我在一个按钮（大过程）中有一个进程 . 我想用diferents值更新TextView . 喜欢：
-
正在连接......
-
接收档案......
-
完成......
等等..
我正在使用setText（）; void，但我只得到setText（）;的最后一个值，在这种情况下：
estatEdit.setText（“Tareas completadas！”）;
这是我的代码......
public class sincroGeneral extends Activity implements OnClickListener {
private static final String CATEGORIA = "libro";
private static final String HOST = "192.168.1.165";
private static final int PORT = 9889;
private static final int PORTDATOS = 9888;
int filesize=6022386;
int bytesRead;
int current = 0;
byte [] mybytearray = new byte [filesize];
byte buffer[] = new byte[1024];
byte buffer2[] = new byte[1024];
byte bufferArxiu[] = new byte[2048];
int s;
int s2;
String Benvinguda;
String compra;
EditText estatEdit;
EditText editInflated;
File myfile;
SQLiteDatabase baseDatos;
LinearLayout mainLayout;
View view2;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle bundle) {
super.onCreate(bundle);
setContentView(R.layout.sincrolayout);
Button b = (Button) findViewById(R.id.BotoEnviarSincro);
b.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
Button b = (Button) findViewById(R.id.BotoEnviarSincro);
estatEdit = (EditText) findViewById(R.id.editSincro);
estatEdit.setText("Enviando petición...");
b.setClickable(false);
b.setFocusable(false);
b.setEnabled(false);
ProcesRebre();
b.setClickable(true);
b.setFocusable(true);
b.setEnabled(true);
}
});
}
private void mostrarMensaje(String mensaje)
{
Toast.makeText(this, mensaje, 500).show();
}
private void ProcesRebre()
{
Socket sockDatos = null;
Socket clientSocket = null;
DataOutputStream sortida;
DataInputStream entrada;
BufferedReader inFromServer;
DataOutputStream sortidaDatos;
DataInputStream entradaDatos;
BufferedReader inFromServerDatos;
try {
estatEdit.setText("Conectando...");
clientSocket = new Socket(HOST, PORT);
sortida = new DataOutputStream(clientSocket.getOutputStream());
entrada = new DataInputStream(clientSocket.getInputStream());
inFromServer = new BufferedReader(new InputStreamReader(clientSocket.getInputStream()));
sortida.writeBytes("FAS4-F@S-1-F@S- 1.0.152-F@S-");
Log.i("Enviat","OK");
clientSocket.setSoTimeout(30000);
s = entrada.read(buffer);
String str = new String(buffer, "UTF8");
clientSocket.setSoTimeout(0);
Log.i("Rebut","OK");
if(str.contains("PDA1-F@S-"))
{
sockDatos = new Socket(HOST, PORTDATOS);
estatEdit.setText("Esperando archivo....");
sortidaDatos = new DataOutputStream(sockDatos.getOutputStream());
entradaDatos = new DataInputStream(sockDatos.getInputStream());
inFromServerDatos = new BufferedReader(new InputStreamReader(sockDatos.getInputStream()));
sortidaDatos.writeBytes("FAS4-F@S-1-F@S- 1.0.150-F@S-");
if(sockDatos.isConnected())
{
System.out.println("Conectat amb port 9888");
}
File carpetaSincro = new File(Environment.getExternalStorageDirectory()+"/OrdersCE/Syncro/");
carpetaSincro.mkdirs();
File ArxiuSincro = new File (Environment.getExternalStorageDirectory()+"/OrdersCE/Syncro/sincroorders.zip");
if(ArxiuSincro.exists())
{
ArxiuSincro.delete();
}
File ArxiuSincro2 = new File (Environment.getExternalStorageDirectory()+"/OrdersCE/Syncro/sincroorders.zip");
ArxiuSincro2.createNewFile();
sortida.writeBytes("FAS2-F@S-");
String str2= "";
clientSocket.setSoTimeout(30000);
while(true && (!str2.contains("PDA7-F@S-") && !str2.contains("PDAERR1-F@S-")))
{
s2 = entrada.read(buffer2);
str2 = new String(buffer2, "UTF8");
}
clientSocket.setSoTimeout(0);
String replace1 = str2.replace("PDA7-F@S-", "");
String replace2 = replace1.replace(" ", "");
String tamanyArxiu = replace2.replace("-F@S-ZIP","");
int bufferZip = Integer.parseInt(tamanyArxiu);
boolean in;
s2 = 0;
sockDatos.setSoTimeout(30000);
