ListView对应Adapter</span><span class="hljs-keyword">public</span> <span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">TestAdapter</span> <span class="hljs-keyword">extends</span> <span class="hljs-title">BaseAdapter</span> {</span> <span class="hljs-keyword">private</span> Context mContext; <span class="hljs-keyword">private</span> List<TestBean> listDatas; <span class="hljs-keyword">public</span> <span class="hljs-title">TestAdapter</span>(Context mContext, List<TestBean> listDatas) { <span class="hljs-keyword">this</span>.mContext = mContext; <span class="hljs-keyword">this</span>.listDatas = listDatas; } <span class="hljs-annotation">@Override</span> <span class="hljs-keyword">public</span> <span class="hljs-keyword">int</span> <span class="hljs-title">getCount</span>() { <span class="hljs-keyword">return</span> listDatas.size(); } <span class="hljs-annotation">@Override</span> <span class="hljs-keyword">public</span> Object <span class="hljs-title">getItem</span>(<span class="hljs-keyword">int</span> position) { <span class="hljs-keyword">return</span> listDatas.get(position); } <span class="hljs-annotation">@Override</span> <span class="hljs-keyword">public</span> <span class="hljs-keyword">long</span> <span class="hljs-title">getItemId</span>(<span class="hljs-keyword">int</span> position) { <span class="hljs-keyword">return</span> position; } <span class="hljs-annotation">@Override</span> <span class="hljs-keyword">public</span> View <span class="hljs-title">getView</span>(<span class="hljs-keyword">int</span> position, View convertView, ViewGroup parent) { ViewHolder holder = <span class="hljs-keyword">null</span>; <span class="hljs-keyword">if</span> (convertView == <span class="hljs-keyword">null</span>) { holder = <span class="hljs-keyword">new</span> ViewHolder(); convertView = LayoutInflater.from(mContext).inflate(R.layout.test_item, <span class="hljs-keyword">null</span>); holder.title = (TextView) convertView.findViewById(R.id.item_title); holder.content = (TextView) convertView.findViewById(R.id.item_content); convertView.setTag(holder); } <span class="hljs-keyword">else</span> { holder = (ViewHolder) convertView.getTag(); } holder.content.setText(listDatas.get(position).getContent()); holder.title.setText(listDatas.get(position).getTitle()); <span class="hljs-keyword">return</span> convertView; } <span class="hljs-keyword">final</span> class ViewHolder { TextView title; TextView content; }}</code><ul style="display: block;" class="pre-numbering"><li>1</li><li>2</li><li>3</li><li>4</li><li>5</li><li>6</li><li>7</li><li>8</li><li>9</li><li>10</li><li>11</li><li>12</li><li>13</li><li>14</li><li>15</li><li>16</li><li>17</li><li>18</li><li>19</li><li>20</li><li>21</li><li>22</li><li>23</li><li>24</li><li>25</li><li>26</li><li>27</li><li>28</li><li>29</li><li>30</li><li>31</li><li>32</li><li>33</li><li>34</li><li>35</li><li>36</li><li>37</li><li>38</li><li>39</li><li>40</li><li>41</li><li>42</li><li>43</li><li>44</li><li>45</li><li>46</li><li>47</li><li>48</li><li>49</li><li>50</li><li>51</li><li>52</li><li>53</li><li>54</li><li>55</li><li>56</li><li>57</li><li>58</li><li>59</li><li>60</li><li>61</li><li>62</li><li>63</li><li>64</li><li>65</li><li>66</li><li>67</li><li>68</li><li>69</li><li>70</li><li>71</li><li>72</li><li>73</li><li>74</li><li>75</li><li>76</li><li>77</li><li>78</li><li>79</li><li>80</li><li>81</li><li>82</li><li>83</li><li>84</li><li>85</li><li>86</li><li>87</li><li>88</li><li>89</li><li>90</li><li>91</li><li>92</li><li>93</li><li>94</li><li>95</li><li>96</li><li>97</li><li>98</li><li>99</li><li>100</li><li>101</li><li>102</li><li>103</li><li>104</li><li>105</li><li>106</li><li>107</li><li>108</li><li>109</li><li>110</li><li>111</li><li>112</li><li>113</li><li>114</li><li>115</li><li>116</li><li>117</li></ul>** 类似聊天界面，ListView中有多种item样式效果
