Android開發調試日誌工具類[支援儲存到SD卡]

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直接上代碼：

package com.example.callstatus;import java.io.File;import java.io.FileWriter;import java.io.IOException;import java.io.PrintWriter;import java.io.StringWriter;import java.net.UnknownHostException;import java.text.SimpleDateFormat;import java.util.Date;import android.annotation.SuppressLint;import android.os.Environment;import android.util.Log;/** * Android開發調試日誌工具類[支援儲存到SD卡]<br> * <br> *  * 須要一些許可權: <br> * <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> <br> * <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" /><br> *  * @author PMTOAM *  */@SuppressLint("SimpleDateFormat")public class MyLog{public static final String CACHE_DIR_NAME = "dPhoneLog";public static boolean isDebugModel = true;// 是否輸出日誌public static boolean isSaveDebugInfo = true;// 是否儲存調試日誌public static boolean isSaveCrashInfo = true;// 是否儲存報錯日誌public static void v(final String tag, final String msg){if (isDebugModel){Log.v(tag, "--> " + msg);}}public static void d(final String tag, final String msg){if (isDebugModel){Log.d(tag, "--> " + msg);}}public static void i(final String tag, final String msg){if (isDebugModel){Log.i(tag, "--> " + msg);}}public static void w(final String tag, final String msg){if (isDebugModel){Log.w(tag, "--> " + msg);}}/** * 調試日誌，便於開發跟蹤。
 * @param tag * @param msg */public static void e(final String tag, final String msg){if (isDebugModel){Log.e(tag, "--> " + msg);}if (isSaveDebugInfo){new Thread(){public void run(){write(time() + tag + " --> " + msg + "\n");};}.start();}}/** * try catch 時使用。上線產品可上傳反饋。
 * @param tag * @param tr */public static void e(final String tag, final Throwable tr){if (isSaveCrashInfo){new Thread(){public void run(){write(time() + tag + " [CRASH] --> "+ getStackTraceString(tr) + "\n");};}.start();}}/** * 擷取捕捉到的異常的字串 * @param tr * @return */public static String getStackTraceString(Throwable tr){if (tr == null){return "";}Throwable t = tr;while (t != null){if (t instanceof UnknownHostException){return "";}t = t.getCause();}StringWriter sw = new StringWriter();PrintWriter pw = new PrintWriter(sw);tr.printStackTrace(pw);return sw.toString();}/** * 標識每條日誌產生的時間 * @return */private static String time(){return "["+ new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date(System.currentTimeMillis())) + "] ";}/** * 以年月日作為記錄檔名 * @return */private static String date(){return new SimpleDateFormat("yyyy-MM-dd").format(new Date(System.currentTimeMillis()));}/** * 儲存到記錄檔 * @param content */public static synchronized void write(String content){try{FileWriter writer = new FileWriter(getFile(), true);writer.write(content);writer.close();}catch (IOException e){e.printStackTrace();}}/** * 擷取記錄檔路徑 * @return */public static String getFile(){File sdDir = null;if (Environment.getExternalStorageState().equals(android.os.Environment.MEDIA_MOUNTED))sdDir = Environment.getExternalStorageDirectory();File cacheDir = new File(sdDir + File.separator + CACHE_DIR_NAME);if (!cacheDir.exists())cacheDir.mkdir();File filePath = new File(cacheDir + File.separator + date() + ".txt");return filePath.toString();}}

Android開發調試日誌工具類[支援儲存到SD卡]