Android一点 异常收集

异常捕捉有助于我们调试错误，但是app发布了自己看不到log怎么办？这时我们就需要AppException异常收集器了

异常的处理主要是实现UncaughtExceptionHandler这个接口，并重载uncaughtException方法，通过Throwable来获取异常的信息。不明白UncaughtExceptionHandler的可以百度查查

AppException

package com.example.test;import java.io.PrintWriter;import java.io.StringWriter;import java.lang.Thread.UncaughtExceptionHandler;import java.lang.reflect.Field;import org.json.JSONObject;import android.content.Context;import android.content.pm.PackageInfo;import android.content.pm.PackageManager;import android.os.Build;import android.telephony.TelephonyManager;public class AppException implements UncaughtExceptionHandler {    /** 程序的Context对象 ,传入ApplicationContext */    private Context context;    private DeviceInfo devInfo;    /** 系统默认的UncaughtException处理类 */    private Thread.UncaughtExceptionHandler mDefaultHandler;    /** CrashHandler实例 */    private static AppException appException;    /** 保证只有一个CrashHandler实例 */    private AppException() {    }    /** 获取CrashHandler实例 ,单例模式 */    public static AppException getInstance() {        if (appException == null) {            appException = new AppException();        }        return appException;    }    /**     * 初始化,注册Context对象, 获取系统默认的UncaughtException处理器, 设置该CrashHandler为程序的默认处理器     *     * @param context     */    public void init(Context context) {        this.context = context;        devInfo=collectDeviceInfo();        mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler();        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) {        handleException(ex);        if (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);        }    }    /**     * 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. 开发者可以根据自己的情况来自定义异常处理逻辑     */    public String handleException(Throwable e) {        StringBuffer sb = new StringBuffer();        // 获取classname、报错的哪一行等        // String className = stacks[0].getFileName();        // String methodName = stacks[0].getMethodName();        // int lineNumber = stacks[0].getLineNumber();        // System.out.println("ElementException:"+"className:"+className+" methodName:"+methodName+" lineNumber:"+lineNumber);        // 获取具体的报错信息        StringWriter sw = new StringWriter();        PrintWriter pw = new PrintWriter(sw);        e.printStackTrace(pw);//      System.out.println("crashMessage:" + sw.toString());        // 直接定位报错信息//      System.out.println("getCause:" + e.getMessage().toString());        sb.append("sdkVersion:"+devInfo.getOsVersion()+"\n")        .append("versionName:"+devInfo.getVersionName()+"\n")        .append("versionCode:"+devInfo.getVersionCode()+"\n")        .append("manufacturer:"+devInfo.getManufacturer()+"\n")        .append("model:"+devInfo.getModel()+"\n")        .append("deviceId:"+devInfo.getDeviceId()+"\n")        .append("Exception:"+sw.toString());        System.out.println("crashMessage:" + sb.toString());        return sb.toString();    }    /**     * 手机设备信息     */    public DeviceInfo collectDeviceInfo() {        // TODO Auto-generated method stub        try {            PackageManager pm = context.getPackageManager();            PackageInfo pi = pm.getPackageInfo(context.getPackageName(),                    PackageManager.GET_ACTIVITIES);            if (pi != null) {                DeviceInfo devInfo=new DeviceInfo();//              devInfo.setOsVersion(android.os.Build.VERSION.SDK);                devInfo.setOsVersion(android.os.Build.VERSION.RELEASE);                String versionName = pi.versionName == null ? "null": pi.versionName;                String versionCode = pi.versionCode + "";                devInfo.setVersionName(versionName);                devInfo.setVersionCode(versionCode);                TelephonyManager tm = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);                  StringBuilder sb = new StringBuilder();                  devInfo.setDeviceId(tm.getDeviceId());                // 获取手机型号                devInfo.setModel(android.os.Build.MODEL);                //获取手机厂商：                devInfo.setManufacturer(android.os.Build.MANUFACTURER);                System.out.println("devInfo:"+devInfo);                return devInfo;            }        } catch (Exception e) {            e.printStackTrace();        }        return null;    }    /**       * 获取手机的硬件信息       *        * @return        */      public String getMobileInfo() {        JSONObject json = 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);            json.put(field.getName(), field.get(null).toString());          } catch (Exception e) {              e.printStackTrace();          }        }        System.out.println("getMobileInfo:"+json.toString());        return json.toString();      }    public class DeviceInfo{        private String osVersion;        private String versionName;        private String versionCode;        private String deviceId;        private String model;        private String manufacturer;        public String getOsVersion() {            return osVersion;        }        public void setOsVersion(String osVersion) {            this.osVersion = osVersion;        }        public String getVersionName() {            return versionName;        }        public void setVersionName(String versionName) {            this.versionName = versionName;        }        public String getVersionCode() {            return versionCode;        }        public void setVersionCode(String versionCode) {            this.versionCode = versionCode;        }        public String getDeviceId() {            return deviceId;        }        public void setDeviceId(String deviceId) {            this.deviceId = deviceId;        }        public String getModel() {            return model;        }        public void setModel(String model) {            this.model = model;        }        public String getManufacturer() {            return manufacturer;        }        public void setManufacturer(String manufacturer) {            this.manufacturer = manufacturer;        }        @Override        public String toString() {            return "DeviceInfo [osVersion=" + osVersion + ", versionName="                    + versionName + ", versionCode=" + versionCode                    + ", deviceId=" + deviceId + ", model=" + model                    + ", manufacturer=" + manufacturer + "]";        }    }}

获取设备信息还需要权限

<uses-permission android:name="android.permission.READ_PHONE_STATE"/>使用的时候我们只要传入ApplicationContext

AppException.getInstance().init(getApplicationContext());