开源中国的异常捕获的处理类在AppException.java中，产生的堆栈信息不是太详细，尤其是没有到底是在哪行出错的。这样对于查看修改bug还是增加了工作量，这里对异常的堆栈信息修改了一下，经过实际测试，能够正确的显示是哪个类，哪行出的问题。
关键的代码是:
public static StringBuffer getTraceInfo(Activity a, Throwable e) {
StringBuffer sb = new StringBuffer(); StackTraceElement[] stacks = e.getCause().getStackTrace(); for (int i = 0; i < stacks.length; i++) { if (stacks[i].getClassName().contains(a.getLocalClassName())) { sb.append("class: ").append(stacks[i].getClassName()).append("; method: ") .append(stacks[i].getMethodName()).append("; line: ").append(stacks[i].getLineNumber()) .append("; Exception: ").append(e.getCause().toString()); break; } } return sb; }完整的类内容如下：
package com.childapp.exception;
import java.io.File;
import java.io.FileWriter; import java.io.IOException; import java.io.PrintWriter; import java.lang.Thread.UncaughtExceptionHandler; import java.lang.reflect.Field; import java.net.ConnectException; import java.net.SocketException; import java.net.UnknownHostException; import java.util.Date;import org.apache.commons.httpclient.HttpException;
import org.json.JSONException; import org.json.JSONObject;import android.app.Activity;
import android.content.Context; import android.content.pm.PackageInfo; import android.content.pm.PackageManager; import android.content.pm.PackageManager.NameNotFoundException; import android.os.Build; import android.os.Environment; import android.os.Looper; import android.text.format.DateFormat; import android.util.Log; import android.widget.Toast;import com.childapp.R;
import com.childapp.common.AppApplication; import com.childapp.common.AppManager; import com.childapp.common.GlobalConstants; import com.childapp.utils.UIHelper;/**
* 应用程序异常类：用于捕获异常和提示错误信息 * * liux () * 1.0 * 2012-3-21 */ public class AppException extends Exception implements UncaughtExceptionHandler {/**
* */ private static final long serialVersionUID = 6243307165131877535L;private final static boolean Debug = false;// 是否保存错误日志
/** 定义异常类型 */
public final static byte TYPE_NETWORK = 0x01; public final static byte TYPE_SOCKET = 0x02; public final static byte TYPE_HTTP_CODE = 0x03; public final static byte TYPE_HTTP_ERROR = 0x04; public final static byte TYPE_XML = 0x05; public final static byte TYPE_IO = 0x06; public final static byte TYPE_RUN = 0x07;private byte type;
private int code;/** 系统默认的UncaughtException处理类 */
private Thread.UncaughtExceptionHandler mDefaultHandler;private AppException() {
this.mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler(); }private AppException(byte type, int code, Exception excp) {
super(excp); this.type = type; this.code = code; if (Debug) { this.saveErrorLog(excp); } }public int getCode() {
return this.code; }public int getType() {
return this.type; }/**
* 提示友好的错误信息 * * @param ctx */ public void makeToast(Context ctx) { switch (this.getType()) { case TYPE_HTTP_CODE: String err = ctx.getString(R.string.http_status_code_error, this.getCode()); Toast.makeText(ctx, err, Toast.LENGTH_SHORT).show(); break; case TYPE_HTTP_ERROR: Toast.makeText(ctx, R.string.http_exception_error, Toast.LENGTH_SHORT).show(); break; case TYPE_SOCKET: Toast.makeText(ctx, R.string.socket_exception_error, Toast.LENGTH_SHORT).show(); break; case TYPE_NETWORK: Toast.makeText(ctx, R.string.network_not_connected, Toast.LENGTH_SHORT).show(); break; case TYPE_XML: Toast.makeText(ctx, R.string.xml_parser_failed, Toast.LENGTH_SHORT).show(); break; case TYPE_IO: Toast.makeText(ctx, R.string.io_exception_error, Toast.LENGTH_SHORT).show(); break; case TYPE_RUN: Toast.makeText(ctx, R.string.app_run_code_error, Toast.LENGTH_SHORT).show(); break; } }/**
* 保存异常日志 * * @param excp */ public void saveErrorLog(Exception excp) { saveErrorLog(excp.getLocalizedMessage()); }/**
