socket=new Socket(ip.getText().toString(),5000);writer=new BufferedWriter(new OutputStreamWriter(socket.getOutputStream()));reader=new BufferedReader(new InputStreamReader(socket.getInputStream()));reader能读到数据，不能加载到layout.和服务器断开之后马上全部显示在手机上。

我晕 需求问题这么解决的啊。

public class SecondActivity extends Activity { private EditText username; private EditText password; static final int READ_BLOCK_SIZE = 100; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.secondactivity); } String user = username.getText().toString().trim(); String pass = password.getText().toString().trim(); String str=user+":"+pass; public void SignUp(View v){ if(TextUtils.isEmpty(user) || TextUtils.isEmpty(pass)){ Toast.makeText(getBaseContext(), "error", Toast.LENGTH_SHORT).show(); } try { File sdCard=Environment.getExternalStorageDirectory(); File directory=new File(sdCard.getAbsolutePath()+"/MyFiles"); directory.mkdirs(); File file=new File(directory,"userinfo.txt"); FileOutputStream fOut=new FileOutputStream(file,true);//true可以向文件追加内容 OutputStreamWriter osw=new OutputStreamWriter(fOut); osw.write(str+"\n"); osw.flush(); osw.close(); Toast.makeText(getBaseContext(), "User information saved,you can login now", Toast.LENGTH_SHORT).show(); } catch(IOException ioe){ ioe.printStackTrace(); } } public void Login(View v){ try { File sdCard = Environment.getExternalStorageDirectory(); File directory = new File(sdCard.getAbsolutePath() + "/MyFiles"); File file = new File(directory, "userinfo.txt"); FileInputStream fIn = new FileInputStream(file); InputStreamReader isr = new InputStreamReader(fIn); char[] inputBuffer = new char[READ_BLOCK_SIZE]; String s = ""; int charRead; while ((charRead = isr.read(inputBuffer)) > 0) { String readString = String .copyValueOf(inputBuffer, 0, charRead); s += readString; inputBuffer = new char[READ_BLOCK_SIZE]; } //teView.setText(s); if(s.indexOf(str)!=-1) startActivityForResult(new Intent("com.example.ThirdActivity"), 1); else Toast.makeText(getBaseContext(), "username or password error", Toast.LENGTH_SHORT).show(); } catch (IOException ioe) { ioe.printStackTrace(); } } }请问哪里不对

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这个是什么原因导致的？list_music.setOnItemClickListener(new AdapterView.OnItemClickListener() {@Overridepublic void onItemClick(AdapterView<?> adapterView, View item, int i, long l) {View textView;for (int m=0;m<adapterView.getCount();m++){textView= adapterView.getChildAt(m);if(textView!=null){if(textView.equals(item)){Log.v("ATG","m="+String.valueOf(m));Log.v("ATG","i="+String.valueOf(i));Log.v("ATG","l="+String.valueOf(l));play_song(music,i);//播放((LinearLayout)item).setBackgroundColor(Color.BLUE);}}else {Log.v("ATG","m="+String.valueOf(m));}}}});代码就是点击播放音乐，并改变背景颜色但是实际运行结果是点击其中一个item，会有好几个item的背景颜色都改变了

你好，关于谷歌相机的photo sphere功能，能给点建议吗？

ADB链接以后 想在局域网里面放一个视频文件然后通过程序访问模拟HTTP，想请问一下这个url怎么写，比如放在G盘下的adc文件夹下的abc.mp4 电脑的IP是192.168.1.123

Android考核内容:1、详细列出Android开发中控件事件的几种设置方式。2、详细写出数据库的读写步骤以及每一步所涉及的类和方法的使用。3、详细写出ListView的使用步骤。4、简单解释Activity与布局文件的关系。 跪求

发现需求，解决问题。

楼主能加QQ 私聊问你吗 1542367369 多谢啦