<code class="hljs java has-numbering"><span class="hljs-comment">//实现ListView中多种item样式</span><span class="hljs-keyword">public</span> <span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">TypeActivity</span> <span class="hljs-keyword">extends</span> <span class="hljs-title">Activity</span> {</span> <span class="hljs-keyword">private</span> ListView type_lv; <span class="hljs-keyword">private</span> List<TestBean> dataList; <span class="hljs-keyword">private</span> TypeAdapter adapter; <span class="hljs-annotation">@Override</span> <span class="hljs-keyword">protected</span> <span class="hljs-keyword">void</span> <span class="hljs-title">onCreate</span>(Bundle savedInstanceState) { <span class="hljs-keyword">super</span>.onCreate(savedInstanceState); setContentView(R.layout.activity_type); initDatas(); initViews(); } <span class="hljs-keyword">private</span> <span class="hljs-keyword">void</span> <span class="hljs-title">initDatas</span>() { dataList = <span class="hljs-keyword">new</span> ArrayList<>(); <span class="hljs-keyword">for</span> (<span class="hljs-keyword">int</span> i = <span class="hljs-number">0</span>; i < <span class="hljs-number">9</span>; i++) { TestBean bean = <span class="hljs-keyword">new</span> TestBean(); bean.setTitle(<span class="hljs-string">"标题_"</span> + i); bean.setContent(<span class="hljs-string">"这是内容_"</span> + i); bean.setType(i % <span class="hljs-number">2</span> == <span class="hljs-number">0</span> ? <span class="hljs-number">1</span> : <span class="hljs-number">2</span>); dataList.add(bean); } } <span class="hljs-keyword">private</span> <span class="hljs-keyword">void</span> <span class="hljs-title">initViews</span>() { <span class="hljs-keyword">this</span>.type_lv = (ListView) findViewById(R.id.type_lv); adapter = <span class="hljs-keyword">new</span> TypeAdapter(<span class="hljs-keyword">this</span>, dataList); type_lv.setAdapter(adapter); }}<span class="hljs-comment">//对应Adapter</span><span class="hljs-keyword">public</span> <span class="hljs-class"><span class="hljs-keyword">class</span> <span class="hljs-title">TypeAdapter</span> <span class="hljs-keyword">extends</span> <span class="hljs-title">BaseAdapter</span> {</span> <span class="hljs-keyword">private</span> Context mContext; <span class="hljs-keyword">private</span> List<TestBean> listDatas; <span class="hljs-keyword">public</span> <span class="hljs-title">TypeAdapter</span>(Context mContext, List<TestBean> listDatas) { <span class="hljs-keyword">this</span>.mContext = mContext; <span class="hljs-keyword">this</span>.listDatas = listDatas; } <span class="hljs-annotation">@Override</span> <span class="hljs-keyword">public</span> <span class="hljs-keyword">int</span> <span class="hljs-title">getCount</span>() { <span class="hljs-keyword">return</span> listDatas.size(); } <span class="hljs-annotation">@Override</span> <span class="hljs-keyword">public</span> Object <span class="hljs-title">getItem</span>(<span class="hljs-keyword">int</span> position) { <span class="hljs-keyword">return</span> listDatas.get(position); } <span class="hljs-annotation">@Override</span> <span class="hljs-keyword">public</span> <span class="hljs-keyword">long</span> <span class="hljs-title">getItemId</span>(<span class="hljs-keyword">int</span> position) { <span class="hljs-keyword">return</span> position; } <span class="hljs-annotation">@Override</span> <span class="hljs-keyword">public</span> View <span class="hljs-title">getView</span>(<span class="hljs-keyword">int</span> position, View convertView, ViewGroup parent) { ViewHolder holder = <span class="hljs-keyword">null</span>; <span class="hljs-comment">//根据样式设置不同的布局及数据展示</span> <span class="hljs-keyword">int</span> type = getItemViewType(position); <span class="hljs-keyword">if</span> (convertView == <span class="hljs-keyword">null</span>) { holder = <span class="hljs-keyword">new</span> ViewHolder(); <span class="hljs-keyword">if</span> (type == <span class="hljs-number">1</span>) { convertView = LayoutInflater.from(mContext).inflate(R.layout.test_item, <span class="hljs-keyword">null</span>); holder.title = (TextView) convertView.findViewById(R.id.item_title); holder.content = (TextView) convertView.findViewById(R.id.item_content); } <span class="hljs-keyword">else</span> { convertView = LayoutInflater.from(mContext).inflate(R.layout.type_item, <span class="hljs-keyword">null</span>); holder.title = (TextView) convertView.findViewById(R.id.type_title); holder.content = (TextView) convertView.findViewById(R.id.type_title); } convertView.setTag(holder); } <span class="hljs-keyword">else</span> { holder = (ViewHolder) convertView.getTag(); } holder.content.setText(listDatas.get(position).getContent()); holder.title.setText(listDatas.get(position).getTitle()); <span class="hljs-keyword">return</span> convertView; }<span class="hljs-comment">//关键方法之getViewTypeCount：获取有多少种样式</span> <span class="hljs-annotation">@Override</span> <span class="hljs-keyword">public</span> <span class="hljs-keyword">int</span> <span class="hljs-title">getViewTypeCount</span>() { <span class="hljs-keyword">return</span> <span class="hljs-number">2</span>; }<span class="hljs-comment">//关键方法之getItemViewType：获取item类型</span> <span class="hljs-annotation">@Override</span> <span class="hljs-keyword">public</span> <span class="hljs-keyword">int</span> <span class="hljs-title">getItemViewType</span>(<span class="hljs-keyword">int</span> position) { <span class="hljs-keyword">return</span> listDatas.get(position).getType(); } <span class="hljs-keyword">final</span> class ViewHolder { TextView title; TextView content; }}</code><ul style="display: block;" class="pre-numbering"><li>1</li><li>2</li><li>3</li><li>4</li><li>5</li><li>6</li><li>7</li><li>8</li><li>9</li><li>10</li><li>11</li><li>12</li><li>13</li><li>14</li><li>15</li><li>16</li><li>17</li><li>18</li><li>19</li><li>20</li><li>21</li><li>22</li><li>23</li><li>24</li><li>25</li><li>26</li><li>27</li><li>28</li><li>29</li><li>30</li><li>31</li><li>32</li><li>33</li><li>34</li><li>35</li><li>36</li><li>37</li><li>38</li><li>39</li><li>40</li><li>41</li><li>42</li><li>43</li><li>44</li><li>45</li><li>46</li><li>47</li><li>48</li><li>49</li><li>50</li><li>51</li><li>52</li><li>53</li><li>54</li><li>55</li><li>56</li><li>57</li><li>58</li><li>59</li><li>60</li><li>61</li><li>62</li><li>63</li><li>64</li><li>65</li><li>66</li><li>67</li><li>68</li><li>69</li><li>70</li><li>71</li><li>72</li><li>73</li><li>74</li><li>75</li><li>76</li><li>77</li><li>78</li><li>79</li><li>80</li><li>81</li><li>82</li><li>83</li><li>84</li><li>85</li><li>86</li><li>87</li><li>88</li><li>89</li><li>90</li><li>91</li><li>92</li><li>93</li><li>94</li><li>95</li><li>96</li><li>97</li><li>98</li><li>99</li></ul>相关布局
activity_main.xml
<code class="hljs xml has-numbering"><span class="hljs-pi"><?xml version="1.0" encoding="utf-8"?></span><span class="hljs-tag"><<span class="hljs-title">LinearLayout</span> <span class="hljs-attribute">xmlns:android</span>=<span class="hljs-value">"http://schemas.android.com/apk/res/android"</span> <span class="hljs-attribute">xmlns:tools</span>=<span class="hljs-value">"http://schemas.android.com/tools"</span> <span class="hljs-attribute">android:layout_width</span>=<span class="hljs-value">"match_parent"</span> <span class="hljs-attribute">android:layout_height</span>=<span class="hljs-value">"match_parent"</span> <span class="hljs-attribute">android:orientation</span>=<span class="hljs-value">"vertical"</span>></span> <span class="hljs-tag"><<span class="hljs-title">LinearLayout</span> <span class="hljs-attribute">android:id</span>=<span