1. 在Application中初始化
public class BaseApplication extends Application {
@Override
public void onCreate() {
super.onCreate();
//设置全局异常
ExceptionCrashHandler.getInstance().init(this);
}
}
2. 调用，并上传错误信息到服务器
@Override
protected void initView() {
//获取上次崩溃的信息文件
File crashFile = ExceptionCrashHandler.getInstance().getCrashFile();
//把崩溃的信息上传到服务器
try {
InputStreamReader fileReader = new InputStreamReader(new FileInputStream(crashFile));
char[] buffer = new char[1024];
int len;
StringBuilder sb = new StringBuilder();
while ((len = fileReader.read(buffer)) != -1) {
sb.append(buffer, 0, len);
sb.append("\n");
}
Log.e("设备信息", sb.toString());
//上传错误信息到服务器
// ...
} catch (Exception e) {
e.printStackTrace();
}
}
工具类：
import android.content.Context;
import android.content.SharedPreferences;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.os.Build;
import android.os.Environment;
import android.util.Log;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintWriter;
import java.io.StringWriter;
import java.lang.reflect.Field;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.HashMap;
import java.util.Map;
/**
* Created by zkt on 2018-3-5.
*/
public class ExceptionCrashHandler implements Thread.UncaughtExceptionHandler {
private static ExceptionCrashHandler mInstance;
private Context mContext;
// 获取系统默认的
private Thread.UncaughtExceptionHandler mDefaultExceptionHandler;
private String TAG = "ExceptionCrashHandler";
public static ExceptionCrashHandler getInstance() {
if (null == mInstance) {
synchronized (ExceptionCrashHandler.class) {
if (null == mInstance) {
mInstance = new ExceptionCrashHandler();
}
}
}
return mInstance;
}
public void init(Context context) {
this.mContext = context;
Thread.currentThread().setUncaughtExceptionHandler(this);
mDefaultExceptionHandler = Thread.currentThread().getDefaultUncaughtExceptionHandler();
}
@Override
public void uncaughtException(Thread t, Throwable e) {
Log.e(TAG, "报异常了！");
// 1. 获取信息
// 1.1 崩溃信息
// 1.2 手机信息
// 1.3 版本信息
// 2.写入文件
String crashFileName = null;
try {
crashFileName = saveInfoToSD(e);
// 3. SP缓存崩溃日志文件名称
cacheCrashFileName(crashFileName);
} catch (IOException e1) {
e1.printStackTrace();
}
Log.e(TAG, "fileName --> " + crashFileName);
//先执行自定义的异常处理，再执行系统默认的（在Logcat中打印异常信息）
mDefaultExceptionHandler.uncaughtException(t, e);
}
/**
* 缓存崩溃日志文件
*
* @param fileName
*/
private void cacheCrashFileName(String fileName) {
SharedPreferences sp = mContext.getSharedPreferences("crash", Context.MODE_PRIVATE);
sp.edit().putString("CRASH_FILE_NAME", fileName).commit();
}
/**
* 获取崩溃文件名称
*
* @return
*/
public File getCrashFile() {
String crashFileName = mContext.getSharedPreferences("crash",
Context.MODE_PRIVATE).getString("CRASH_FILE_NAME", "");
return new File(crashFileName);
}
/**
* 保存获取的 软件信息，设备信息和出错信息保存在SDcard中
*
* @param ex
* @return
*/
private String saveInfoToSD(Throwable ex) throws IOException {
String fileName = null;
StringBuffer sb = new StringBuffer();
for (Map.Entry entry : obtainSimpleInfo(mContext)
.entrySet()) {
String key = entry.getKey();
String value = entry.getValue();
sb.append(key).append(" = ").append(value).append("\n");
}
sb.append(obtainExceptionInfo(ex));
if (Environment.getExternalStorageState().equals(
Environment.MEDIA_MOUNTED)) {
File dir = new File(mContext.getFilesDir() + File.separator + "crash"
+ File.separator);
// 先删除之前的异常信息
if (dir.exists()) {
deleteDir(dir);
}
// 再从新创建文件夹
if (!dir.exists()) {
dir.mkdir();
}
try {
fileName = dir.toString()
+ File.separator
+ getAssignTime("yyyy_MM_dd_HH_mm") + ".txt";
FileOutputStream fos = new FileOutputStream(fileName);
fos.write(sb.toString().getBytes());
fos.flush();
fos.close();
} catch (Exception e) {
e.printStackTrace();
}
}
return fileName;
}
/**
* 返回当前日期根据格式
**/
private String getAssignTime(String dateFormatStr) {
DateFormat dataFormat = new SimpleDateFormat(dateFormatStr);
long currentTime = System.currentTimeMillis();
return dataFormat.format(currentTime);
}
/**
* 获取一些简单的信息,软件版本，手机版本，型号等信息存放在HashMap中
*
* @return
*/
private HashMap obtainSimpleInfo(Context context) {
HashMap map = new HashMap<>();
PackageManager mPackageManager = context.getPackageManager();
PackageInfo mPackageInfo = null;
try {
mPackageInfo = mPackageManager.getPackageInfo(
context.getPackageName(), PackageManager.GET_ACTIVITIES);
} catch (PackageManager.NameNotFoundException e) {
e.printStackTrace();
}
map.put("versionName", mPackageInfo.versionName);
map.put("versionCode", "" + mPackageInfo.versionCode);
map.put("MODEL", "" + Build.MODEL);
map.put("SDK_INT", "" + Build.VERSION.SDK_INT);
map.put("PRODUCT", "" + Build.PRODUCT);
map.put("MOBLE_INFO", getMobileInfo());
return map;
}
/**
* Cell phone information
*
* @return
*/
public static String getMobileInfo() {
StringBuffer sb = new StringBuffer();
try {
Field[] fields = Build.class.getDeclaredFields();
for (Field field : fields) {
field.setAccessible(true);
String name = field.getName();
String value = field.get(null).toString();
sb.append(name + "=" + value);
sb.append("\n");
}
} catch (Exception e) {
e.printStackTrace();
}
return sb.toString();
}
/**
* 获取系统未捕捉的错误信息
*
* @param throwable
* @return
*/
private String obtainExceptionInfo(Throwable throwable) {
StringWriter stringWriter = new StringWriter();
PrintWriter printWriter = new PrintWriter(stringWriter);
throwable.printStackTrace(printWriter);
printWriter.close();
return stringWriter.toString();
}
/**
* 递归删除目录下的所有文件及子目录下所有文件
*
* @param dir 将要删除的文件目录
* @return boolean Returns "true" if all deletions were successful. If a
* deletion fails, the method stops attempting to delete and returns
* "false".
*/
private boolean deleteDir(File dir) {
if (dir.isDirectory()) {
String[] children = dir.list();
// 递归删除目录中的子目录下
for (int i = 0; i < children.length; i++) {
boolean success = deleteDir(new File(dir, children[i]));
if (!success) {
return false;
}
}
}
// 目录此时为空，可以删除
return true;
}
}