Android 使用自定义UncaughtExceptionHandler捕获异常

来源：互联网发布：acrobat xi注册机 mac 编辑：程序博客网时间：2024/04/27 22:01

应用出现异常的时候，不弹出系统的“XXX已停止运行”对话框，保存异常Log并进行后续处理，便于追踪，提升用户体验。

package com.tchip.autorecord.util;import java.io.File;import java.io.FileOutputStream;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.Locale;import java.util.Map;import com.tchip.autorecord.MyApp;import com.tchip.autorecord.R;import com.tchip.autorecord.util.ProviderUtil.Name;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.util.Log;/** * UncaughtException处理类,当程序发生Uncaught异常的时候,有该类来接管程序,并记录发送错误报告. */public class MyUncaughtExceptionHandler implements UncaughtExceptionHandler {    public static final String TAG = "AZ";    // 系统默认的UncaughtException处理类    private Thread.UncaughtExceptionHandler mDefaultHandler;    // CrashHandler实例    private static MyUncaughtExceptionHandler INSTANCE = new MyUncaughtExceptionHandler();    // 程序的Context对象    private Context context;    // 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:yyyy-MM-dd-HH-mm-ss    private DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd-HH-mm",            Locale.CHINESE);    /** 保证只有一个CrashHandler实例 */    private MyUncaughtExceptionHandler() {    }    /** 获取CrashHandler实例 ,单例模式 */    public static MyUncaughtExceptionHandler getInstance() {        return INSTANCE;    }    /**     * 初始化     *      * @param context     */    public void init(Context context) {        this.context = 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) {        MyApp.isAppException = true;        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 {            // Reset Record State            ProviderUtil.setValue(context, Name.REC_FRONT_STATE, "0");            ProviderUtil.setValue(context, Name.REC_BACK_STATE, "0");            try {                Thread.sleep(2000);            } catch (InterruptedException e) {                Log.e(TAG, "error : ", e);            }            // 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;        }        // 使用Toast来显示异常信息        new Thread() {            @Override            public void run() {                Looper.prepare();                HintUtil.showToast(                        context,                        context.getResources().getString(                                R.string.app_has_exception));                Looper.loop();            }        }.start();        collectDeviceInfo(context); // 收集设备参数信息        saveCrashInfo2File(ex); // 保存日志文件        // 把日志保存后上传        // if(fileName != null)        // new Upload("",YuntingParameters.crashLogPath + fileName);        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 == null ? "null"                        : 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());                Log.d(TAG, field.getName() + " : " + field.get(null));            } 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     */    private void saveCrashInfo2File(Throwable ex) {        if (!ClickUtil.isSaveLogTooQuick(10 * 1000)) {            StringBuffer sb = new StringBuffer();            for (Map.Entry<String, String> entry : infos.entrySet()) {                String key = entry.getKey();                String value = entry.getValue();                sb.append(key + "=" + value + "\n");            }            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.close();            String result = writer.toString();            sb.append(result);            try {                // long timeStamp = System.currentTimeMillis();                String time = formatter.format(new Date());                String fileName = time + ".log";                if (Environment.getExternalStorageState().equals(                        Environment.MEDIA_MOUNTED)) {                    File dir = new File(crashLogPath);                    if (!dir.exists()) {                        dir.mkdirs();                    }                    FileOutputStream fos = new FileOutputStream(crashLogPath                            + fileName);                    fos.write(sb.toString().getBytes());                    fos.close();                }            } catch (Exception e) {                Log.e(TAG, "an error occured while writing file...", e);            }        }    }    public static String crashLogPath = "/storage/sdcard0/.AutoLog/AutoRecord/";}

需要在应用的Application中进行初始化：

        MyUncaughtExceptionHandler myUncaughtExceptionHandler = MyUncaughtExceptionHandler                .getInstance();        myUncaughtExceptionHandler.init(context);

0 0