1.在Application里面初始化
AppCrashHandler.getInstance(this);
2.创建一个类
package com.lvshandian.partylive.utils;
import java.io.File;
import java.io.FileOutputStream;
import java.io.FilenameFilter;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.io.Writer;
import java.lang.Thread.UncaughtExceptionHandler;
import java.lang.reflect.Field;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import android.annotation.SuppressLint;
import android.content.Context;
import android.content.Intent;
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.os.SystemClock;
import android.util.Log;
import android.widget.Toast;
/**
* <h3>全局捕获异常</h3> <br>
* 当程序发生Uncaught异常的时候,有该类来接管程序,并记录错误日志
*/
@SuppressLint("SimpleDateFormat")
public class CrashHandler implements UncaughtExceptionHandler {
public static String TAG = "MyCrash";
// 系统默认的UncaughtException处理类
private Thread.UncaughtExceptionHandler mDefaultHandler;
private static CrashHandler instance = new CrashHandler();
private Context mContext;
// 用来存储设备信息和异常信息
private Map<String, String> infos = new HashMap<String, String>();
// 用于格式化日期,作为日志文件名的一部分
private DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd");
/**
* 保证只有一个CrashHandler实例
*/
private CrashHandler() {
}
/**
* 获取CrashHandler实例 ,单例模式
*/
public static CrashHandler getInstance() {
return instance;
}
/**
* 初始化
*
* @param context
*/
public void init(Context context) {
mContext = context;
// 获取系统默认的UncaughtException处理器
mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler();
// 设置该CrashHandler为程序的默认处理器
Thread.setDefaultUncaughtExceptionHandler(this);
}
/**
* 当UncaughtException发生时会转入该函数来处理
*/
@Override
public void uncaughtException(Thread thread, Throwable ex) {
if (!handleException(ex) && mDefaultHandler != null) {
// 如果用户没有处理则让系统默认的异常处理器来处理
mDefaultHandler.uncaughtException(thread, ex);
} else {
SystemClock.sleep(3000);
// 退出程序
android.os.Process.killProcess(android.os.Process.myPid());
System.exit(1);
}
}
/**
* 自定义错误处理,收集错误信息 发送错误报告等操作均在此完成.
*
* @param ex
* @return true:如果处理了该异常信息; 否则返回false.
*/
private boolean handleException(Throwable ex) {
if (ex == null)
return false;
try {
// 使用Toast来显示异常信息
new Thread() {
@Override
public void run() {
Looper.prepare();
Toast.makeText(mContext, "很抱歉,程序出现异常,即将重启.", Toast.LENGTH_LONG).show();
Looper.loop();
}
}.start();
// 收集设备参数信息
collectDeviceInfo(mContext);
// 保存日志文件
saveCrashInfoFile(ex);
// 重启应用（按需要添加是否重启应用）
Intent intent =
mContext.getPackageManager().getLaunchIntentForPackage(mContext.getPackageName());
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
mContext.startActivity(intent);
// SystemClock.sleep(3000);
} catch (Exception e) {
e.printStackTrace();
}
return true;
}
/**
* 收集设备参数信息
*
* @param ctx
*/
public void collectDeviceInfo(Context ctx) {
try {
PackageManager pm = ctx.getPackageManager();
PackageInfo pi = pm.getPackageInfo(ctx.getPackageName(),
PackageManager.GET_ACTIVITIES);
if (pi != null) {
String versionName = pi.versionName + "";
String versionCode = pi.versionCode + "";
infos.put("versionName", versionName);
infos.put("versionCode", versionCode);
}
} catch (NameNotFoundException e) {
Log.e(TAG, "an error occured when collect package info", e);
}
Field[] fields = Build.class.getDeclaredFields();
for (Field field : fields) {
try {
field.setAccessible(true);
infos.put(field.getName(), field.get(null).toString());
} catch (Exception e) {
Log.e(TAG, "an error occured when collect crash info", e);
}
}
}
/**
* 保存错误信息到文件中
*
* @param ex
* @return 返回文件名称, 便于将文件传送到服务器
* @throws Exception
*/
private String saveCrashInfoFile(Throwable ex) throws Exception {
StringBuffer sb = new StringBuffer();
try {
SimpleDateFormat sDateFormat = new SimpleDateFormat(
"yyyy-MM-dd HH:mm:ss");
String date = sDateFormat.format(new java.util.Date());
sb.append(" " + date + " ");
for (Map.Entry<String, String> entry : infos.entrySet()) {
String key = entry.getKey();
String value = entry.getValue();
sb.append(key + "=" + value + " ");
}
Writer writer = new StringWriter();
PrintWriter printWriter = new PrintWriter(writer);
ex.printStackTrace(printWriter);
Throwable cause = ex.getCause();
while (cause != null) {
cause.printStackTrace(printWriter);
cause = cause.getCause();
}
printWriter.flush();
printWriter.close();
String result = writer.toString();
sb.append(result);
String fileName = writeFile(sb.toString());
return fileName;
} catch (Exception e) {
Log.e(TAG, "an error occured while writing file...", e);
sb.append("an error occured while writing file... ");
writeFile(sb.toString());
}
return null;
}
private String writeFile(String sb) throws Exception {
String time = formatter.format(new Date());
// String fileName = "partylive-" + time + ".log";
String fileName = "partylive-" + time + ".txt";
if (hasSdcard()) {
String path = getGlobalpath();
File dir = new File(path);
if (!dir.exists())
dir.mkdirs();
FileOutputStream fos = new FileOutputStream(path + fileName, true);
fos.write(sb.getBytes());
fos.flush();
fos.close();
}
return fileName;
}
public static String getGlobalpath() {
return Environment.getExternalStorageDirectory().getAbsolutePath()
+ File.separator + "partylive" + File.separator;
}
public static void setTag(String tag) {
TAG = tag;
}
/**
* 判断SD卡是否可用
*
* @return SD卡可用返回true
*/
public static boolean hasSdcard() {
String status = Environment.getExternalStorageState();
return Environment.MEDIA_MOUNTED.equals(status);
}
}