string(14) "127.0.0.1:9200"
URL: http://127.0.0.1:9200/likecs_art_db/_search<br>REQUEST:<pre>Array
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</pre>RESPONSE:<pre>string(8139) "{"took":57,"timed_out":false,"_shards":{"total":1,"successful":1,"skipped":0,"failed":0},"hits":{"total":{"value":10000,"relation":"gte"},"max_score":62.622368,"hits":[{"_index":"likecs_art_db","_type":"_doc","_id":"410098","_score":62.622368,"_source":{"id":"410098","text":"Jetpack\u67b6\u6784\u7ec4\u4ef6\uff08\u4e8c\uff09Lifecycle\u4f7f\u7528 - \u5b89\u5353\u7b14\u8bb0\u4fa0","intro":"\u76ee\u5f55\n\nECharts\n\u5f02\u6b65\u52a0\u8f7d\n\n\n\nECharts\r\n\u6570\u636e\u53ef\u89c6\u5316\u5728\u8fc7\u53bb\u51e0\u5e74\u4e2d\u53d6\u5f97\u4e86\u5de8\u5927\u8fdb\u5c55\u3002\u5f00\u53d1\u4eba\u5458\u5bf9\u53ef\u89c6\u5316\u4ea7\u54c1\u7684\u671f\u671b\u4e0d\u518d\u662f\u7b80\u5355\u7684\u56fe\u8868\u521b\u5efa\u5de5\u5177\uff0c\u800c\u662f\u5728\u4ea4\u4e92\u3001\u6027\u80fd\u3001\u6570\u636e\u5904\u7406\u7b49\u65b9\u9762\u6709\u66f4\u9ad8\u7684\u8981\u6c42\u3002\r\nchart.setOption({\r\n    color: [\r\n        ","username":"ganchuanpu","tagsname":"","tagsid":"","catesname":null,"catesid":"","createtime":"1632971310"},"highlight":{"text":["#em#Jetpack#/em##em#架#/em##em#构#/em##em#组#/em##em#件#/em#（#em#二#/em#）#em#Lifecycle#/em##em#使#/em##em#用#/em# - 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</pre>string(14) "127.0.0.1:9200"
URL: http://127.0.0.1:9200/likecs_art_db/_search<br>REQUEST:<pre>Array
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</pre>RESPONSE:<pre>string(7752) "{"took":62,"timed_out":false,"_shards":{"total":1,"successful":1,"skipped":0,"failed":0},"hits":{"total":{"value":10000,"relation":"gte"},"max_score":62.622368,"hits":[{"_index":"likecs_art_db","_type":"_doc","_id":"410105","_score":27.330345,"_source":{"id":"410105","text":"Jetpack \u67b6\u6784\u7ec4\u4ef6 LiveData ViewModel MD","intro":"\u76ee\u5f55\n\nECharts\n\u5f02\u6b65\u52a0\u8f7d\n\n\n\nECharts\r\n\u6570\u636e\u53ef\u89c6\u5316\u5728\u8fc7\u53bb\u51e0\u5e74\u4e2d\u53d6\u5f97\u4e86\u5de8\u5927\u8fdb\u5c55\u3002\u5f00\u53d1\u4eba\u5458\u5bf9\u53ef\u89c6\u5316\u4ea7\u54c1\u7684\u671f\u671b\u4e0d\u518d\u662f\u7b80\u5355\u7684\u56fe\u8868\u521b\u5efa\u5de5\u5177\uff0c\u800c\u662f\u5728\u4ea4\u4e92\u3001\u6027\u80fd\u3001\u6570\u636e\u5904\u7406\u7b49\u65b9\u9762\u6709\u66f4\u9ad8\u7684\u8981\u6c42\u3002\r\nchart.setOption({\r\n    color: [\r\n        ","username":"baiqiantao","tagsname":null,"tagsid":"","catesname":"","catesid":"","createtime":"1632971319"},"highlight":{"text":["#em#Jetpack#/em# #em#架#/em##em#构#/em##em#组#/em##em#件#/em# LiveData ViewModel MD"]}},{"_index":"likecs_art_db","_type":"_doc","_id":"203418047","_score":27.330345,"_source":{"id":"203418047","text":"Android Jetpack\u67b6\u6784\u7ec4\u4ef6\u4e4bNavigation","intro":"\u76ee\u5f55\n\nECharts\n\u5f02\u6b65\u52a0\u8f7d\n\n\n\nECharts\r\n\u6570\u636e\u53ef\u89c6\u5316\u5728\u8fc7\u53bb\u51e0\u5e74\u4e2d\u53d6\u5f97\u4e86\u5de8\u5927\u8fdb\u5c55\u3002\u5f00\u53d1\u4eba\u5458\u5bf9\u53ef\u89c6\u5316\u4ea7\u54c1\u7684\u671f\u671b\u4e0d\u518d\u662f\u7b80\u5355\u7684\u56fe\u8868\u521b\u5efa\u5de5\u5177\uff0c\u800c\u662f\u5728\u4ea4\u4e92\u3001\u6027\u80fd\u3001\u6570\u636e\u5904\u7406\u7b49\u65b9\u9762\u6709\u66f4\u9ad8\u7684\u8981\u6c42\u3002\r\nchart.setOption({\r\n    