class="hljs-value">"@+id/operator_ll"</span> <span class="hljs-attribute">android:layout_width</span>=<span class="hljs-value">"match_parent"</span> <span class="hljs-attribute">android:layout_height</span>=<span class="hljs-value">"wrap_content"</span> <span class="hljs-attribute">android:orientation</span>=<span class="hljs-value">"horizontal"</span>></span> <span class="hljs-tag"><<span class="hljs-title">Button</span> <span class="hljs-attribute">android:id</span>=<span class="hljs-value">"@+id/add_btn"</span> <span class="hljs-attribute">android:layout_width</span>=<span class="hljs-value">"0dp"</span> <span class="hljs-attribute">android:layout_height</span>=<span class="hljs-value">"wrap_content"</span> <span class="hljs-attribute">android:layout_weight</span>=<span class="hljs-value">"1"</span> <span class="hljs-attribute">android:gravity</span>=<span class="hljs-value">"center"</span> <span class="hljs-attribute">android:text</span>=<span class="hljs-value">"添加"</span> /></span> <span class="hljs-tag"><<span class="hljs-title">Button</span> <span class="hljs-attribute">android:id</span>=<span class="hljs-value">"@+id/del_btn"</span> <span class="hljs-attribute">android:layout_width</span>=<span class="hljs-value">"0dp"</span> <span class="hljs-attribute">android:layout_height</span>=<span class="hljs-value">"wrap_content"</span> <span class="hljs-attribute">android:layout_weight</span>=<span class="hljs-value">"1"</span> <span class="hljs-attribute">android:gravity</span>=<span class="hljs-value">"center"</span> <span class="hljs-attribute">android:text</span>=<span class="hljs-value">"删除"</span> /></span> <span class="hljs-tag"></<span class="hljs-title">LinearLayout</span>></span> <span class="hljs-tag"><<span class="hljs-title">ListView</span> <span class="hljs-attribute">android:id</span>=<span class="hljs-value">"@+id/test_lv"</span> <span class="hljs-attribute">android:layout_width</span>=<span class="hljs-value">"match_parent"</span> <span class="hljs-attribute">android:layout_height</span>=<span class="hljs-value">"wrap_content"</span> <span class="hljs-attribute">android:divider</span>=<span class="hljs-value">"#d1d1d1"</span><span class="hljs-value"><!--分隔线颜色--</span>></span> android:dividerHeight="1px"<span class="hljs-comment"><!--分隔线高度--></span> android:listSelector="@android:color/transparent"<span class="hljs-comment"><!--取消默认点击效果--></span> android:scrollbars="none"><span class="hljs-comment"><!--隐藏滚动条--></span> <span class="hljs-tag"></<span class="hljs-title">ListView</span>></span> <span class="hljs-tag"><<span class="hljs-title">ImageView</span> <span class="hljs-attribute">android:id</span>=<span class="hljs-value">"@+id/empty_iv"</span> <span class="hljs-attribute">android:layout_width</span>=<span class="hljs-value">"wrap_content"</span> <span class="hljs-attribute">android:layout_height</span>=<span class="hljs-value">"wrap_content"</span> <span class="hljs-attribute">android:layout_gravity</span>=<span class="hljs-value">"center"</span> <span class="hljs-attribute">android:layout_marginTop</span>=<span class="hljs-value">"100dp"</span> <span class="hljs-attribute">android:src</span>=<span class="hljs-value">"@mipmap/empty"</span> <span class="hljs-attribute">android:visibility</span>=<span class="hljs-value">"gone"</span> /></span><span class="hljs-tag"></<span class="hljs-title">LinearLayout</span>></span></code><ul style="display: block;" class="pre-numbering"><li>1</li><li>2</li><li>3</li><li>4</li><li>5</li><li>6</li><li>7</li><li>8</li><li>9</li><li>10</li><li>11</li><li>12</li><li>13</li><li>14</li><li>15</li><li>16</li><li>17</li><li>18</li><li>19</li><li>20</li><li>21</li><li>22</li><li>23</li><li>24</li><li>25</li><li>26</li><li>27</li><li>28</li><li>29</li><li>30</li><li>31</li><li>32</li><li>33</li><li>34</li><li>35</li><li>36</li><li>37</li><li>38</li><li>39</li><li>40</li><li>41</li><li>42</li><li>43</li><li>44</li><li>45</li><li>46</li><li>47</li><li>48</li><li>49</li><li>50</li><li>51</li></ul>
