误差在图像URL的GridView [英] error in gridview with image url

问题描述

林新到Android ..

IM具有图像URL面临网格布局的一个问题。

我的code ..

 公共类的行为扩展活动{
    静态字符串uri1 =htt​​ps://i3.ytimg.com/vi/bQaWsVQSLdY/default.jpg;
    静态字符串uri2 =htt​​ps://i4.ytimg.com/vi/cJQCniWQdno/mqdefault.jpg;
    静态字符串uri3 =htt​​ps://i1.ytimg.com/vi/D8dA4pE5hEY/mqdefault.jpg;
    公共静态的String [] =网址{uri1，uri2，uri3};
    公共位图位图;    @覆盖
    公共无效的onCreate（捆绑savedInstanceState）{
        super.onCreate（savedInstanceState）;
        的setContentView（R.layout.main）;
        GridView控件GRD =（GridView控件）findViewById（R.id.gridView1）;
        grd.setAdapter（新ImageAdapter（本））;
        grd.setOnItemClickListener（新OnItemClickListener（）{
            公共无效onItemClick（适配器视图＆LT;＆GT;母公司，视图V，INT POS机，
                    长ID）{
                Toast.makeText（getBaseContext（），PIC+（POS + 1）+选择，
                        Toast.LENGTH_SHORT）.show（）;
            }
        }）;
    }    公共类ImageAdapter延伸BaseAdapter {
        私人上下文的背景下;
        私人诠释itemBackground;        ImageAdapter（上下文C）{
            上下文= C;
            TypedArray A = obtainStyledAttributes（R.styleable.Gallery1）;
            itemBackground = a.getResourceId（
                    R.styleable.Gallery1_android_galleryItemBackground，0）;
            a.recycle（）;
        }        公众诠释的getCount（）{
            返回urls.length;
        }        公共对象的getItem（INT POS）{
            返回POS;
        }        众长getItemId（INT POS）{
            返回POS;
        }        公共查看getView（INT POS，查看简历的ViewGroup以及VG）{
            位图位图= DownloadImage（网址[POS]）;
            ImageView的ImageView的=新ImageView的（上下文）;
            imageview.setImageBitmap（位图）;
            返回简历;
        }        私人位图DownloadImage（字符串URL）{
            最后弦乐URL1 =网址;
            新的Thread（）{
                公共无效的run（）{
                    在的InputStream = NULL;
                    消息味精= Message.obtain（）;
                    msg.what = 1;
                    尝试{
                        在= OpenHttpConnection（URL1）;
                        位图位图= BitmapFactory.de codeStream（中）;
                        束B =新包（）;
                        b.putParcelable（位图，位图）;
                        msg.setData（二）;
                        附寄（）;
                    }赶上（IOException异常E1）{
                        // TODO自动生成catch块
                        e1.printStackTrace（）;
                    }
                }
            }。开始（）;
            返回位图;
        }        私人的InputStream OpenHttpConnection（字符串urlString）
                抛出IOException
            在的InputStream = NULL;
            INT响应= -1;
            网址URL =新的URL（urlString）;
            康涅狄格州的URLConnection = url.openConnection（）;
            如果（！（康涅狄格州的instanceof HttpURLConnection类））
                抛出新IOException异常（不是一个HTTP连接）;
            尝试{
                HttpURLConnection的httpConn =（HttpURLConnection类）美国康涅狄格州;
                httpConn.setAllowUserInteraction（假）;
                httpConn.setInstanceFollowRedirects（真）;
                httpConn.setRequestMethod（GET）;
                httpConn.connect（）;
                响应= httpConn.getResponse code（）;
                如果（响应== HttpURLConnection.HTTP_OK）{
                    在= httpConn.getInputStream（）;
                }
            }赶上（例外前）{
                抛出新IOException异常（错误连接）;
            }
            返回;
        }
    }
}
 