color: [\r\n        ","username":"","tagsname":null,"tagsid":"","catesname":null,"catesid":"","createtime":"1639879432"},"highlight":{"text":["Android #em#Jetpack#/em##em#架#/em##em#构#/em##em#组#/em##em#件#/em#之Navigation"]}},{"_index":"likecs_art_db","_type":"_doc","_id":"203425344","_score":27.281088,"_source":{"id":"203425344","text":"MVVM \u6700\u5b8c\u6574\u67b6\u6784\u89e3\u6790\u53ca Jetpack \u67b6\u6784\u7ec4\u4ef6\u7684\u4f7f\u7528","intro":"\u76ee\u5f55\n\nECharts\n\u5f02\u6b65\u52a0\u8f7d\n\n\n\nECharts\r\n\u6570\u636e\u53ef\u89c6\u5316\u5728\u8fc7\u53bb\u51e0\u5e74\u4e2d\u53d6\u5f97\u4e86\u5de8\u5927\u8fdb\u5c55\u3002\u5f00\u53d1\u4eba\u5458\u5bf9\u53ef\u89c6\u5316\u4ea7\u54c1\u7684\u671f\u671b\u4e0d\u518d\u662f\u7b80\u5355\u7684\u56fe\u8868\u521b\u5efa\u5de5\u5177\uff0c\u800c\u662f\u5728\u4ea4\u4e92\u3001\u6027\u80fd\u3001\u6570\u636e\u5904\u7406\u7b49\u65b9\u9762\u6709\u66f4\u9ad8\u7684\u8981\u6c42\u3002\r\nchart.setOption({\r\n    color: [\r\n        ","username":"","tagsname":null,"tagsid":"","catesname":null,"catesid":"","createtime":"1625423863"},"highlight":{"text":["MVVM 最完整#em#架#/em##em#构#/em#解析及 #em#Jetpack#/em# #em#架#/em##em#构#/em##em#组#/em##em#件#/em#的#em#使#/em##em#用#/em#"]}},{"_index":"likecs_art_db","_type":"_doc","_id":"657975","_score":27.194927,"_source":{"id":"657975","text":"Android\u7cfb\u7edf\u67b6\u6784\u4e0e\u7cfb\u7edf\u6e90\u7801\u76ee\u5f55 - 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#em#安#/em##em#卓#/em##em#笔#/em##em#记#/em##em#侠#/em#"]}},{"_index":"likecs_art_db","_type":"_doc","_id":"410121","_score":26.731514,"_source":{"id":"410121","text":"Jetpack\u5b66\u4e60-Lifecycle","intro":"\u76ee\u5f55\n\nECharts\n\u5f02\u6b65\u52a0\u8f7d\n\n\n\nECharts\r\n\u6570\u636e\u53ef\u89c6\u5316\u5728\u8fc7\u53bb\u51e0\u5e74\u4e2d\u53d6\u5f97\u4e86\u5de8\u5927\u8fdb\u5c55\u3002\u5f00\u53d1\u4eba\u5458\u5bf9\u53ef\u89c6\u5316\u4ea7\u54c1\u7684\u671f\u671b\u4e0d\u518d\u662f\u7b80\u5355\u7684\u56fe\u8868\u521b\u5efa\u5de5\u5177\uff0c\u800c\u662f\u5728\u4ea4\u4e92\u3001\u6027\u80fd\u3001\u6570\u636e\u5904\u7406\u7b49\u65b9\u9762\u6709\u66f4\u9ad8\u7684\u8981\u6c42\u3002\r\nchart.setOption({\r\n    color: [\r\n        ","username":"milovetingting","tagsname":null,"tagsid":"","catesname":null,"catesid":"","createtime":"1632971339"},"highlight":{"text":["#em#Jetpack#/em#学习-#em#Lifecycle#/em#"]}},{"_index":"likecs_art_db","_type":"_doc","_id":"182271","_score":26.697012,"_source":{"id":"182271","text":"\u94f6\u8054\u652f\u4ed8 - \u5b89\u5353\u7b14\u8bb0\u4fa0","intro":"\u76ee\u5f55\n\nECharts\n\u5f02\u6b65\u52a0\u8f7d\n\n\n\nECharts\r\n\u6570\u636e\u53ef\u89c6\u5316\u5728\u8fc7\u53bb\u51e0\u5e74\u4e2d\u53d6\u5f97\u4e86\u5de8\u5927\u8fdb\u5c55\u3002\u5f00\u53d1\u4eba\u5458\u5bf9\u53ef\u89c6\u5316\u4ea7\u54c1\u7684\u671f\u671b\u4e0d\u518d\u662f\u7b80\u5355\u7684\u56fe\u8868\u521b\u5efa\u5de5\u5177\uff0c\u800c\u662f\u5728\u4ea4\u4e92\u3001\u6027\u80fd\u3001\u6570\u636e\u5904\u7406\u7b49\u65b9\u9762\u6709\u66f4\u9ad8\u7684\u8981\u6c42\u3002\r\nchart.setOption({\r\n    