activity_type.xml
<code class="hljs xml has-numbering"><span class="hljs-pi"><?xml version="1.0" encoding="utf-8"?></span><span class="hljs-tag"><<span class="hljs-title">LinearLayout</span> <span class="hljs-attribute">xmlns:android</span>=<span class="hljs-value">"http://schemas.android.com/apk/res/android"</span> <span class="hljs-attribute">xmlns:tools</span>=<span class="hljs-value">"http://schemas.android.com/tools"</span> <span class="hljs-attribute">android:layout_width</span>=<span class="hljs-value">"match_parent"</span> <span class="hljs-attribute">android:layout_height</span>=<span class="hljs-value">"match_parent"</span> <span class="hljs-attribute">android:orientation</span>=<span class="hljs-value">"vertical"</span>></span> <span class="hljs-tag"><<span class="hljs-title">ListView</span> <span class="hljs-attribute">android:id</span>=<span class="hljs-value">"@+id/type_lv"</span> <span class="hljs-attribute">android:layout_width</span>=<span class="hljs-value">"match_parent"</span> <span class="hljs-attribute">android:layout_height</span>=<span class="hljs-value">"wrap_content"</span> ></span><span class="hljs-tag"></<span class="hljs-title">ListView</span>></span><span class="hljs-tag"></<span class="hljs-title">LinearLayout</span>></span></code><ul style="display: block;" class="pre-numbering"><li>1</li><li>2</li><li>3</li><li>4</li><li>5</li><li>6</li><li>7</li><li>8</li><li>9</li><li>10</li><li>11</li><li>12</li><li>13</li><li>14</li><li>15</li><li>16</li></ul>
test_item.xml
<code class="hljs xml has-numbering"><span class="hljs-pi"><?xml version="1.0" encoding="utf-8"?></span><span class="hljs-tag"><<span class="hljs-title">LinearLayout</span> <span class="hljs-attribute">xmlns:android</span>=<span class="hljs-value">"http://schemas.android.com/apk/res/android"</span> <span class="hljs-attribute">android:layout_width</span>=<span class="hljs-value">"match_parent"</span> <span class="hljs-attribute">android:layout_height</span>=<span class="hljs-value">"wrap_content"</span> <span class="hljs-attribute">android:orientation</span>=<span class="hljs-value">"vertical"</span> <span class="hljs-attribute">android:paddingLeft</span>=<span class="hljs-value">"15dp"</span> <span class="hljs-attribute">android:layout_marginTop</span>=<span class="hljs-value">"5dp"</span> <span class="hljs-attribute">android:layout_marginBottom</span>=<span class="hljs-value">"5dp"</span>></span> <span class="hljs-tag"><<span class="hljs-title">TextView</span> <span class="hljs-attribute">android:id</span>=<span class="hljs-value">"@+id/item_title"</span> <span class="hljs-attribute">android:layout_width</span>=<span class="hljs-value">"wrap_content"</span> <span class="hljs-attribute">android:layout_height</span>=<span class="hljs-value">"wrap_content"</span> <span class="hljs-attribute">android:text</span>=<span class="hljs-value">"Hello World!"</span> /></span> <span class="hljs-tag"><<span class="hljs-title">TextView</span> <span class="hljs-attribute">android:id</span>=<span class="hljs-value">"@+id/item_content"</span> <span class="hljs-attribute">android:layout_width</span>=<span class="hljs-value">"wrap_content"</span> <span class="hljs-attribute">android:layout_height</span>=<span class="hljs-value">"wrap_content"</span> <span class="hljs-attribute">android:layout_marginTop</span>=<span class="hljs-value">"5dp"</span> <span class="hljs-attribute">android:text</span>=<span class="hljs-value">"Hello World!"</span> /></span><span class="hljs-tag"></<span class="hljs-title">LinearLayout</span>></span></code>
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