CrashLog
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());
}
}
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 obtainSimpleInfo(Context context){
HashMap map = new HashMap();
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 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
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