color: [\r\n        ","username":"ganchuanpu","tagsname":null,"tagsid":"","catesname":null,"catesid":"","createtime":"1639637271"},"highlight":{"text":["银联支付 - #em#安#/em##em#卓#/em##em#笔#/em##em#记#/em##em#侠#/em#"]}},{"_index":"likecs_art_db","_type":"_doc","_id":"458690","_score":26.215223,"_source":{"id":"458690","text":"\u817e\u8bafTBS X5 WebView\u7684\u7b80\u5355\u4f7f\u7528 - \u5b89\u5353\u7b14\u8bb0\u4fa0","intro":"\u76ee\u5f55\n\nECharts\n\u5f02\u6b65\u52a0\u8f7d\n\n\n\nECharts\r\n\u6570\u636e\u53ef\u89c6\u5316\u5728\u8fc7\u53bb\u51e0\u5e74\u4e2d\u53d6\u5f97\u4e86\u5de8\u5927\u8fdb\u5c55\u3002\u5f00\u53d1\u4eba\u5458\u5bf9\u53ef\u89c6\u5316\u4ea7\u54c1\u7684\u671f\u671b\u4e0d\u518d\u662f\u7b80\u5355\u7684\u56fe\u8868\u521b\u5efa\u5de5\u5177\uff0c\u800c\u662f\u5728\u4ea4\u4e92\u3001\u6027\u80fd\u3001\u6570\u636e\u5904\u7406\u7b49\u65b9\u9762\u6709\u66f4\u9ad8\u7684\u8981\u6c42\u3002\r\nchart.setOption({\r\n    color: [\r\n        ","username":"ganchuanpu","tagsname":null,"tagsid":"","catesname":null,"catesid":"","createtime":"1633756078"},"highlight":{"text":["腾讯TBS X5 WebView的简单#em#使#/em##em#用#/em# - #em#安#/em##em#卓#/em##em#笔#/em##em#记#/em##em#侠#/em#"]}}]}}"
</pre>string(14) "127.0.0.1:9200"
URL: http://192.168.101.128/searchcore/index.php/cihere_cn_db/_search<br>REQUEST:<pre>Array
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            [pre_tags] => #em#
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</pre>RESPONSE:<pre>bool(false)
</pre>string(14) "127.0.0.1:9200"
URL: http://127.0.0.1:9200/likecs_down_db/_search<br>REQUEST:<pre>Array
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</pre>RESPONSE:<pre>string(2687) "{"took":11,"timed_out":false,"_shards":{"total":1,"successful":1,"skipped":0,"failed":0},"hits":{"total":{"value":7927,"relation":"eq"},"max_score":17.200087,"hits":[{"_index":"likecs_down_db","_type":"_doc","_id":"50039","_score":17.200087,"_source":{"id":"50039","title":"Afinal\u5b89\u5353\u5feb\u901f\u5f00\u53d1\u6846\u67b6 v1.0","spidertime":"1623053822","contenttime":"1674797352","tag":"Afinal|\u5b89\u5353|\u5f00\u53d1\u6846\u67b6","cate1":"\u6e90\u7801\u4e0b\u8f7d","cate2":"\u8f6f\u4ef6\u5f00\u53d1","cate3":"java\u6e90\u7801","attr1":"2.6MB"},"highlight":{"title":["Afinal#em#安#/em##em#卓#/em#快速开发框#em#架#/em# v1.0"]}},{"_index":"likecs_down_db","_type":"_doc","_id":"58066","_score":16.336498,"_source":{"id":"58066","title":"Bootstrap\u7684\u4f7f\u7528\u624b\u518c\u53ca\u5b66\u4e60\u7b14\u8bb0 \u4e2d\u6587WORD\u7248","spidertime":"1623064883","contenttime":"1676796631","pageimage":"https:\/\/img.jbzj.com\/do\/uploads\/litimg\/170108\/09152Ub522.png","tag":"Bootstrap|\u4f7f\u7528\u624b\u518c|\u5b66\u4e60\u7b14\u8bb0","cate1":"\u7535\u5b50\u4e66\u7c4d","cate2":"CSS\u6559\u7a0b","attr1":"28.3KB"},"highlight":{"title":["Bootstrap的#em#使#/em##em#用#/em#手册及学习#em#笔#/em##em#记#/em# 中文WORD版"]}},{"_index":"likecs_down_db","_type":"_doc","_id":"6765","_score":16.336498,"_source":{"id":"6765","title":"Bootstrap\u7684\u4f7f\u7528\u624b\u518c\u53ca\u5b66\u4e60\u7b14\u8bb0 \u4e2d\u6587WORD\u7248","spidertime":"1622872838","contenttime":"1676352126","pageimage":"https:\/\/img.jbzj.com\/do\/uploads\/litimg\/170108\/09152Ub522.png","tag":"Bootstrap|\u4f7f\u7528\u624b\u518c|\u5b66\u4e60\u7b14\u8bb0","cate1":"\u7535\u5b50\u4e66\u7c4d","cate2":"CSS\u6559\u7a0b","attr1":"28.3KB"},"highlight":{"title":["Bootstrap的#em#使#/em##em#用#/em#手册及学习#em#笔#/em##em#记#/em# 中文WORD版"]}},{"_index":"likecs_down_db","_type":"_doc","_id":"68996","_score":15.984712,"_source":{"id":"68996","title":"Spiderman2 \u4e8c\u4ee3\u8718\u86db\u4fa0 v1.0","spidertime":"1623080624","contenttime":"1677768181","tag":"Spiderman2","cate1":"\u6e90\u7801\u4e0b\u8f7d","cate2":"\u8f6f\u4ef6\u5f00\u53d1","cate3":"java\u6e90\u7801","attr1":"26.7MB"},"highlight":{"title":["Spiderman2 #em#二#/em#代蜘蛛#em#侠#/em# v1.0"]}},{"_index":"likecs_down_db","_type":"_doc","_id":"10532","_score":15.984712,"_source":{"id":"10532","title":"Spiderman2 \u4e8c\u4ee3\u8718\u86db\u4fa0 v1.0","spidertime":"1622877663","contenttime":"1622877663","tag":"Spiderman2","cate1":"\u6e90\u7801\u4e0b\u8f7d","cate2":"\u8f6f\u4ef6\u5f00\u53d1","cate3":"java\u6e90\u7801","attr1":"26.7MB"},"highlight":{"title":["Spiderman2 #em#二#/em#代蜘蛛#em#侠#/em# v1.0"]}}]}}"
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		</h3>
		<div id="likecs_post_body" class="blogpost-body blogpost-body-html">
<p>1.直接添加如下依赖就可以满足日常的工作，如果缺少哪个库，再去单独添加就好了</p>
<div class="likecs_code">
<pre>implementation <span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">android.arch.lifecycle:extensions:1.1.1</span><span style="color: rgba(128, 0, 0, 1)">"</span></pre>
</div>
<p>添加这一句代码就依赖了如下的库。<br><a class="gallery-item" title="eXj6eJ.png" href="https://s2.ax1x.com/2019/08/11/eXj6eJ.png" rel="nofollow" target="_blank"><img src="/default/index/img?u=aHR0cHM6Ly9zMi5heDF4LmNvbS8yMDE5LzA4LzExL2VYajZlSi5wbmc%3D" alt="eXj6eJ.png"></a><span class="caption"><br></span></p>
<p><span class="caption">2.先不谈Activity和Fragment中如何使用，先举一个Lifecycle的简单例子。</span></p>
<div class="likecs_code">
<pre><span style="color: rgba(0, 128, 128, 1)"> 1</span> <span style="color: rgba(0, 0, 0, 1)">ackage com.example.lifecycledemo1;
</span><span style="color: rgba(0, 128, 128, 1)"> 2</span> 
<span style="color: rgba(0, 128, 128, 1)"> 3</span> <span style="color: rgba(0, 0, 0, 1)">import android.arch.lifecycle.Lifecycle;
</span><span style="color: rgba(0, 128, 128, 1)"> 4</span> <span style="color: rgba(0, 0, 0, 1)">import android.arch.lifecycle.LifecycleObserver;
</span><span style="color: rgba(0, 128, 128, 1)"> 5</span> <span style="color: rgba(0, 0, 0, 1)">import android.arch.lifecycle.OnLifecycleEvent;
</span><span style="color: rgba(0, 128, 128, 1)"> 6</span> <span style="color: rgba(0, 0, 0, 1)">import android.support.v7.app.AppCompatActivity;
</span><span style="color: rgba(0, 128, 128, 1)"> 7</span> <span style="color: rgba(0, 0, 0, 1)">import android.os.Bundle;
</span><span style="color: rgba(0, 128, 128, 1)"> 8</span> <span style="color: rgba(0, 0, 0, 1)">import android.util.Log;
</span><span style="color: rgba(0, 128, 128, 1)"> 9</span> 
<span style="color: rgba(0, 128, 128, 1)">10</span> <span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">class</span><span style="color: rgba(0, 0, 0, 1)"> MainActivity extends AppCompatActivity {
