Android 对程序异常崩溃的捕捉 转载 + 自己修改+自己写的Demo
2017-02-09 10:50
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转载:http://blog.csdn.net/i_lovefish/article/details/17719081
我自己写的Demo:http://pan.baidu.com/s/1gfFpq8N
1.以下为异常捕捉处理代码
2.BaseApplication
3. 清单文件添加application和权限
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.exceptioncatch_save_send"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="14"
android:targetSdkVersion="22" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme"
android:name="com.example.exceptioncatch_save_send.base.CatchExceptionApplication">
<activity
android:name=".MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
======================================================
4.代码校验:
import java.io.File;
import com.example.exceptioncatch_save_send.utils.SDCard_and_InnerStore;
import android.app.Activity;
import android.os.Bundle;
public class MainActivity extends Activity {
private String s;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
String sdorInner=SDCard_and_InnerStore.getSDorInStore(this) + File.separator +"ZhaiDaiSource" + File.separator + "head.jpg";
System.out.println("sdorInner = "+sdorInner);
System.out.println(s.equals("hello"));
}
}
我自己写的Demo:http://pan.baidu.com/s/1gfFpq8N
1.以下为异常捕捉处理代码
import java.io.BufferedReader; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStreamReader; import java.io.PrintWriter; import java.io.StringWriter; import java.io.Writer; import java.lang.Thread.UncaughtExceptionHandler; import java.lang.reflect.Field; import java.text.DateFormat; import java.text.SimpleDateFormat; import java.util.Date; import java.util.HashMap; import java.util.Map; 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; /** * UncaughtException处理类,当程序发生Uncaught异常的时候,有该类来接管程序,并记录发送错误报告. * * 需要在Application中注册,为了要在程序启动器就监控整个程序。 */ public class CrashHandler implements UncaughtExceptionHandler { public static final String TAG = "CrashHandler"; /** 崩溃异常日志保存路径:*/ private String path = "/storage/emulated/0/ZhaiDaiSource/crash/"; // private String path = "/mnt/sdcard/crash/"; private String preFileName = "ExceptionCatch_Save_Send"; //系统默认的UncaughtException处理类 private Thread.UncaughtExceptionHandler mDefaultHandler; //CrashHandler实例 private static CrashHandler instance; //程序的Context对象 private Context mContext; //用来存储设备信息和异常信息 private Map<String, String> infos = new HashMap<String, String>(); //用于格式化日期,作为日志文件名的一部分 private DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss"); /** 保证只有一个CrashHandler实例 */ private CrashHandler() {} /** 获取CrashHandler实例 ,单例模式 */ public static CrashHandler getInstance() { if(instance == null) instance = new CrashHandler(); return instance; } /** * 初始化 */ public void init(Context context) { mContext = context; //获取系统默认的UncaughtException处理器 mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler(); //设置该CrashHandler为程序的默认处理器 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) { if (!handleException(ex) && 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); } else { try { Thread.sleep(3000); } catch (InterruptedException e) { Log.e(TAG, "error : ", e); } //退出程序 android.os.Process.killProcess(android.os.Process.myPid()); System.exit(1); } } /** * 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. * * @param ex * @return true:如果处理了该异常信息;否则返回false. */ private boolean handleException(Throwable ex) { if (ex == null) { return false; } Log.e(TAG, "error : ", ex); //收集设备参数信息 collectDeviceInfo(mContext); //使用Toast来显示异常信息 new Thread() { @Override public void run() { Looper.prepare(); Toast.makeText(mContext, "很抱歉,程序出现异常,即将退出.", Toast.LENGTH_SHORT).show(); Looper.loop(); } }.start(); //保存日志文件 saveCatchInfo2File(ex); return true; } /** * 收集设备参数信息 * @param ctx */ public void collectDeviceInfo(Context ctx) { try { PackageManager pm = ctx.getPackageManager(); PackageInfo pi = pm.getPackageInfo(ctx.getPackageName(), PackageManager.GET_ACTIVITIES); if (pi != null) { String versionName = pi.versionName == null ? "null" : pi.versionName; String versionCode = pi.versionCode + ""; infos.put("versionName", versionName); infos.put("versionCode", versionCode); } } catch (NameNotFoundException e) { Log.e(TAG, "an error occured when collect package info", e); } Field[] fields = Build.class.getDeclaredFields(); for (Field field : fields) { try { field.setAccessible(true); infos.put(field.getName(), field.get(null).toString()); Log.d(TAG, field.getName() + " : " + field.get(null)); } catch (Exception e) { Log.e(TAG, "an error occured when collect crash info", e); } } } /** * 保存错误信息到文件中 * * @param ex * @return 返回文件名称,便于将文件传送到服务器 */ private String saveCatchInfo2File(Throwable ex) { StringBuffer sb = new StringBuffer(); 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 { long timestamp = System.currentTimeMillis(); String time = formatter.format(new Date()); String fileName = preFileName + time + "-" + timestamp + ".log"; /*使用SDcard_and_InnerStore.java 类获取 路径 就不需要这个判断了*/ if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) { // String path = "/mnt/sdcard/crash/"; File dir = new File(path); if (!dir.exists()) { dir.mkdirs(); } FileOutputStream fos = new FileOutputStream(path + fileName); fos.write(sb.toString().getBytes()); //发送给开发人员 sendCrashLog2PM(path+fileName); fos.close(); } return fileName; } catch (Exception e) { Log.e(TAG, "an error occured while writing file...", e); } return null; } /** * 将捕获的导致崩溃的错误信息发送给开发人员 * * 目前只将log日志保存在sdcard 和输出到LogCat中,并未发送给后台。 */ private void sendCrashLog2PM(String fileName){ if(!new File(fileName).exists()){ Toast.makeText(mContext, "日志文件不存在!", Toast.LENGTH_SHORT).show(); return; } FileInputStream fis = null; BufferedReader reader = null; String s = null; try { fis = new FileInputStream(fileName); reader = new BufferedReader(new InputStreamReader(fis, "GBK")); while(true){ s = reader.readLine(); if(s == null) break; //由于目前尚未确定以何种方式发送,所以先打出log日志。 Log.i("info", s.toString()); } } catch (FileNotFoundException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); }finally{ // 关闭流 try { reader.close(); fis.close(); } catch (IOException e) { e.printStackTrace(); } } } }
2.BaseApplication
import android.app.Application; import android.content.Context; public class CatchExceptionApplication extends Application { @Override public void onCreate() { super.onCreate(); CrashHandler catchHandler = CrashHandler.getInstance(); catchHandler.init(getApplicationContext()); } }
3. 清单文件添加application和权限
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.exceptioncatch_save_send"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="14"
android:targetSdkVersion="22" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme"
android:name="com.example.exceptioncatch_save_send.base.CatchExceptionApplication">
<activity
android:name=".MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
======================================================
4.代码校验:
import java.io.File;
import com.example.exceptioncatch_save_send.utils.SDCard_and_InnerStore;
import android.app.Activity;
import android.os.Bundle;
public class MainActivity extends Activity {
private String s;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
String sdorInner=SDCard_and_InnerStore.getSDorInStore(this) + File.separator +"ZhaiDaiSource" + File.separator + "head.jpg";
System.out.println("sdorInner = "+sdorInner);
System.out.println(s.equals("hello"));
}
}
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