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一、activity跳转及传值
当进行activity之间的跳转时我们会遇到这样的问题。首先熟悉下activity之间跳转。Activity跳转与传值，主要是通过Intent类来连接多个Activity，以及传递数据。几种跳转方式可参照Android之Activity的几种跳转方式和Activity的跳转与传值，下面来说说开发时遇到的错误。
1、Internal Server error
在开发工程时，有6个activity，又新增一个activity，这个activity有listview，目的是从这个新增的activity点击item跳转到另外的6个activity，如下代码：
public void onItemClick(AdapterView<?> parent, View view, int position, long id) { //这里做跳转，跳转到各自对应的页 switch (position) { case 1: openActivity(TariffMajorGoodsListActivity.class); break; case 2: openActivity(TariffNativeDirectoryListActivity.class); break; case 3: openActivity(TariffTaxRateListActivity.class); break; case 4: openActivity(TariffCommentaryListActivity.class); break; case 5: openActivity(ClassifyDecisionListActivity.class); break; case 6: openActivity(ClassifyAdjudicationListActivity.class); break; default: break; } }
protected void openActivity(Class<?> pClass) { openActivity(pClass, null); } protected void openActivity(Class<?> pClass, Bundle pBundle) { Intent intent = new Intent(this, pClass); if (pBundle != null) { intent.putExtras(pBundle); } startActivity(intent); } protected void openActivity(String pAction) { openActivity(pAction, null); } protected void openActivity(String pAction, Bundle pBundle) { Intent intent = new Intent(pAction); if (pBundle != null) { intent.putExtras(pBundle); } startActivity(intent); }
然而，运行程序时，程序在点击跳转时报Internal Server error错误，直译为“内部服务器错误”，所以错就在Manifest.xml了，就让我们认识下它吧AndroidManifest.xml配置文件详解 ，仔细查看Manifest.xml，确认是正确的，这就纳闷了~~哪里的错了？？？顺手点了根烟，边抽边想，这个调的web接口啊，或许是参数不对，抽完马上查看，果然是这里的问题，立马给它传个参数。
public void onItemClick(AdapterView<?> parent, View view, int position, long id) { //这里做跳转，跳转到各自对应的页 Bundle mBundle = new Bundle(); Gson gson = new Gson(); switch (position) { case 1: MajorGoodsEntity majorGoodsEntity = new MajorGoodsEntity(null,datatotal,null,datatotal,null, null, null, null); mBundle.putSerializable("majorGoods", majorGoodsEntity); openActivity(TariffMajorGoodsListActivity.class,mBundle); break; case 2: NativeDirectoryEntity directoryEntity = new NativeDirectoryEntity(null,datatotal); mBundle.putSerializable("nativeDirectory", directoryEntity); openActivity(TariffNativeDirectoryListActivity.class,mBundle); break; case 3: TariffEntity queryEntity = new TariffEntity(null, datatotal,null, null, null, null, null, null, null, null); mBundle.putSerializable("tariffQueryEntity", gson.toJson(queryEntity,TariffEntity.class)); openActivity(TariffTaxRateListActivity.class,mBundle); break; case 4: TariffCommentaryItemEntity commentaryItemEntity = new TariffCommentaryItemEntity(null, datatotal, null, null,null); mBundle.putSerializable("commentaryItemEntity",commentaryItemEntity); openActivity(TariffCommentaryListActivity.class,mBundle); break; case 5: ClassifyPublicationEntity entity =new ClassifyPublicationEntity("D",null, datatotal, null, null,null, null, null, null); mBundle.putSerializable("conditionJSON", gson.toJson(entity, ClassifyPublicationEntity.class)); openActivity(ClassifyDecisionListActivity.class,mBundle); break; case 6: ClassifyPublicationEntity entitys =new ClassifyPublicationEntity("R",null,datatotal,null,null,null,null,null, null); mBundle.putSerializable("conditionJSON", gson.toJson(entitys, ClassifyPublicationEntity.class)); openActivity(ClassifyAdjudicationListActivity.class,mBundle); break; default: break; } }
哈哈，这样一debug，果然调方法了，此问题完美解决。
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原文地址：http://www.cnblogs.com/squirrel-king/p/5231057.html
