套路：. 字节流（如InputStream ）转换成字符流（如InputStreamReader）， 字符流转成缓冲字符流（如BufferedReader）； 缓冲字符流（如BufferedReader）直接拿去读写；
Url网络响应输入流
代码语言：javascript复制private void sendRequestWithHttpURLConnection() {
new Thread(new Runnable() {
@Override
public void run() {
HttpURLConnection connection = null;
BufferedReader reader = null;
try {
URL url = new URL("https://hao.360.cn/");
connection = (HttpURLConnection)url.openConnection();
connection.setRequestMethod("GET");
connection.setConnectTimeout(8000);
connection.setReadTimeout(8000);
InputStream in = connection.getInputStream();
//下面对获取的输入流进行读取
//InputStreamReader赋值给BufferedReader让其来读
reader = new BufferedReader(new InputStreamReader(in));
StringBuilder response = new StringBuilder();
String line;
//一行一行地读取并加进stringbuilder
while((line = reader.readLine()) != null){
response.append(line);
}
showResponse(response.toString());
Log.d("NetworkTest: ", response.toString());
} catch (IOException e) {
e.printStackTrace();
}finally{
if(reader !=null){
try {
reader.close();
} catch (IOException e) {
e.printStackTrace();
}
}
if(connection !=null){
connection.disconnect();
}
}
}
}).start();
}BlockCanary的文件流【写入文件】
代码语言：javascript复制BlockCanaryInternals.java
static String getPath() {
String state = Environment.getExternalStorageState();
String logPath = BlockCanaryInternals.getContext()
== null ? "" : BlockCanaryInternals.getContext().providePath();
if (Environment.MEDIA_MOUNTED.equals(state)
&& Environment.getExternalStorageDirectory().canWrite()) {
return Environment.getExternalStorageDirectory().getPath() logPath;
}
return Environment.getDataDirectory().getAbsolutePath() BlockCanaryInternals.getContext().providePath();
}
static File detectedBlockDirectory() {
File directory = new File(getPath());
if (!directory.exists()) {
directory.mkdirs();
}
return directory;
}
---------------------------------------------------------------------------------
//LogWriter.java
private static String save(String logFileName, String str) {
String path = "";
BufferedWriter writer = null;
try {
File file = BlockCanaryInternals.detectedBlockDirectory();
long time = System.currentTimeMillis();
path = file.getAbsolutePath() "/"
logFileName "-"
FILE_NAME_FORMATTER.format(time) ".log";
OutputStreamWriter out =
new OutputStreamWriter(new FileOutputStream(path, true), "UTF-8");
writer = new BufferedWriter(out);
writer.write(BlockInfo.SEPARATOR);
writer.write("**********************");
writer.write(BlockInfo.SEPARATOR);
writer.write(TIME_FORMATTER.format(time) "(write log time)");
writer.write(BlockInfo.SEPARATOR);
writer.write(BlockInfo.SEPARATOR);
writer.write(str);
writer.write(BlockInfo.SEPARATOR);
writer.flush();
writer.close();
writer = null;
} catch (Throwable t) {
Log.e(TAG, "save: ", t);
} finally {
try {
if (writer != null) {
writer.close();
}
} catch (Exception e) {
Log.e(TAG, "save: ", e);
}
}
return path;
}