logcat的

  E / AndroidRuntime（832）：在
   android.view.ViewGroup.measureChildWithMargins（ViewGroup.java:3138）
   E / AndroidRuntime（832）：在
   android.widget.LinearLayout.measureChildBeforeLayout（LinearLayout.java:1017）
    E / AndroidRuntime（832）：在
    android.widget.LinearLayout.measureVertical（LinearLayout.java:386）
     E / AndroidRuntime（832）：在
    android.widget.LinearLayout.onMeasure（LinearLayout.java:309）
     E / AndroidRuntime（832）：在android.view.View.measure（View.java:8313）
     E / AndroidRuntime（832）：在
     android.view.ViewGroup.measureChildWithMargins（ViewGroup.java:3138）
      E / AndroidRuntime（832）：在android.widget.FrameLayout.onMeasure（FrameLayout.java:250）
     E / AndroidRuntime（832）：在android.view.View.measure（View.java:8313）
     E / AndroidRuntime（832）：在
      android.widget.LinearLayout.measureVertical（LinearLayout.java:531）
      E / AndroidRuntime（832）：在
      android.widget.LinearLayout.onMeasure（LinearLayout.java:309）
      E / AndroidRuntime（832）：在android.view.View.measure（View.java:8313）
      E / AndroidRuntime（832）：在
      android.view.ViewGroup.measureChildWithMargins（ViewGroup.java:3138）
      E / AndroidRuntime（832）：在android.widget.FrameLayout.onMeasure（FrameLayout.java:250）
      E / AndroidRuntime（832）：在android.view.View.measure（View.java:8313）
      E / AndroidRuntime（832）：在android.view.ViewRoot.performTraversals（ViewRoot.java:839）
      E / AndroidRuntime（832）：在android.view.ViewRoot.handleMessage（ViewRoot.java:1859）
      E / AndroidRuntime（832）：在android.os.Handler.dispatchMessage（Handler.java:99）
       E / AndroidRuntime（832）：在android.os.Looper.loop（Looper.java:123）
       E / AndroidRuntime（832）：在android.app.ActivityThread.main（ActivityThread.java:3683）
       E / AndroidRuntime（832）：在java.lang.reflect.Method.invokeNative（本机方法）
       E / AndroidRuntime（832）：在java.lang.reflect.Method.invoke（Method.java:507）
       E / AndroidRuntime（832）：在
       com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run（ZygoteInit.java:839）
        E / AndroidRuntime（832）：在
       com.android.internal.os.ZygoteInit.main（ZygoteInit.java:597）
        E / AndroidRuntime（832）：在dalvik.system.NativeStart.main（本机方法）
 

解决方案

我建议你阅读本：的 HTTP：//xjaphx.word$p$pss.com/2011/06/12/custom-grid-view-of-applications/

Im new to android..

im facing a problem in grid layout with image url..

my code..

public class act extends Activity {
    static String uri1 = "https://i3.ytimg.com/vi/bQaWsVQSLdY/default.jpg";
    static String uri2 = "https://i4.ytimg.com/vi/cJQCniWQdno/mqdefault.jpg";
    static String uri3 = "https://i1.ytimg.com/vi/D8dA4pE5hEY/mqdefault.jpg";
    public static String[] urls = { uri1, uri2, uri3 };
    public Bitmap bitmap;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        GridView grd = (GridView) findViewById(R.id.gridView1);
        grd.setAdapter(new ImageAdapter(this));
        grd.setOnItemClickListener(new OnItemClickListener() {
            public void onItemClick(AdapterView<?> parent, View v, int pos,
                    long id) {
                Toast.makeText(getBaseContext(), "pic" + (pos + 1) + "select ",
                        Toast.LENGTH_SHORT).show();
            }
        });
    }

    public class ImageAdapter extends BaseAdapter {
        private Context context;
        private int itemBackground;

