项目遇到一个问题需要排查，由于是偶现的问题，所以需要打印特定的日志并保存下来，但是并不需要将所有的Log都保存下来，
那么就需要一个小工具来解决这个问题了。
逻辑也很简单，当需要写入日志时，调用函数进行写入即可。简单封装下的代码如下，便于使用。
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| public class LogcatHelper {
private static final String FOLDER_NAME = "TestAppName";
private static final String FILE_NAME = "TestAppName";
private static LogcatHelper INSTANCE = null;
private static String PATH_LOGCAT;
private LogDumper mLogDumper = null;
private int mPId;
private void init(Context context) {
if (Environment.getExternalStorageState().equals(
Environment.MEDIA_MOUNTED)) {
PATH_LOGCAT = Environment.getExternalStorageDirectory()
.getAbsolutePath() + File.separator + FOLDER_NAME;
} else {
PATH_LOGCAT = context.getFilesDir().getAbsolutePath()
+ File.separator + FOLDER_NAME;
}
File file = new File(PATH_LOGCAT);
if (!file.exists()) {
file.mkdirs();
}
}
public static LogcatHelper getInstance(Context context) {
if (INSTANCE == null) {
INSTANCE = new LogcatHelper(context);
}
return INSTANCE;
}
private LogcatHelper(Context context) {
init(context);
mPId = android.os.Process.myPid();
}
public void start() {
if (mLogDumper == null)
mLogDumper = new LogDumper(String.valueOf(mPId), PATH_LOGCAT);
mLogDumper.start();
}
public void stop() {
if (mLogDumper != null) {
mLogDumper.stopLogs();
mLogDumper = null;
}
}
private class LogDumper extends Thread {
private FileWriter writer;
public LogDumper(String pid, String dir) {
try {
writer = new FileWriter(new File(dir, FILE_NAME + "-" + MyDate.getFileName() + ".log"), true);
} catch (FileNotFoundException e) {
e.printStackTrace();
Timber.e(e);
} catch (IOException e) {
e.printStackTrace();
}
}
public void stopLogs() {
try {
writer.close();
} catch (IOException e) {
e.printStackTrace();
}
}
@SuppressLint("CheckResult")
@Override
public void run() {
RxBus.register(LogData.class)
.subscribe(re -> {
if (writer != null) {
writer.write(re.getData() + "\n");
writer.flush();
}
}, ErrorHandlers.high()::handle);
}
}
public static class MyDate {
public static String getFileName() {
SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
String date = format.format(new Date(System.currentTimeMillis()));
return date;
}
public static String getDateEN() {
SimpleDateFormat format1 = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss:SSS");
String date1 = format1.format(new Date(System.currentTimeMillis()));
return date1;
}
}
public static class LogData {
private String data;
public LogData(String data) {
this.data = MyDate.getDateEN() + " " + data;
}
public String getData() {
return data;
}
public void setData(String data) {
this.data = data;
}
}
}
|