* 保存异常日志 * * @param excp */ public void saveErrorLog(String excpMessage) { String errorlog = "errorlog.txt"; String savePath = ""; String logFilePath = ""; FileWriter fw = null; PrintWriter pw = null; try { // 判断是否挂载了SD卡 String storageState = Environment.getExternalStorageState(); if (storageState.equals(Environment.MEDIA_MOUNTED)) { savePath = Environment.getExternalStorageDirectory().getAbsolutePath() + File.separator + GlobalConstants.FOLDER_ROOT + File.separator + "Log/"; File file = new File(savePath); if (!file.exists()) { file.mkdirs(); } logFilePath = savePath + errorlog; } // 没有挂载SD卡，无法写文件 if (logFilePath == "") { return; } File logFile = new File(logFilePath); if (!logFile.exists()) { logFile.createNewFile(); } fw = new FileWriter(logFile, true); pw = new PrintWriter(fw); pw.println("--------------------" + (DateFormat.format("yyyy-MM-dd hh:mm:ss", new Date())) + "---------------------"); pw.println(excpMessage); pw.close(); fw.close(); } catch (Exception e) { Log.e("AppException", "[Exception]" + e.getLocalizedMessage()); } finally { if (pw != null) { pw.close(); } if (fw != null) { try { fw.close(); } catch (IOException e) {} } }}
public static AppException http(int code) {
return new AppException(TYPE_HTTP_CODE, code, null); }public static AppException http(Exception e) {
return new AppException(TYPE_HTTP_ERROR, 0, e); }public static AppException socket(Exception e) {
return new AppException(TYPE_SOCKET, 0, e); }public static AppException io(Exception e) {
if (e instanceof UnknownHostException || e instanceof ConnectException) { return new AppException(TYPE_NETWORK, 0, e); } else if (e instanceof IOException) { return new AppException(TYPE_IO, 0, e); } return run(e); }public static AppException xml(Exception e) {
return new AppException(TYPE_XML, 0, e); }public static AppException network(Exception e) {
if (e instanceof UnknownHostException || e instanceof ConnectException) { return new AppException(TYPE_NETWORK, 0, e); } else if (e instanceof HttpException) { return http(e); } else if (e instanceof SocketException) { return socket(e); } return http(e); }public static AppException run(Exception e) {
return new AppException(TYPE_RUN, 0, e); }/**
* 获取APP异常崩溃处理对象 * * @param context * */ public static AppException getAppExceptionHandler() { return new AppException(); }@Override
public void uncaughtException(Thread thread, Throwable ex) {if (!handleException(ex) && mDefaultHandler != null) {
mDefaultHandler.uncaughtException(thread, ex); } else { try { Thread.sleep(15000); } catch (InterruptedException e) { Log.e("AppException", "error : ", e); } // 退出程序 android.os.Process.killProcess(android.os.Process.myPid()); System.exit(1); }}
/**
* 自定义异常处理:收集错误信息&发送错误报告 * * @param ex * true:处理了该异常信息;否则返回false */ private boolean handleException(Throwable ex) { if (ex == null) { return false; }final Context context = AppManager.getAppManager().currentActivity();
if (context == null) {
return false; }final String crashReport = getCrashReport(context, ex);
// 显示异常信息&发送报告 new Thread() { public void run() { Looper.prepare(); UIHelper.sendAppCrashReport(context, crashReport); Looper.loop(); }}.start();
saveErrorLog(crashReport);
return true;
}/**
* 获取APP崩溃异常报告 * * @param ex * */ private String getCrashReport(Context context, Throwable ex) { PackageInfo pinfo = ((AppApplication) context.getApplicationContext()).getPackageInfo(); StringBuffer exceptionStr = new StringBuffer(); exceptionStr.append("Version: " + pinfo.versionName + "(" + pinfo.versionCode + ")\n"); exceptionStr.append("Android: " + android.os.Build.VERSION.RELEASE + "(" + android.os.Build.MODEL + ")\n"); exceptionStr.append("System package Info:" + collectDeviceInfo(context) + "\n"); exceptionStr.append("System os Info:" + getMobileInfo() + "\n"); exceptionStr.append("Exception: " + ex.getMessage() + "\n"); exceptionStr.append("Exception stack：" + getTraceInfo((Activity) context, ex) + "\n"); StackTraceElement[] elements = ex.getStackTrace(); for (int i = 0; i < elements.length; i++) { exceptionStr.append(elements[i].toString() + "\n"); } return exceptionStr.toString(); }/**
