全局监听Crash
package com.example.crashcatch;
import java.io.File;
import java.io.IOException;
import java.lang.Thread.UncaughtExceptionHandler;
import java.lang.reflect.Field;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;
import android.content.Context;
import android.content.Intent;
import android.os.Build;
import android.os.Environment;
import android.util.Log;
import android.widget.Toast;
/**
* 处理系统未捕捉到的异常，防止app崩溃出现的不好体验
* @author yWX206812
*
*/
public class CrashHandler implements Thread.UncaughtExceptionHandler{
CrashApplication crashApplication;
UncaughtExceptionHandler defaultUncaughtExceptionHandler;
SimpleDateFormat simpleDateFormat=new SimpleDateFormat("yyyy-mm-dd_HH-mm-ss");
private static CrashHandler crashHandler=new CrashHandler();
private CrashHandler() {
super();
// TODO Auto-generated constructor stub
}
public static CrashHandler getInstance(){
return crashHandler;
}
public void init(CrashApplication crashApplication){
this.crashApplication=crashApplication;
defaultUncaughtExceptionHandler=Thread.getDefaultUncaughtExceptionHandler();
Thread.setDefaultUncaughtExceptionHandler(this);
}
@Override
public void uncaughtException(Thread thread, Throwable ex) {
// TODO Auto-generated method stub
if(!catchHandler(ex)){
defaultUncaughtExceptionHandler.uncaughtException(thread, ex);
}
}
/**
* 异常处理
* @param ex
* @return
*/
public boolean catchHandler(Throwable ex){
boolean result=false;
try {
Log.e("------------------异常捕获--------------","写入文档");
result= saveExceptionInfo(ex);
Toast.makeText(crashApplication.getCurrentContext(), "程序异常", Toast.LENGTH_SHORT).show();
crashApplication.getCurrentContext().sendBroadcast(new Intent(CrashActivity.crashAction));
Log.e("------------------异常捕获--------------","发送广播");
} catch (IllegalArgumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IllegalAccessException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return result;
}
/**
* 获取设备和app的基本信息
* @return
* @throws IllegalAccessException
* @throws IllegalArgumentException
*/
public Map<String, String> getBaseInfo() throws IllegalArgumentException, IllegalAccessException{
Map<String, String> map=new HashMap<String, String>();
long currTime=System.currentTimeMillis();
String timeStr=simpleDateFormat.format(new Date(currTime));
map.put("当前时间", timeStr);
Class bClass=Build.class.getClass();
Field[] fields=bClass.getFields();
for (int i = 0; i < fields.length; i++) {
String key=fields[i].getName();
String val=fields[i].get(null).toString();
map.put(key, val);
}
return map;
}
public boolean saveExceptionInfo(Throwable ex) throws IllegalArgumentException, IllegalAccessException, IOException{
Map<String, String> map=getBaseInfo();
map.put("", ex.getMessage());
Set<String> keys=map.keySet();
Iterator<String> iterator=keys.iterator();
StringBuilder sb=new StringBuilder();
while (iterator.hasNext()) {
String key=iterator.next();
String val=map.get(key);
sb.append(key+":"+val+"\n");
}
String packageName=crashApplication.getCurrentContext().getPackageName();
if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){
File sdDir=Environment.getExternalStorageDirectory();
File dir=new File(sdDir,packageName+"/"+"crash_log");
if(!dir.exists()){
dir.mkdirs();
}
String currLogTime=simpleDateFormat.format(new Date(System.currentTimeMillis()));
String fileName="crash_"+currLogTime+".log";
return SDCardUtil.writeFile(dir, fileName,sb.toString());
}
return false;
}
}
package com.example.crashcatch;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.util.Log;
public class CrashActivity extends Activity {
public static final String crashAction="CrashCatch";
public CrashReceiver crashReceiver=new CrashReceiver();
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
((CrashApplication)getApplication()).setCurrentContext(this);
Log.e("-----------------crashReceiver-----------------","注册广播");
IntentFilter intentFilter=new IntentFilter();
intentFilter.addAction(CrashActivity.crashAction);
registerReceiver(crashReceiver, intentFilter);
Log.e("-----------------crashReceiver-----------------","注册完毕");
}
class CrashReceiver extends BroadcastReceiver{
@Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
Log.e("-----------------crashReceiver-----------------",intent.getAction());
if(intent.getAction().equals(crashAction)){
new AlertDialog.Builder(CrashActivity.this).setMessage("程序出现异常,是否退出").setNegativeButton("确认", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
// TODO Auto-generated method stub
unregisterReceiver(crashReceiver);
android.os.Process.killProcess(android.os.Process.myPid());
System.exit(0);
}
}).create().show();
}
}
}
}
SD卡检测
package com.example.crashcatch;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import android.util.Log;
public class SDCardUtil {
/**
* 读取文件返回字节数组
* @param filePath
* @return
*/
public static byte[] readFile(String filePath) {
return new byte[1];
}
/**
* 写入文件
* @param filePath
* @param bytes
* @return
* @throws IOException
*/
public static boolean writeFile(String filePath,String content) throws IOException {
File f=getFile(filePath);
if(f!=null){
f.delete();
}
f=new File(filePath);
try {
FileWriter fw=new FileWriter(f);
fw.write(content);
fw.close();
Log.e("------------------写入文件--------------","写入完毕");
return true;
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
throw e;
} catch (IOException e) {
// TODO Auto-generated catch block
throw e;
}
}
/**
* 写入文件
* @param dir
* @param fileName
* @param bytes
* @return
* @throws IOException
*/
public static boolean writeFile(File dir,String fileName,String content) throws IOException {
File f=getFile(dir,fileName);
if(f!=null){
f.delete();
}
f=new File(dir,fileName);
return writeFile(f.getAbsolutePath(), content);
}
public static File getFile(String filePath) {
File file = new File(filePath);
return getFile(file);
}
public static File getFile(File file) {
if (file.exists() && file.isFile()) {
return file;
}
return null;
}
public static File getFile(File dir, String fileName) {
File file = new File(dir, fileName);
return getFile(file);
}
}
