万一哪天要用找不到

使用 Runtime 获取日志并保存至 download 目录。

try {final String path = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS).getAbsolutePath() + File.separator;ArrayList<String> commandLine = new ArrayList<>();commandLine.add("logcat");//使用该参数可以让logcat获取日志完毕后终止进程commandLine.add("-d");commandLine.add("-v");commandLine.add("time");//如果使用commandLine.add(">");是不会写入文件，必须使用-f的方式commandLine.add("-f");commandLine.add(path + "log_" + System.currentTimeMillis() + ".txt");Process process = Runtime.getRuntime().exec(commandLine.toArray(new String[commandLine.size()]));BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(process.getInputStream()), 1024);String line = bufferedReader.readLine();
} catch (Exception e) {e.printStackTrace();
}