* 收集设备参数信息 * * @param ctx */ public String collectDeviceInfo(Context ctx) { StringBuilder sb = new StringBuilder(); JSONObject activePackageJson = new JSONObject();try {
PackageManager pm = ctx.getPackageManager(); PackageInfo pi = pm.getPackageInfo(ctx.getPackageName(), PackageManager.GET_ACTIVITIES); if (pi != null) { String versionName = pi.versionName == null ? "null" : pi.versionName; String versionCode = pi.versionCode + "";activePackageJson.put("versionName", versionName);
activePackageJson.put("versionCode", versionCode); } } catch (NameNotFoundException e) { Log.e("AppException", "an error occured when collect package info", e); } catch (JSONException e) { Log.e("AppException", "jsonException", e); } sb.append("[active Package]"); sb.append(activePackageJson.toString());return sb.toString();
}public static StringBuffer getTraceInfo(Activity a, Throwable e) {
StringBuffer sb = new StringBuffer(); StackTraceElement[] stacks = e.getCause().getStackTrace(); for (int i = 0; i < stacks.length; i++) { if (stacks[i].getClassName().contains(a.getLocalClassName())) { sb.append("class: ").append(stacks[i].getClassName()).append("; method: ") .append(stacks[i].getMethodName()).append("; line: ").append(stacks[i].getLineNumber()) .append("; Exception: ").append(e.getCause().toString()); break; } } return sb; }/**
* 获取手机的硬件信息 * * */ public String getMobileInfo() { JSONObject osJson = new JSONObject(); // 通过反射获取系统的硬件信息Field[] fields = Build.class.getDeclaredFields();
for (Field field : fields) { try { field.setAccessible(true); osJson.put(field.getName(), field.get(null).toString()); Log.d("AppException", field.getName() + " : " + field.get(null)); } catch (Exception e) { Log.e("AppException", "an error occured when collect crash info", e); } }return osJson.toString();
}}
时隔多日，发现上面的还是有些问题，进行了再次的优化，堆栈信息打的更加好了。代码如下：
import java.io.File;
import java.io.FileWriter; import java.io.IOException; import java.io.PrintWriter; import java.lang.Thread.UncaughtExceptionHandler; import java.lang.reflect.Field; import java.net.ConnectException; import java.net.SocketException; import java.net.UnknownHostException; import java.util.Date;import org.apache.commons.httpclient.HttpException;
import org.json.JSONException; import org.json.JSONObject;import android.app.Activity;
import android.content.Context; import android.content.pm.PackageInfo; import android.content.pm.PackageManager; import android.content.pm.PackageManager.NameNotFoundException; import android.os.Build; import android.os.Environment; import android.os.Looper; import android.text.format.DateFormat; import android.util.Log; import android.widget.Toast;import com.childapp.R;
import com.childapp.common.AppApplication; import com.childapp.common.AppManager; import com.childapp.common.GlobalConstants; import com.childapp.utils.UIHelper;/**
* 应用程序异常类：用于捕获异常和提示错误信息 * * @author liux () * @version 1.0 * @created 2012-3-21 */ public class AppException extends Exception implements UncaughtExceptionHandler {/**
* */ private static final long serialVersionUID = 6243307165131877535L;private final static boolean Debug = true;// 是否保存错误日志
/** 定义异常类型 */