</span><span style="color: rgba(0, 128, 128, 1)">11</span> 
<span style="color: rgba(0, 128, 128, 1)">12</span>     <span style="color: rgba(0, 0, 255, 1)">private</span> <span style="color: rgba(0, 0, 255, 1)">static</span> final String TAG = <span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">MainActivity</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">;
</span><span style="color: rgba(0, 128, 128, 1)">13</span> 
<span style="color: rgba(0, 128, 128, 1)">14</span> <span style="color: rgba(0, 0, 0, 1)">    @Override
</span><span style="color: rgba(0, 128, 128, 1)">15</span>     <span style="color: rgba(0, 0, 255, 1)">protected</span> <span style="color: rgba(0, 0, 255, 1)">void</span><span style="color: rgba(0, 0, 0, 1)"> onCreate(Bundle savedInstanceState) {
</span><span style="color: rgba(0, 128, 128, 1)">16</span> <span style="color: rgba(0, 0, 0, 1)">        super.onCreate(savedInstanceState);
</span><span style="color: rgba(0, 128, 128, 1)">17</span> <span style="color: rgba(0, 0, 0, 1)">        setContentView(R.layout.activity_main);
</span><span style="color: rgba(0, 128, 128, 1)">18</span>         getLifecycle().addObserver(<span style="color: rgba(0, 0, 255, 1)">new</span> MyObserver());<span style="color: rgba(0, 128, 0, 1)">//</span><span style="color: rgba(0, 128, 0, 1)">1</span>
<span style="color: rgba(0, 128, 128, 1)">19</span> <span style="color: rgba(0, 0, 0, 1)">    }
</span><span style="color: rgba(0, 128, 128, 1)">20</span> 
<span style="color: rgba(0, 128, 128, 1)">21</span>     <span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">class</span><span style="color: rgba(0, 0, 0, 1)"> MyObserver implements LifecycleObserver{
</span><span style="color: rgba(0, 128, 128, 1)">22</span> 
<span style="color: rgba(0, 128, 128, 1)">23</span> <span style="color: rgba(0, 0, 0, 1)">        @OnLifecycleEvent(Lifecycle.Event.ON_RESUME)
</span><span style="color: rgba(0, 128, 128, 1)">24</span>         <span style="color: rgba(0, 0, 255, 1)">void</span><span style="color: rgba(0, 0, 0, 1)"> onResume(){
</span><span style="color: rgba(0, 128, 128, 1)">25</span>             Log.d(TAG, <span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">Lifecycle call onResume</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">);
</span><span style="color: rgba(0, 128, 128, 1)">26</span> <span style="color: rgba(0, 0, 0, 1)">        }
</span><span style="color: rgba(0, 128, 128, 1)">27</span> <span style="color: rgba(0, 0, 0, 1)">        @OnLifecycleEvent(Lifecycle.Event.ON_PAUSE)
</span><span style="color: rgba(0, 128, 128, 1)">28</span>         <span style="color: rgba(0, 0, 255, 1)">void</span><span style="color: rgba(0, 0, 0, 1)"> onPause(){
</span><span style="color: rgba(0, 128, 128, 1)">29</span>             Log.d(TAG, <span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">Lifecycle call onPause</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">);
</span><span style="color: rgba(0, 128, 128, 1)">30</span> <span style="color: rgba(0, 0, 0, 1)">        }
</span><span style="color: rgba(0, 128, 128, 1)">31</span> <span style="color: rgba(0, 0, 0, 1)">    }
