[Android开发]Android 读取用户logcat日志

在一个服务中开启logcat程序，然后读取

public void onCreate() {
super.onCreate();
new Thread(){
public void run() {
try {
File file = new File(Environment.getExternalStorageDirectory(),"log.txt");
FileOutputStream fos = new FileOutputStream(file);
Process process = Runtime.getRuntime().exec("logcat");
InputStream is = process.getInputStream();
BufferedReader br = new BufferedReader(new InputStreamReader(is));
String line;
while((line = br.readLine())!=null){
if(line.contains("I/ActivityManager")){
fos.write(line.getBytes());
fos.flush();
}
}
fos.close();
} catch (Exception e) {
e.printStackTrace();
}
};
}.start();
}