public final static byte TYPE_NETWORK = 0x01; public final static byte TYPE_SOCKET = 0x02; public final static byte TYPE_HTTP_CODE = 0x03; public final static byte TYPE_HTTP_ERROR = 0x04; public final static byte TYPE_XML = 0x05; public final static byte TYPE_IO = 0x06; public final static byte TYPE_RUN = 0x07;private byte type;
private int code;/** 系统默认的UncaughtException处理类 */
private Thread.UncaughtExceptionHandler mDefaultHandler;private AppException() {
this.mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler(); }private AppException(byte type, int code, Exception excp) {
super(excp); this.type = type; this.code = code; if (Debug) { this.saveErrorLog(excp); } }public int getCode() {
return this.code; }public int getType() {
return this.type; }/**
* 提示友好的错误信息 * * @param ctx */ public void makeToast(Context ctx) { switch (this.getType()) { case TYPE_HTTP_CODE: String err = ctx.getString(R.string.http_status_code_error, this.getCode()); Toast.makeText(ctx, err, Toast.LENGTH_SHORT).show(); break; case TYPE_HTTP_ERROR: Toast.makeText(ctx, R.string.http_exception_error, Toast.LENGTH_SHORT).show(); break; case TYPE_SOCKET: Toast.makeText(ctx, R.string.socket_exception_error, Toast.LENGTH_SHORT).show(); break; case TYPE_NETWORK: Toast.makeText(ctx, R.string.network_not_connected, Toast.LENGTH_SHORT).show(); break; case TYPE_XML: Toast.makeText(ctx, R.string.xml_parser_failed, Toast.LENGTH_SHORT).show(); break; case TYPE_IO: Toast.makeText(ctx, R.string.io_exception_error, Toast.LENGTH_SHORT).show(); break; case TYPE_RUN: Toast.makeText(ctx, R.string.app_run_code_error, Toast.LENGTH_SHORT).show(); break; } }/**
* 保存异常日志 * * @param excp */ public void saveErrorLog(Exception excp) { saveErrorLog(excp.getLocalizedMessage()); }/**
* 保存异常日志 * * @param excp */ public void saveErrorLog(String excpMessage) { String errorlog = "errorlog.txt"; String savePath = ""; String logFilePath = ""; FileWriter fw = null; PrintWriter pw = null; try { // 判断是否挂载了SD卡 String storageState = Environment.getExternalStorageState(); if (storageState.equals(Environment.MEDIA_MOUNTED)) { savePath = Environment.getExternalStorageDirectory().getAbsolutePath() + File.separator + GlobalConstants.FOLDER_ROOT + File.separator + "Log/"; File file = new File(savePath); if (!file.exists()) { file.mkdirs(); } logFilePath = savePath + errorlog; } // 没有挂载SD卡，无法写文件 if (logFilePath == "") { return; } File logFile = new File(logFilePath); if (!logFile.exists()) { logFile.createNewFile(); } fw = new FileWriter(logFile, true); pw = new PrintWriter(fw); pw.println("--------------------" + (DateFormat.format("yyyy-MM-dd hh:mm:ss", new Date())) + "---------------------"); pw.println(excpMessage); pw.close(); fw.close(); } catch (Exception e) { Log.e("AppException", "[Exception]" + e.getLocalizedMessage()); } finally { if (pw != null) { pw.close(); } if (fw != null) { try { fw.close(); } catch (IOException e) {} } }}
public static AppException http(int code) {
return new AppException(TYPE_HTTP_CODE, code, null); }public static AppException http(Exception e) {
return new AppException(TYPE_HTTP_ERROR, 0, e); }public static AppException socket(Exception e) {
return new AppException(TYPE_SOCKET, 0, e); }public static AppException io(Exception e) {
if (e instanceof UnknownHostException || e instanceof ConnectException) { return new AppException(TYPE_NETWORK, 0, e); } else if (e instanceof IOException) { return new AppException(TYPE_IO, 0, e); } return run(e); }public static AppException xml(Exception e) {
return new AppException(TYPE_XML, 0, e); }public static AppException network(Exception e) {
if (e instanceof UnknownHostException || e instanceof ConnectException) { return new AppException(TYPE_NETWORK, 0, e); } else if (e instanceof HttpException) { return http(e); } else if (e instanceof SocketException) { return socket(e); } return http(e); }public static AppException run(Exception e) {