</span><span style="color: rgba(0, 128, 128, 1)">32</span> 
<span style="color: rgba(0, 128, 128, 1)">33</span> <span style="color: rgba(0, 0, 0, 1)">    @Override
</span><span style="color: rgba(0, 128, 128, 1)">34</span>     <span style="color: rgba(0, 0, 255, 1)">protected</span> <span style="color: rgba(0, 0, 255, 1)">void</span><span style="color: rgba(0, 0, 0, 1)"> onResume() {
</span><span style="color: rgba(0, 128, 128, 1)">35</span> <span style="color: rgba(0, 0, 0, 1)">        super.onResume();
</span><span style="color: rgba(0, 128, 128, 1)">36</span>         Log.d(TAG, <span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">onResume</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">);
</span><span style="color: rgba(0, 128, 128, 1)">37</span> <span style="color: rgba(0, 0, 0, 1)">    }
</span><span style="color: rgba(0, 128, 128, 1)">38</span> 
<span style="color: rgba(0, 128, 128, 1)">39</span> <span style="color: rgba(0, 0, 0, 1)">    @Override
</span><span style="color: rgba(0, 128, 128, 1)">40</span>     <span style="color: rgba(0, 0, 255, 1)">protected</span> <span style="color: rgba(0, 0, 255, 1)">void</span><span style="color: rgba(0, 0, 0, 1)"> onPause() {
</span><span style="color: rgba(0, 128, 128, 1)">41</span> <span style="color: rgba(0, 0, 0, 1)">        super.onPause();
</span><span style="color: rgba(0, 128, 128, 1)">42</span>         Log.d(TAG, <span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">onPause</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">);
</span><span style="color: rgba(0, 128, 128, 1)">43</span> 
<span style="color: rgba(0, 128, 128, 1)">44</span> <span style="color: rgba(0, 0, 0, 1)">    }
</span><span style="color: rgba(0, 128, 128, 1)">45</span> }</pre>
</div>
<p>先实现MyObserver，对ON_CREATE和ON_RESUME事件进行监听。因为在Android Support Library 26.1.0 及其之后的版本，Activity和Fragment已经默认实现了LifecycleOwner接口，所以在注释1处可以直接使用getLifecycle方法获取Lifecycle对象，这样MyObserver就可以观察MainActivity的生命周期变化了，LifecycleOwner可以理解为被观察者，MainActivity默认实现了LifecycleOwner接口，也就是说MainActivity是被观察者。<br>运行程序，打印的log如下所示。</p>
<div class="likecs_Highlighter">
<pre class="brush:csharp;gutter:true;">D/MainActivity: onResume
D/MainActivity: Lifecycle call onResume
D/MainActivity: Lifecycle call onPause
D/MainActivity: onPause
</pre>
</div>
<p>3.MVP的例子</p>
<div class="likecs_code">
<pre><span style="color: rgba(0, 128, 128, 1)"> 1</span> <span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">class</span><span style="color: rgba(0, 0, 0, 1)"> MyPresenter implements IPresenter {
</span><span style="color: rgba(0, 128, 128, 1)"> 2</span>     <span style="color: rgba(0, 0, 255, 1)">private</span> <span style="color: rgba(0, 0, 255, 1)">static</span> final String TAG = <span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">test</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">;
</span><span style="color: rgba(0, 128, 128, 1)"> 3</span> 
<span style="color: rgba(0, 128, 128, 1)"> 4</span> <span style="color: rgba(0, 0, 0, 1)">    @Override
</span><span style="color: rgba(0, 128, 128, 1)"> 5</span>     <span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">void</span><span style="color: rgba(0, 0, 0, 1)"> onResume() {
