由于 Google 分析会引发许多隐私问题，因此我实现了一个事件记录器。
我的第一个想法是将用户生成的事件跟踪到日志文件中，然后将它们发送回服务器，服务器将为系统管理员和应用工程师执行数据分析。
目前的想法是将 Logger 实例化为一个Application或一个Service类并使用这些元素onCreate并onDestroy安全地处理 LogFile。
解决方案非常简单：
MAX_NUM_LINES后，将日志发送到服务器（可能我会压缩正在生成的文本文件）我想知道在野外是否已经有任何东西我不知道你可能知道（类似ACRA）。每一个贡献都将受到赞赏。
这是我的实现。然而，任何更好的版本都非常感谢。TSG 对象只是我用作时间管理器的静态类。
只要您重新发布/编辑修改，就可以使用代码并对其进行改进。
public class Logger {
private BufferedWriter logFile;
private String nameFile;
public int fileLines;
private File fTemp;
private timeStampGenerator TSG;
private int LOG_LINES_LIMIT = 100;
private Object mutex;
public enum EventType {
BUTTON_PRESSED,
PAGE_VIEWED,
LOADED_ACTIVITY,
GENERIC_EVENT
}
public Logger (String fileName) throws IOException {
nameFile = fileName;
createLogFile();
fileLines = countLines();
TSG = new timeStampGenerator();
// This is our mutex to access to the file
mutex = new Object();
}
public void createLogFile() throws IOException{
fTemp = new File (nameFile);
if (!fTemp.exists()) {
fTemp.createNewFile();
}
logFile = new BufferedWriter(new FileWriter(nameFile, true));
}
public void LogEvent(EventType event, String comment, String value) {
String line = "";
line += TSG.getTimestampMillis();
line += ",";
line += event.name();
line += ",";
if (comment != "") {
line += comment.replaceAll(",", ";");
} else {
line += " ";
}
line += ",";
if (value != "") {
line += value.replaceAll(",", ";");
} else {
line += " ";
}
line += "\n";
synchronized (mutex) {
try {
logFile.append(line);
} catch (IOException e) {
// Do wathever you want here
}
fileLines++;
}
}
public int countLines() //throws IOException
{
InputStream is;
try {
is = new BufferedInputStream(new FileInputStream(nameFile));
} catch (FileNotFoundException e1) {
//let's consider it an empty file
return 0;
}
int count = 0;
boolean empty = true;
try {
int readChars = 0;
byte[] c = new byte[1024];
while ((readChars = is.read(c)) != -1) {
empty = false;
for (int i = 0; i < readChars; ++i) {
if (c[i] == '\n')
++count;
}
}
} catch(IOException e) {
// Do wathever you want here
}
try {
is.close();
} catch (IOException e) {
// Do wathever you want here
}
return (count == 0 && !empty) ? 1 : count;
}
public boolean isLimitReached() {
return (fileLines >= LOG_LINES_LIMIT);
}
public void close () {
flush();
try {
logFile.close();
} catch (IOException e) {
// Do wathever you want here
}
}
/**
* clear the content of the file
*/
public void clearFile() {
synchronized (mutex) {
if ( fTemp.delete() ) {
try {
createLogFile();
} catch (IOException e1) {
// Do wathever you want here
}
}
}
}
/**
* Get the full content of the file
* @return the content
*/
public String getContent() {
StringBuffer fileData = new StringBuffer();
synchronized (mutex) {
try {
BufferedReader reader = new BufferedReader(new FileReader( nameFile ));
char[] buf = new char[1024];
int numRead = 0;
while ((numRead = reader.read(buf)) != -1) {
String readData = String.valueOf(buf, 0, numRead);
fileData.append(readData);
}
reader.close();
} catch (IOException e) {
// Do wathever you want here
}
}
return fileData.toString();
}
public void flush() {
try {
logFile.flush();
} catch (IOException e) {
// Do wathever you want here
}
}
}