return new AppException(TYPE_RUN, 0, e); }/**
* 获取APP异常崩溃处理对象 * * @param context * @return */ public static AppException getAppExceptionHandler() { return new AppException(); }@Override
public void uncaughtException(Thread thread, Throwable ex) {if (!handleException(ex) && mDefaultHandler != null) {
mDefaultHandler.uncaughtException(thread, ex); } else { try { Thread.sleep(15000); } catch (InterruptedException e) { Log.e("AppException", "error : ", e); } // 退出程序 android.os.Process.killProcess(android.os.Process.myPid()); System.exit(1); }}
/**
* 自定义异常处理:收集错误信息&发送错误报告 * * @param ex * @return true:处理了该异常信息;否则返回false */ private boolean handleException(Throwable ex) { if (ex == null) { return false; }final Context context = AppManager.getAppManager().currentActivity();
if (context == null) {
return false; }final String crashReport = getCrashReport(context, ex);
// 显示异常信息&发送报告 new Thread() { public void run() { Looper.prepare(); UIHelper.sendAppCrashReport(context, crashReport); Looper.loop(); }}.start();
saveErrorLog(crashReport);
return true;
}/**
* 获取APP崩溃异常报告 * * @param ex * @return */ private String getCrashReport(Context context, Throwable ex) { PackageInfo pinfo = ((AppApplication) context.getApplicationContext()).getPackageInfo(); StringBuffer exceptionStr = new StringBuffer(); exceptionStr.append("Version: " + pinfo.versionName + "(" + pinfo.versionCode + ")\n"); exceptionStr.append("Android: " + android.os.Build.VERSION.RELEASE + "(" + android.os.Build.MODEL + ")\n"); exceptionStr.append("System package Info:" + collectDeviceInfo(context) + "\n"); exceptionStr.append("System os Info:" + getMobileInfo() + "\n"); exceptionStr.append("Exception: " + ex.getMessage() + "\n"); exceptionStr.append("Exception stack：" + getTraceInfo((Activity) context, ex) + "\n");return exceptionStr.toString();
}/**
* 收集设备参数信息 * * @param ctx */ public String collectDeviceInfo(Context ctx) { StringBuilder sb = new StringBuilder(); JSONObject activePackageJson = new JSONObject();try {
PackageManager pm = ctx.getPackageManager(); PackageInfo pi = pm.getPackageInfo(ctx.getPackageName(), PackageManager.GET_ACTIVITIES); if (pi != null) { String versionName = pi.versionName == null ? "null" : pi.versionName; String versionCode = pi.versionCode + "";activePackageJson.put("versionName", versionName);
activePackageJson.put("versionCode", versionCode); } } catch (NameNotFoundException e) { Log.e("AppException", "an error occured when collect package info", e); } catch (JSONException e) { Log.e("AppException", "jsonException", e); } sb.append("[active Package]"); sb.append(activePackageJson.toString());return sb.toString();
}public static StringBuffer getTraceInfo(Activity a, Throwable e) {
StringBuffer sb = new StringBuffer();Throwable ex = e.getCause() == null ? e : e.getCause();
StackTraceElement[] stacks = ex.getStackTrace(); for (int i = 0; i < stacks.length; i++) { sb.append("class: ").append(stacks[i].getClassName()).append("; method: ") .append(stacks[i].getMethodName()).append("; line: ").append(stacks[i].getLineNumber()) .append("; Exception: ").append(ex.toString() + "\n"); } return sb; }/**
* 获取手机的硬件信息 * * @return */ public String getMobileInfo() { JSONObject osJson = new JSONObject(); // 通过反射获取系统的硬件信息Field[] fields = Build.class.getDeclaredFields();
for (Field field : fields) { try { field.setAccessible(true); osJson.put(field.getName(), field.get(null).toString()); Log.d("AppException", field.getName() + " : " + field.get(null)); } catch (Exception e) { Log.e("AppException", "an error occured when collect crash info", e); } }return osJson.toString();
}}