</span><span style="color: rgba(0, 128, 128, 1)"> 6</span>         Log.d(TAG, <span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">Lifecycle call onResume</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">);
</span><span style="color: rgba(0, 128, 128, 1)"> 7</span> <span style="color: rgba(0, 0, 0, 1)">    }
</span><span style="color: rgba(0, 128, 128, 1)"> 8</span> 
<span style="color: rgba(0, 128, 128, 1)"> 9</span> <span style="color: rgba(0, 0, 0, 1)">    @Override
</span><span style="color: rgba(0, 128, 128, 1)">10</span>     <span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">void</span><span style="color: rgba(0, 0, 0, 1)"> onPause() {
</span><span style="color: rgba(0, 128, 128, 1)">11</span>         Log.d(TAG, <span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">Lifecycle call onPause</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">);
</span><span style="color: rgba(0, 128, 128, 1)">12</span> <span style="color: rgba(0, 0, 0, 1)">    }
</span><span style="color: rgba(0, 128, 128, 1)">13</span> <span style="color: rgba(0, 0, 0, 1)">}
</span><span style="color: rgba(0, 128, 128, 1)">14</span> 
<span style="color: rgba(0, 128, 128, 1)">15</span> <span style="color: rgba(0, 0, 255, 1)">interface</span><span style="color: rgba(0, 0, 0, 1)"> IPresenter extends LifecycleObserver {
</span><span style="color: rgba(0, 128, 128, 1)">16</span> 
<span style="color: rgba(0, 128, 128, 1)">17</span> <span style="color: rgba(0, 0, 0, 1)">    @OnLifecycleEvent(Lifecycle.Event.ON_RESUME)
</span><span style="color: rgba(0, 128, 128, 1)">18</span>     <span style="color: rgba(0, 0, 255, 1)">void</span><span style="color: rgba(0, 0, 0, 1)"> onResume();
</span><span style="color: rgba(0, 128, 128, 1)">19</span> 
<span style="color: rgba(0, 128, 128, 1)">20</span> <span style="color: rgba(0, 0, 0, 1)">    @OnLifecycleEvent(Lifecycle.Event.ON_PAUSE)
</span><span style="color: rgba(0, 128, 128, 1)">21</span>     <span style="color: rgba(0, 0, 255, 1)">void</span><span style="color: rgba(0, 0, 0, 1)"> onPause();
</span><span style="color: rgba(0, 128, 128, 1)">22</span> }</pre>
</div>
<p>IPresenter接口继承自LifecycleObserver接口，MyPresenter又实现了IPresenter接口，这样MyPresenter成为了一个观察者。<br>接在在MainActivity中加入MyPresenter：</p>
<div class="likecs_code">
<pre><span style="color: rgba(0, 128, 128, 1)"> 1</span> <span style="color: rgba(0, 0, 255, 1)">public</span> <span style="color: rgba(0, 0, 255, 1)">class</span><span style="color: rgba(0, 0, 0, 1)"> MainActivity extends AppCompatActivity {
</span><span style="color: rgba(0, 128, 128, 1)"> 2</span> 
<span style="color: rgba(0, 128, 128, 1)"> 3</span>     <span style="color: rgba(0, 0, 255, 1)">private</span> <span style="color: rgba(0, 0, 255, 1)">static</span> final String TAG = <span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">test</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">;
</span><span style="color: rgba(0, 128, 128, 1)"> 4</span>     <span style="color: rgba(0, 0, 255, 1)">private</span><span style="color: rgba(0, 0, 0, 1)"> IPresenter mPresenter;
</span><span style="color: rgba(0, 128, 128, 1)"> 5</span> <span style="color: rgba(0, 0, 0, 1)">    @Override
