安卓APp捕获异常

来源：互联网发布：mac os 10.10 u盘安装编辑：程序博客网时间：2024/05/01 03:15

直接贴代码了

package adadd；import android.app.AlertDialog;import android.content.Context;import android.content.DialogInterface;import android.os.Environment;import android.os.Looper;import android.util.Log;import java.io.File;import java.io.FileOutputStream;import java.io.PrintWriter;import java.io.StringWriter;import java.io.Writer;import java.text.DateFormat;import java.text.SimpleDateFormat;import java.util.Date;import java.util.HashMap;import java.util.Map;/** * 异常捕获 * * @author huting * @date 2016/1/15 */public class MyExceptionHandler implements Thread.UncaughtExceptionHandler{    private final static String TAG = "UncaughtException";    private static MyExceptionHandler mUncaughtException;    private Context context;    private DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss");    private Map<String, String> infos = new HashMap<String, String>();    public Context getContext() {        return context;    }    public void setContext(Context context) {        this.context = context;    }    private MyExceptionHandler() {}    public synchronized static MyExceptionHandler getInstance() {        if (mUncaughtException == null) {            mUncaughtException = new MyExceptionHandler();        }        return mUncaughtException;    }    public void init() {        Thread.setDefaultUncaughtExceptionHandler(mUncaughtException);    }    @Override    public void uncaughtException(Thread thread, Throwable throwable) {        saveCrashInfo2File(throwable);        Log.e(TAG, "uncaughtException thread : " + thread + "||name=" + thread.getName() + "||id=" + thread.getId() + "||exception=" + throwable);        showDialog();    }    private void showDialog() {        new Thread() {            @Override            public void run() {                Looper.prepare();                new AlertDialog.Builder(context).setTitle("泪奔提示").setCancelable(false).setMessage("程序出现异常...")                        .setNeutralButton("我知道了", new DialogInterface.OnClickListener() {                            @Override                            public void onClick(DialogInterface dialog, int which) {                                //System.exit(0);                               // ((Activity)context).finish();                                dialog.dismiss();                                System.exit(0);                            }                        }).create().show();                Looper.loop();            }        }.start();    }    private String saveCrashInfo2File(Throwable ex) {        StringBuffer sb = new StringBuffer();        long timestamp = System.currentTimeMillis();        String time = formatter.format(new Date());        sb.append("\n"+time+"----");        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 {            String fileName = "exception.log";            if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {                String path = "/sdcard/ShopNC/crash/";                File dir = new File(path);                if (!dir.exists()) {                    dir.mkdirs();                }                FileOutputStream fos = new FileOutputStream(path + fileName,true);                fos.write(sb.toString().getBytes());                fos.close();            }            return fileName;        } catch (Exception e) {            Log.e(TAG, "an error occured while writing file...", e);        }        return null;    }}

注册在application

MyExceptionHandler mUncaughtException = MyExceptionHandler.getInstance();mUncaughtException.init();

调用在activity

MyExceptionHandler.getInstance().setContext(this);

就是这么简单

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