This is rather strange. You only get the error message when you set a
break point? I'm not sure I understand what you mean.
resbonus(USOON.net) wrote:
> Hi ,everyone.I am using http connection demo,the following is the
> code.In the eclipse debugging mode, I can't get the error
> message.Eclipse recommended me like this
>
> Evaluations must contain either an expression or a block of well-
> formed statements
>
> when the break point is set at line 80.The eclipse version is 3.3.2
>
>
> java code:
>
> import java.io.BufferedInputStream;
> import java.io.BufferedReader;
> import java.io.DataInputStream;
> import java.io.DataOutputStream;
> import java.io.IOException;
> import java.io.InputStream;
> import java.io.InputStreamReader;
> import java.net.HttpURLConnection;
> import java.net.MalformedURLException;
> import java.net.URL;
> import java.net.URLConnection;
>
> import android.app.Activity;
> import android.content.Resources;
> import android.graphics.Bitmap;
> import android.graphics.BitmapFactory;
> import android.os.Bundle;
> import android.util.Log;
> import android.view.View;
> import android.widget.Button;
> import android.widget.ImageView;
> import android.widget.TextView;
>
> public class NetDemo extends Activity {
> private Button ok;
> private TextView tv1;
> HttpURLConnection uc;
> URL url;
> private static final String ip = "code.google.com/android/images/
> logo_android.gif";
> private static final String host = "";
> private static final String path = "http://"; + ip + host;
>
> ImageView view1;
> InputStream is;
> BufferedInputStream bis;
>
> /** Called when the activity is first created. */
> @Override
> public void onCreate(Bundle icicle) {
> super.onCreate(icicle);
> setContentView(R.layout.main);
>
> tv1 = (TextView) this.findViewById(R.id.tv1);
> ok = (Button) this.findViewById(R.id.ok);
> view1 = (ImageView) findViewById(R.id.icon);
>
> /*
> * Resources res=this.getResources();
> res.getDrawable(R.drawable.icon);
> * Bitmap bm = BitmapFactory.decodeResource(res,
> R.drawable.icon);
> * view1.setImageBitmap(bm);
> */
> ok.setOnClickListener(new View.OnClickListener() {
> public void onClick(View view) {
> openConn();
> sendRequest();
> getRespones();
> closeConn();
> }
> });
> }
>
> private void openConn() {
> try {
> url = new URL(path);
> uc = (HttpURLConnection) url.openConnection();
> uc.setDoInput(true);
> } catch (MalformedURLException e) {
> // TODO Auto-generated catch block
> e.printStackTrace();
> } catch (IOException e) {
> // TODO Auto-generated catch block
> e.printStackTrace();
> }
> }
>
> private void sendRequest() {
> try {
> uc.connect();
> } catch (IOException e) {
> System.out.println(e.getMessage());
> // TODO Auto-generated catch block
> e.printStackTrace();
> } catch (Exception e) {
> // TODO Auto-generated catch block
> e.printStackTrace();
> }
> }
>
> private void getRespones() {
> try {
> is = uc.getInputStream();
> Log.d("lenght", "" + uc.getContentLength());
> tv1.setText(uc.getContentLength() + "");
> bis = new BufferedInputStream(is);
> Bitmap bm = BitmapFactory.decodeStream(bis);
> view1.setImageBitmap(bm);
> } catch (IOException e1) {
> // TODO Auto-generated catch block
> e1.printStackTrace();
> }
> }
>
> private void closeConn() {
> try {
> uc.disconnect();
> if (null != bis) {
> bis.close();
> }
> if (null != is) {
> is.close();
> }
> } catch (IOException e) {
> // TODO Auto-generated catch block
> e.printStackTrace();
> }
> }
> }
>
>
> R.java
>
> public final class R {
> public static final class attr {
> }
> public static final class drawable {
> public static final int icon=0x7f020000;
> }
> public static final class id {
> public static final int confirm=0x7f050002;
> public static final int description=0x7f050001;
> public static final int email=0x7f050000;
> }
> public static final class layout {
> public static final int main=0x7f030000;
> public static final int user_reg=0x7f030001;
> }
> public static final class string {
> public static final int app_name=0x7f040000;
> public static final int confirm=0x7f040004;
> public static final int description=0x7f040002;
> public static final int edit_userinfo=0x7f040005;
> public static final int email=0x7f040001;
> public static final int menu_insert=0x7f040003;
> }
> }
>
>
>
> main.xml
>
> <?xml version="1.0" encoding="utf-8"?>
> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/
> android"
> androidrientation="vertical" android:layout_width="fill_parent"
> android:layout_height="fill_parent">
> <ImageView android:id="@+id/icon" android:layout_marginTop="4dip"
> android:layout_width="wrap_content"
> android:layout_height="wrap_content" />.
> <Button android:id="@+id/ok" android:text="OK"
> android:layout_width="wrap_content"
> android:layout_height="wrap_content" />
>
> <TextView android:id="@+id/tv1" android:layout_width="fill_parent"
> android:layout_height="wrap_content"
> android:text="Hello World, NetDemo"
> android:scrollbars="vertical" />
> </LinearLayout>
>
>
> Any refrence would be thankful.
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