CrashLog

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异常处理类java的Thread中有一个UncaughtExceptionHandler接口，该接口的作用主要是为了当 Thread 因未捕获的异常而突然终止时，调用处理程序。 接口下面有setDefaultUncaughtExceptionHandler(Thread.UncaughtExceptionHandler eh) 方法,方法主要作用为设置当线程由于未捕获到异常而突然终止，并且没有为该线程定义其他处理程序时所调用的默认处理程序 自定义系统的Crash捕捉类，用Toast替换系统的对话框* 将软件版本信息，设备信息，出错信息保存在sd卡中，你可以上传到服务器中

（1）MyActivity类

package com.ncs.CustomCrash;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.widget.TextView;public class MyActivity extends Activity {    /**     * 存在空指针异常     * Called when the activity is first created.     */    TextView mTextView;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);//        mTextView.setText("crash");    }    public void tosubactivity(View v){        Intent it = new Intent(this,SubActivity.class);        Student data = new Student();        it.putExtra("data",data);        this.startActivity(it);    }}

（2）CrashApplication类

package com.ncs.CustomCrash;import android.app.Application;/** * Created by yeyy on 6/17/2015. */public class CrashApplication extends Application {    @Override    public void onCreate() {        super.onCreate();        CustomCrashHandler mCustomCrashHandler = CustomCrashHandler.getInstance();        mCustomCrashHandler.setCustomCrashHanler(getApplicationContext());    }}
（3）CustomCrashHandler类

package com.ncs.CustomCrash;import java.io.File;import java.io.FileOutputStream;import java.io.PrintWriter;import java.io.StringWriter;import java.text.SimpleDateFormat;import java.util.Date;import java.util.HashMap;import java.util.Map;import java.util.TimeZone;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;import android.widget.Toast;/** * Created by yeyy on 6/17/2015. *//** * 异常处理类 * java的Thread中有一个UncaughtExceptionHandler接口，该接口的作用主要是为了 * 当 Thread 因未捕获的异常而突然终止时，调用处理程序。 * 接口下面有setDefaultUncaughtExceptionHandler(Thread.UncaughtExceptionHandler eh) * 方法,方法主要作用为设置当线程由于未捕获到异常而突然终止，并且没有为该线程定义其他处理程序时所调用的默认处理程序 * 自定义系统的Crash捕捉类，用Toast替换系统的对话框 * 将软件版本信息，设备信息，出错信息保存在sd卡中，你可以上传到服务器中 */public class CustomCrashHandler implements Thread.UncaughtExceptionHandler{    private static final String TAG = "Activity";    private Context mContext;//程序的context对象    private static final String SDCARD_ROOT = Environment.getExternalStorageDirectory().toString();    //CrashHandler实例    private static CustomCrashHandler mInstance = new CustomCrashHandler();    private CustomCrashHandler(){}    /**     * 单例模式，保证只有一个CustomCrashHandler实例存在     * @return     */    public static CustomCrashHandler getInstance(){        return mInstance;    }    /**     * 异常发生时，系统回调的函数，我们在这里处理一些操作     */    @Override    public void uncaughtException(Thread thread, Throwable ex) {        //将一些信息保存到SDcard中        savaInfoToSD(mContext, ex);        //提示用户程序即将退出        showToast(mContext, "很抱歉，程序遭遇异常，即将退出！");        try {            thread.sleep(2000);        } catch (InterruptedException e) {            e.printStackTrace();        }//      android.os.Process.killProcess(android.os.Process.myPid());//        System.exit(1);        //完美退出程序方法        ExitAppUtils.getInstance().exit();    }    /**     * 为我们的应用程序设置自定义Crash处理     */    public void setCustomCrashHanler(Context context){        mContext = context;        Thread.setDefaultUncaughtExceptionHandler(this);    }    /**     * 显示提示信息，需要在线程中显示Toast     * @param context     * @param msg     */    private void showToast(final Context context, final String msg){        new Thread(new Runnable() {            @Override            public void run() {                Looper.prepare();                Toast.makeText(context, msg, Toast.LENGTH_LONG).show();                Looper.loop();            }        }).start();    }    /**     * 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     * @param context     * @return     */    private HashMap<String, String> obtainSimpleInfo(Context context){        HashMap<String, String> map = new HashMap<String, String>();        PackageManager mPackageManager = context.getPackageManager();        PackageInfo mPackageInfo = null;        try {            mPackageInfo = mPackageManager.getPackageInfo(context.getPackageName(), PackageManager.GET_ACTIVITIES);        } catch (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);        return map;    }    /**     * 获取系统未捕捉的错误信息     * @param throwable     * @return     */    private String obtainExceptionInfo(Throwable throwable) {        StringWriter mStringWriter = new StringWriter();        PrintWriter mPrintWriter = new PrintWriter(mStringWriter);        throwable.printStackTrace(mPrintWriter);        mPrintWriter.close();        Log.e(TAG, mStringWriter.toString());        return mStringWriter.toString();    }    /**     * 保存获取的 软件信息，设备信息和出错信息保存在SDcard中，但是看不到？     * @param context     * @param ex     * @return     */    private String savaInfoToSD(Context context, Throwable ex){        String fileName = null;        StringBuffer sb = new StringBuffer();        for (Map.Entry<String, String> entry : obtainSimpleInfo(context).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(SDCARD_ROOT + File.separator + "crash" + File.separator);            if(! dir.exists()){                dir.mkdir();            }            try{                fileName = dir.toString() + File.separator + paserTime(System.currentTimeMillis()) + ".log";                FileOutputStream fos = new FileOutputStream(fileName);                fos.write(sb.toString().getBytes());                fos.flush();                fos.close();            }catch(Exception e){                e.printStackTrace();            }        }        return fileName;    }    /**     * 将毫秒数转换成yyyy-MM-dd-HH-mm-ss的格式     * @param milliseconds     * @return     */    private String paserTime(long milliseconds) {        System.setProperty("user.timezone", "Asia/Shanghai");        TimeZone tz = TimeZone.getTimeZone("Asia/Shanghai");        TimeZone.setDefault(tz);        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss");        String times = format.format(new Date(milliseconds));        return times;    }}

（4）AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"          package="com.ncs.CustomCrash"          android:versionCode="1"          android:versionName="1.0">    <!--<uses-sdk android:minSdkVersion="19"/>-->    <uses-permission android:name="android.permission.write_external_storage"/>    <!--注意android:name=".CrashApplication"-->    <application            android:name=".CrashApplication"            android:label="@string/app_name"            android:icon="@drawable/ic_launcher">        <activity android:name="MyActivity"                  android:label="@string/app_name">            <intent-filter>                <action android:name="android.intent.action.MAIN"/>                <category android:name="android.intent.category.LAUNCHER"/>            </intent-filter>        </activity>        <activity android:name="SubActivity"/>    </application></manifest>
（5）Layout文件

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"              android:orientation="vertical"              android:layout_width="fill_parent"              android:layout_height="fill_parent"        >    <Button            android:id="@+id/but"            android:layout_width="fill_parent"            android:layout_height="wrap_content"            android:text="Hello World, MyActivity"            android:onClick="tosubactivity"            /></LinearLayout>

源码下载地址：http://download.csdn.net/detail/csdnyuandaimaxuexi/8968317

log文件的保存位置如图显示

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