Android实现自定义Crash handler记录崩溃信息实例代码

import android.os.Build;
import android.os.Environment;
import android.os.Process;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
public class CrashHandler implements Thread.UncaughtExceptionHandler {
private static final String TAG = "CrashHandler";
private static final boolean DEBUG = true;
// 自定义存储的目录
private static final String PATH = Environment.getExternalStorageDirectory().getPath() + "/myApp/log/";
private static final String FILE_NAME = "crash";
private static final String FILE_NAME_SUFFIX = ".txt";
private String phoneInfo;
private static CrashHandler instance = new CrashHandler();
private Thread.UncaughtExceptionHandler mDefaultCrashHandler;
private CrashHandler() {
}
public static CrashHandler getInstance() {
return instance;
}
public void init() {
mDefaultCrashHandler = Thread.getDefaultUncaughtExceptionHandler();
Thread.setDefaultUncaughtExceptionHandler(this);
phoneInfo = getPhoneInformation();
}
/**
* 这个是最关键的函数，当程序中有未被捕获的异常，系统将会自动调用uncaughtException方法
* thread为出现未捕获异常的线程，ex为未捕获的异常，有了这个ex，我们就可以得到异常信息
*/
@Override
public void uncaughtException(Thread thread, Throwable ex) {
try {
//导出异常信息到SD卡中
dumpExceptionToSDCard(ex);
//这里可以上传异常信息到服务器，便于开发人员分析日志从而解决bug
uploadExceptionToServer();
} catch (IOException e) {
e.printStackTrace();
}
ex.printStackTrace();
//如果系统提供默认的异常处理器，则交给系统去结束程序，否则就由自己结束自己
if (mDefaultCrashHandler != null) {
mDefaultCrashHandler.uncaughtException(thread, ex);
} else {
try {
Thread.sleep(2000); // 延迟2秒杀进程
} catch (InterruptedException e) {
e.printStackTrace();
}
android.os.Process.killProcess(Process.myPid());
}
}
private void dumpExceptionToSDCard(Throwable ex) throws IOException {
//如果SD卡不存在或无法使用，则无法把异常信息写入SD卡
if (!Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
if (DEBUG) {
Log.e(TAG, "sdcard unmounted,skip dump exception");
return;
}
}
File dir = new File(PATH);
if (!dir.exists()) {
dir.mkdirs();
}
long current = System.currentTimeMillis();
String time = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss", Locale.CHINA).format(new Date(current));
File file = new File(PATH + FILE_NAME + time + FILE_NAME_SUFFIX);
try {
PrintWriter pw = new PrintWriter(new BufferedWriter(new FileWriter(file)));
pw.println(time);
pw.println(phoneInfo);
pw.println();
ex.printStackTrace(pw);
pw.close();
Log.e(TAG, "dump crash info seccess");
} catch (Exception e) {
Log.e(TAG, e.getMessage());
Log.e(TAG, "dump crash info failed");
}
}
private void uploadExceptionToServer() {
// 将异常信息发送到服务器
}
private String getPhoneInformation() {
StringBuilder sb = new StringBuilder();
sb.append("App version name:")
.append(BuildConfig.VERSION_NAME)
.append(", version code:")
.append(BuildConfig.VERSION_CODE).append("\n");
//Android版本号
sb.append("OS Version: ");
sb.append(Build.VERSION.RELEASE);
sb.append("_");
sb.append(Build.VERSION.SDK_INT).append("\n");
//手机制造商
sb.append("Vendor: ");
sb.append(Build.MANUFACTURER).append("\n");
//手机型号
sb.append("Model: ");
sb.append(Build.MODEL).append("\n");
//CPU架构
sb.append("CPU ABI:").append("\n");
for (String abi : Build.SUPPORTED_ABIS) {
sb.append(abi).append("\n");
}
return sb.toString();
}
}

@Override
public void onCreate() {
super.onCreate();
// init application...
CrashHandler.getInstance().init();
}