RandomAccessFile archivo = new RandomAccessFile(Environment.getExternalStorageDirectory()+"/OrdersCE/Syncro/sincroorders.zip", "rw");
long tamArxActual = 0;
while(bufferZip>=tamArxActual)
{
sockDatos.setSoTimeout(10000);
s2 = entradaDatos.read(bufferArxiu);
estatEdit.setText("Recibiendo archivo....");
archivo.write(bufferArxiu);
tamArxActual = archivo.length();
Thread.sleep(2);
}
sockDatos.setSoTimeout(0);
estatEdit.setText("Archivo recibido");
str2 = "";
clientSocket.setSoTimeout(30000);
while(true && (!str2.contains("PDA3-F@S-") && !str2.contains("PDAERR1-F@S-")))
{
s2 = entrada.read(buffer2);
str2 = new String(buffer2, "UTF8");
}
clientSocket.setSoTimeout(0);
if(str2.contains("PDA3-F@S-"))
{
sortida.writeBytes("FAS7-F@S-");
Thread.sleep(2000);
sortida.writeBytes("FAS6-F@S-");
}
sockDatos.close();
clientSocket.close();
String pathZip = Environment.getExternalStorageDirectory()+"/OrdersCE/Syncro/sincroorders.zip";
String directoriExtraccio = Environment.getExternalStorageDirectory()+"/OrdersCE/Syncro/";
String pathTxt = Environment.getExternalStorageDirectory()+"/OrdersCE/Syncro/SincrofitPC.txt";
UnzipUtility unzipper = new UnzipUtility();
try {
unzipper.unzip(pathZip, directoriExtraccio);
} catch (Exception ex) {
System.out.print("No s'ha pogut descomprimir l'arxiu");
ex.printStackTrace();
}
File f = new File(Environment.getExternalStorageDirectory()+"/OrdersCE/Syncro/SincrofitPC.dll");
f.renameTo(new File(Environment.getExternalStorageDirectory()+"/OrdersCE/Syncro/SincrofitPC.txt"));
importarSincro();
}
} catch (UnknownHostException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
private void importarSincro() throws SQLException, IOException
{
int contador = 0;
String LiniaSQL;
FileInputStream fstream = new FileInputStream(Environment.getExternalStorageDirectory()+"/OrdersCE/Syncro/SincrofitPC.txt");
DataInputStream DataInFile = new DataInputStream(fstream);
BufferedReader br = new BufferedReader(
new InputStreamReader(new FileInputStream(Environment.getExternalStorageDirectory()+"/OrdersCE/Syncro/SincrofitPC.txt"), "Latin-1"));
String FinalSQL = "";
baseDatos = openOrCreateDatabase("BBDD", MODE_WORLD_WRITEABLE, null);
baseDatos.execSQL("BEGIN");
while ((LiniaSQL = br.readLine()) != null) {
if(contador > 0)
{
FinalSQL = LiniaSQL.replace("***** ", "");
if(FinalSQL.contains("DELETE") && !FinalSQL.contains("DELETE FROM"))
{
FinalSQL = FinalSQL.replace("DELETE", "DELETE FROM");
try{
baseDatos.execSQL(FinalSQL);
}catch(SQLiteException e){
}
}
else
{
try{
baseDatos.execSQL(FinalSQL);
}catch(SQLiteException e){
}
}
LiniaSQL = "";
}
contador++;
}
baseDatos.execSQL("COMMIT");
estatEdit.setText("Tareas completadas!");
baseDatos.close();
}
/////////////////////////////////////////
public static String deserializeString(File file)
throws IOException {
int len;
char[] chr = new char[4096];
final StringBuffer buffer = new StringBuffer();
final FileReader reader = new FileReader(file);
try {
while ((len = reader.read(chr)) > 0) {
buffer.append(chr, 0, len);
}
} finally {
reader.close();
}
return buffer.toString();
}
public void onClick(View arg0) {
// TODO Auto-generated method stub
}
}
提前致谢！
大卫 .
3 回答
你正在主线程上执行一个网络操作，点了解这里是Android操作单个主线程所以如果你在服务/活动/内容提供商等上做任何耗时的操作，它将阻止你的主线程，因此所有的东西将看起来他们被阻止/无响应，你会在几秒钟后收到一条ANR消息 .
总之，请遵循这种方法
将网络扩展代码移动到单独的线程
实现Mesasge处理机制以更新主线程上的UI（Handler / Looper）
进一步帮助Android为此提供了一个类AsynTask . 您可以在doInBackground（）中执行操作，条件是您可以通过onProcessUpdate（）更新UI
希望这可以帮助 .
Internet连接是阻止操作，即它阻止UI直到操作完成（这就是为什么只能看到最后一次更新） . 您必须将其移动到线程（甚至更好地移动到AsyncTask） . 但是你得到另一个问题，你无法从主线程外部更新UI . 因此，您必须使用Handler来更新UI .
如果您在UI线程上运行此过程，可能会导致提示“Applicaiton”对话框
没有回应“ . 所以我建议这个任务必须在AsyncTask或服务中完成
您可以更新文本视图
例如，下载文件