Android实现捕获未知异常并提交给服务器的方法
本文实例讲述了Android实现捕获未知异常并提交给服务器的方法。分享给大家供大家参考，具体如下：
在Android应用中，即便应用已经投放市场，但有时也会遇到一些未知的异常，此时如果能够获得用户的反馈信息，那么对于我们应用的开发是一个很好的帮助
为了实现这样的效果，我们需要做如下工作
写一个类实现UncaughtExceptionHandler接口，重写uncaughtException方法
功能描述：当应用出现了未知异常，应用强制退出，应用再次启动时，提示用户是否将错误信息反馈给开发者
publicclassMyUncaughtExceptionHandlerimplementsUncaughtExceptionHandler{
privatestaticfinalStringTAG="MyUncaughtExceptionHandler";
//将错误信息保存到sharepreference中
privatestaticSharedPreferencesbugPreferences;
privatestaticSharedPreferences.EditorbugEditor;
privatestaticContextmContext;
privatestaticPackageInfopackageInfo;
privateUncaughtExceptionHandlerdefaultUncaughtExceptionHandler;
privatestaticHandleProgressDialogprogressDialog;
//保存错误原因的字段
privatestaticStringbugExistStr="";
privatestaticHandlerhandler=newHandler(){
@Override
publicvoidhandleMessage(Messagemsg){
progressDialog.dismiss();
}
};
publicMyUncaughtExceptionHandler(Contextcontext){
try{
mContext=context;
packageInfo=context.getPackageManager().getPackageInfo(
context.getPackageName(),0);
bugPreferences=context.getSharedPreferences("bug",0);
bugEditor=bugPreferences.edit();
defaultUncaughtExceptionHandler=Thread
.getDefaultUncaughtExceptionHandler();
}catch(NameNotFoundExceptione){
e.printStackTrace();
}catch(Exceptione){
e.printStackTrace();
}
}
//当异常发生时，会调用这个方法
publicvoiduncaughtException(Threadth,Throwablet){
try{
//保存bug
saveBugText(t);
defaultUncaughtExceptionHandler.uncaughtException(th,t);
}catch(FileNotFoundExceptione){
e.printStackTrace();
}catch(Exceptione){
e.printStackTrace();
}
}
privatevoidsaveBugText(Throwableex)throwsFileNotFoundException{
Writerwriter=newStringWriter();
PrintWriterprintWriter=newPrintWriter(writer);
ex.printStackTrace(printWriter);
Throwablecause=ex.getCause();
while(cause!=null){
cause.printStackTrace(printWriter);
cause=cause.getCause();
}
printWriter.close();
bugEditor.putString("bugText",writer.toString());
bugEditor.commit();
}
//下次开启应用的时候，如果上次产生了未知异常则显示对话框应用与用户反馈
publicstaticvoidshowBugReportDialog(finalContextcontext){
bugExistStr=context.getSharedPreferences("bug",0).getString(
"bugText","");
if(bugExistStr!=null&&!bugExistStr.equals("")){
AlertDialog.Builderbuilder=newAlertDialog.Builder(context);
builder.setTitle(R.string.bug_report);
builder.setMessage(R.string.whether_report_to_developer);
builder.setNegativeButton(R.string.cancel,newOnClickListener(){
publicvoidonClick(DialogInterfacedialog,intwhich){
finish(dialog);
}
});
builder.setPositiveButton(R.string.send,newOnClickListener(){
publicvoidonClick(DialogInterfacedialog,intwhich){
//提交bug到服务器
postBugReportInBackground(context);
dialog.dismiss();
}
});
AlertDialogdialog=builder.create();
dialog.show();
}
}
privatestaticvoidpostBugReportInBackground(finalContextcontext){
progressDialog=newHandleProgressDialog(context);
progressDialog.show();
newThread(newRunnable(){
publicvoidrun(){
postBugReport();
//将之前的bug信息清除掉
if(bugExistStr!=null){
bugEditor.putString("bugText","");
bugEditor.commit();
}
handler.sendEmptyMessage(0);
}
}).start();
}
/**
*SendBugReport.
*/
privatestaticvoidpostBugReport(){
List<NameValuePair>nvps=newArrayList<NameValuePair>();
nvps.add(newBasicNameValuePair("device",Build.DEVICE));
nvps.add(newBasicNameValuePair("model",Build.MODEL));
nvps.add(newBasicNameValuePair("sdk-version",Build.VERSION.SDK));
nvps.add(newBasicNameValuePair("apk-version",packageInfo.versionName));
nvps.add(newBasicNameValuePair("bug",bugExistStr));
try{
HttpPosthttpPost=newHttpPost(Constants.BaseUrl
+"c=main&a=androidCrash");
httpPost.setEntity(newUrlEncodedFormEntity(nvps,HTTP.UTF_8));
DefaultHttpClienthttpClient=newDefaultHttpClient();
HttpParamsparams=httpClient.getParams();
HttpConnectionParams.setConnectionTimeout(params,5000);
HttpConnectionParams.setSoTimeout(params,5000);
httpClient.execute(httpPost);
}catch(IOExceptione){
e.printStackTrace();
}catch(Exceptione){
e.printStackTrace();
}
}
privatestaticvoidfinish(DialogInterfacedialog){
if(bugExistStr!=null){
bugEditor.putString("bugText","");
bugEditor.commit();
}
dialog.dismiss();
}
}
在需要捕捉异常的地方调用
@Override
protectedvoidonCreate(BundlesavedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
appApplication=(APPApplication)getApplication();
appApplication.activites.add(this);
initViews();
Thread.setDefaultUncaughtExceptionHandler(newMyUncaughtExceptionHandler(
MainActivity.this));
MyUncaughtExceptionHandler.showBugReportDialog(this);
}
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希望本文所述对大家Android程序设计有所帮助。