Customized Android crash reporting library and background system based on open-source project Acra

Starting point:Open-source Acra crash reporting Library (http://code.google.com/p/acra/) Disadvantages: 1. Crash reported to Google doc, because of the wall, so do not see the data. 2. If the crash is reported by email, it is not convenient to calculate the crash rate. 3. There are too many fields reported by AcrA. You need to filter useless fields.
Purpose:When the android application crashes, you can view the collapsed stack information in the browser in time, and the background can also calculate the daily crash rate to facilitate application experience improvement.
Practice process:
1. First download the Acra source code SVN checkout http://acra.googlecode.com/svn/trunk, import the project in eclipse, in AcrA. Java found that the default reported field content are:

public static final ReportField[] DEFAULT_REPORT_FIELDS = { REPORT_ID, APP_VERSION_CODE, APP_VERSION_NAME,PACKAGE_NAME, FILE_PATH, PHONE_MODEL, BRAND, PRODUCT, ANDROID_VERSION, BUILD, TOTAL_MEM_SIZE,AVAILABLE_MEM_SIZE, CUSTOM_DATA, IS_SILENT, STACK_TRACE, INITIAL_CONFIGURATION, CRASH_CONFIGURATION,DISPLAY, USER_COMMENT, USER_EMAIL, USER_APP_START_DATE, USER_CRASH_DATE, DUMPSYS_MEMINFO, LOGCAT,DEVICE_ID, INSTALLATION_ID, DEVICE_FEATURES, ENVIRONMENT, SHARED_PREFERENCES, SETTINGS_SYSTEM,SETTINGS_SECURE };

2. filter out useless fields. When the android application crashes, only 11 fields need to be counted, as shown below:
Field description

Field	Description
Platform_id	1 = apad, 2 = aphone
Android_version	Android version
App_version_code	The application version code is as follows: 9
App_version_name	The application version name is 1.2.2.
Device_id	Unique device ID
Model	Mobile phone/tablet models, such as bcm63
Brand	Android device brand, such as Samsung
Product	Android product information
Stack_trace	Collapsed stack information
Crash_date	Crash time point
Package_name	Application Package name

Firgure 1 reported field
Add the ing of reported fields in Figure1 to the addreportsenders function in AcrA. Java:

if (conf.formUri() != null && !"".equals(conf.formUri())) {Map<ReportField, String> mapField = new HashMap<ReportField,String>();mapField.put(ReportField.ANDROID_VERSION, "android_version");mapField.put(ReportField.APP_VERSION_CODE, "app_version_code");mapField.put(ReportField.APP_VERSION_NAME, "app_version_name");mapField.put(ReportField.DEVICE_ID, "device_id");mapField.put(ReportField.PHONE_MODEL, "model");mapField.put(ReportField.BRAND, "brand");mapField.put(ReportField.PRODUCT, "product");mapField.put(ReportField.STACK_TRACE, "stack_trace");mapField.put(ReportField.USER_CRASH_DATE, "crash_date");mapField.put(ReportField.PACKAGE_NAME, "package_name");errorReporter.addReportSender(new HttpPostSender(conf.formUri(), mapField));return;}

Modify the remap function in httppostsender. Java as follows:

for (ReportField field : fields) {/* if (mMapping == null || mMapping.get(field) == null) {finalReport.put(field.toString(), report.get(field));} else {finalReport.put(mMapping.get(field), report.get(field));}*/if(mMapping!=null && mMapping.get(field) != null){finalReport.put(mMapping.get(field), report.get(field));}}

Finalreport. Put ("platform_id", AcrA. getconfig (). platformid ());

3. After modification, you only need to add the following lines of code to the application to report the collapsed stack information in real time (this is more convenient than the iOS platform)

@ReportsCrashes(formKey = "", // will not be usedplatformId="1",formUriBasicAuthLogin = "user",formUriBasicAuthPassword = "password",formUri = "http://weiwangzi.com:8080/CrashReport/CrashServerlet")public class TestApplication extends Application {@Overridepublic void onCreate() {// TODO Auto-generated method stubsuper.onCreate();ACRA.init(this);}

4. Implement serverlet to collect the reported crash data to the database

public void doPost(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {Connection conn = null;PreparedStatement pstmt = null;try{conn = DBUtil.getConnection();String platformId=request.getParameter("platform_id");String androidVersion=request.getParameter("android_version");String appVersionCode=request.getParameter("app_version_code");String appVersionName=request.getParameter("app_version_name");String deviceId=request.getParameter("device_id");String model=request.getParameter("model");String brand=request.getParameter("brand");String product=request.getParameter("product");String stackTrace=request.getParameter("stack_trace");String crashDate=request.getParameter("crash_date");String packageName=request.getParameter("package_name");pstmt = conn.prepareStatement("insert into report(platform_id, android_version, app_version_code,appversion_name,device_id,model,brand,product,stack_trace,crash_date,package_name) values (?, ?, ?,?,?,?,?,?,?,?,?)");pstmt.setString(1, platformId);pstmt.setString(2, androidVersion);pstmt.setString(3, appVersionCode);pstmt.setString(4, appVersionName);pstmt.setString(5, deviceId);pstmt.setString(6, model);pstmt.setString(7, brand);pstmt.setString(8, product);pstmt.setString(9, stackTrace);pstmt.setString(10, crashDate);pstmt.setString(11, packageName);pstmt.executeUpdate();}catch(Exception e){e.printStackTrace();}finally{if(pstmt!=null){try {pstmt.close();} catch (SQLException e) {// TODO Auto-generated catch block//e.printStackTrace();}}if(conn!=null){try {conn.close();} catch (SQLException e) {// TODO Auto-generated catch block//e.printStackTrace();}}}}

Practice:You can use a database to export an Excel crash report, or directly view the report in a browser.