</span><span style="color: rgba(0, 128, 128, 1)"> 6</span>     <span style="color: rgba(0, 0, 255, 1)">protected</span> <span style="color: rgba(0, 0, 255, 1)">void</span><span style="color: rgba(0, 0, 0, 1)"> onCreate(Bundle savedInstanceState) {
</span><span style="color: rgba(0, 128, 128, 1)"> 7</span> <span style="color: rgba(0, 0, 0, 1)">        super.onCreate(savedInstanceState);
</span><span style="color: rgba(0, 128, 128, 1)"> 8</span> <span style="color: rgba(0, 0, 0, 1)">        setContentView(R.layout.activity_main);
</span><span style="color: rgba(0, 128, 128, 1)"> 9</span>         mPresenter = <span style="color: rgba(0, 0, 255, 1)">new</span><span style="color: rgba(0, 0, 0, 1)"> MyPresenter();
</span><span style="color: rgba(0, 128, 128, 1)">10</span> <span style="color: rgba(0, 0, 0, 1)">        getLifecycle().addObserver(mPresenter);
</span><span style="color: rgba(0, 128, 128, 1)">11</span> <span style="color: rgba(0, 0, 0, 1)">    }
</span><span style="color: rgba(0, 128, 128, 1)">12</span> 
<span style="color: rgba(0, 128, 128, 1)">13</span> <span style="color: rgba(0, 0, 0, 1)">    @Override
</span><span style="color: rgba(0, 128, 128, 1)">14</span>     <span style="color: rgba(0, 0, 255, 1)">protected</span> <span style="color: rgba(0, 0, 255, 1)">void</span><span style="color: rgba(0, 0, 0, 1)"> onResume() {
</span><span style="color: rgba(0, 128, 128, 1)">15</span> <span style="color: rgba(0, 0, 0, 1)">        super.onResume();
</span><span style="color: rgba(0, 128, 128, 1)">16</span>         Log.d(TAG, <span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">onResume</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">);
</span><span style="color: rgba(0, 128, 128, 1)">17</span> <span style="color: rgba(0, 0, 0, 1)">    }
</span><span style="color: rgba(0, 128, 128, 1)">18</span> 
<span style="color: rgba(0, 128, 128, 1)">19</span> <span style="color: rgba(0, 0, 0, 1)">    @Override
</span><span style="color: rgba(0, 128, 128, 1)">20</span>     <span style="color: rgba(0, 0, 255, 1)">protected</span> <span style="color: rgba(0, 0, 255, 1)">void</span><span style="color: rgba(0, 0, 0, 1)"> onPause() {
</span><span style="color: rgba(0, 128, 128, 1)">21</span> <span style="color: rgba(0, 0, 0, 1)">        super.onPause();
</span><span style="color: rgba(0, 128, 128, 1)">22</span>         Log.d(TAG, <span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(128, 0, 0, 1)">onPause</span><span style="color: rgba(128, 0, 0, 1)">"</span><span style="color: rgba(0, 0, 0, 1)">);
</span><span style="color: rgba(0, 128, 128, 1)">23</span> 
<span style="color: rgba(0, 128, 128, 1)">24</span> <span style="color: rgba(0, 0, 0, 1)">    }
</span><span style="color: rgba(0, 128, 128, 1)">25</span> }</pre>
</div>
<p>MainActivity成为了被观察者，当它的生命周期发生变化时，MyPresenter就可以观察到，这样就不需要在MainActivity的多个生命周期方法中调用MyPresenter的方法了。<br>打印的日志如下：</p>
<div class="likecs_Highlighter">
<pre class="brush:csharp;gutter:true;">D/test: onResume
D/test: Lifecycle call onResume
D/test: Lifecycle call onPause
D/test: onPause
</pre>
</div>
<p>　　</p>
<p> </p>
<p>　　</p>
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