        ImageAdapter(Context c) {
            context = c;
            TypedArray a = obtainStyledAttributes(R.styleable.Gallery1);
            itemBackground = a.getResourceId(
                    R.styleable.Gallery1_android_galleryItemBackground, 0);
            a.recycle();
        }

        public int getCount() {
            return urls.length;
        }

        public Object getItem(int pos) {
            return pos;
        }

        public long getItemId(int pos) {
            return pos;
        }

        public View getView(int pos, View cv, ViewGroup vg) {
            Bitmap bitmap = DownloadImage(urls[pos]);
            ImageView imageview = new ImageView(context);
            imageview.setImageBitmap(bitmap);
            return cv;
        }

        private Bitmap DownloadImage(String URL) {
            final String URL1 = URL;
            new Thread() {
                public void run() {
                    InputStream in = null;
                    Message msg = Message.obtain();
                    msg.what = 1;
                    try {
                        in = OpenHttpConnection(URL1);
                        Bitmap bitmap = BitmapFactory.decodeStream(in);
                        Bundle b = new Bundle();
                        b.putParcelable("bitmap", bitmap);
                        msg.setData(b);
                        in.close();
                    } catch (IOException e1) {
                        // TODO Auto-generated catch block
                        e1.printStackTrace();
                    }
                }
            }.start();
            return bitmap;
        }

        private InputStream OpenHttpConnection(String urlString)
                throws IOException {
            InputStream in = null;
            int response = -1;
            URL url = new URL(urlString);
            URLConnection conn = url.openConnection();
            if (!(conn instanceof HttpURLConnection))
                throw new IOException("Not an HTTP connection");
            try {
                HttpURLConnection httpConn = (HttpURLConnection) conn;
                httpConn.setAllowUserInteraction(false);
                httpConn.setInstanceFollowRedirects(true);
                httpConn.setRequestMethod("GET");
                httpConn.connect();
                response = httpConn.getResponseCode();
                if (response == HttpURLConnection.HTTP_OK) {
                    in = httpConn.getInputStream();
                }
            } catch (Exception ex) {
                throw new IOException("Error connecting");
            }
            return in;
        }
    }
}

Logcat

       E/AndroidRuntime(832):   at 
   android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138)
   E/AndroidRuntime(832):   at 
   android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1017)
    E/AndroidRuntime(832):  at 
    android.widget.LinearLayout.measureVertical(LinearLayout.java:386)
     E/AndroidRuntime(832):     at 
    android.widget.LinearLayout.onMeasure(LinearLayout.java:309)
     E/AndroidRuntime(832):     at android.view.View.measure(View.java:8313)
     E/AndroidRuntime(832):     at 
     android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138)
      E/AndroidRuntime(832):    at android.widget.FrameLayout.onMeasure(FrameLayout.java:250)
     E/AndroidRuntime(832):     at android.view.View.measure(View.java:8313)
     E/AndroidRuntime(832):     at 
      android.widget.LinearLayout.measureVertical(LinearLayout.java:531)
      E/AndroidRuntime(832):    at 
      android.widget.LinearLayout.onMeasure(LinearLayout.java:309)
      E/AndroidRuntime(832):    at android.view.View.measure(View.java:8313)
      E/AndroidRuntime(832):    at 
      android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:3138)
      E/AndroidRuntime(832):    at android.widget.FrameLayout.onMeasure(FrameLayout.java:250)
      E/AndroidRuntime(832):    at android.view.View.measure(View.java:8313)
      E/AndroidRuntime(832):    at android.view.ViewRoot.performTraversals(ViewRoot.java:839)
      E/AndroidRuntime(832):    at android.view.ViewRoot.handleMessage(ViewRoot.java:1859)
      E/AndroidRuntime(832):    at android.os.Handler.dispatchMessage(Handler.java:99)
       E/AndroidRuntime(832):   at android.os.Looper.loop(Looper.java:123)
       E/AndroidRuntime(832):   at android.app.ActivityThread.main(ActivityThread.java:3683)
       E/AndroidRuntime(832):   at java.lang.reflect.Method.invokeNative(Native Method)
       E/AndroidRuntime(832):   at java.lang.reflect.Method.invoke(Method.java:507)
       E/AndroidRuntime(832):   at 
       com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
        E/AndroidRuntime(832):  at 
       com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
        E/AndroidRuntime(832):  at dalvik.system.NativeStart.main(Native Method)

解决方案

I recommend to you to read this : http://xjaphx.wordpress.com/2011/06/12/custom-grid-view-of-applications/

这篇关于误差在图像URL的GridView的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！