ANDROID開發之問題積累及解決方案（不斷更新）

標籤：

一、activity跳轉及傳值

　　當進行activity之間的跳轉時我們會遇到這樣的問題。首先熟悉下activity之間跳轉。Activity跳轉與傳值，主要是通過Intent類來串連多個Activity，以及傳遞資料。幾種跳轉方式可參照Android之Activity的幾種跳轉方式和Activity的跳轉與傳值，下面來說說開發時遇到的錯誤。

1、Internal Server error

　　在開發工程時，有6個activity，又新增一個activity，這個activity有listview，目的是從這個新增的activity點擊item跳轉到另外的6個activity，如下代碼：

public void onItemClick(AdapterView<?> parent, View view, int position, long id) {                //這裡做跳轉，跳轉到各自對應的頁                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，運行程式時，程式在點擊跳轉時報Internal Server error錯誤，直譯為“內部伺服器錯誤”，所以錯就在Manifest.xml了，就讓我們認識下它吧AndroidManifest.xml設定檔詳解 ，仔細查看Manifest.xml，確認是正確的，這就納悶了~~哪裡的錯了？？？順手點了根煙，邊抽邊想，這個調的web介面啊，或許是參數不對，抽完馬上查看，果然是這裡的問題，立馬給它傳個參數。

public void onItemClick(AdapterView<?> parent, View view, int position, long id) {                //這裡做跳轉，跳轉到各自對應的頁                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，這樣一debug，果然調方法了，此問題完美解決。

ANDROID開發之問題積累及解決方案（不斷更新）