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。
时间: 2024-09-30 05:12:39