里面DraggableGridView显示布局 [英] Displaying layouts inside DraggableGridView

问题描述

我试图使图片+标题对的电网，用户将能够通过拖放放重新排列;下降。要做到这一点，我使用DraggableGridView - 。 https://github.com/thquinn/DraggableGridView

虽然我可以显示TextViews和ImageViews和重新排列，那一刻我尝试将它们连接在一个布局都停止显示。

所以，图像和字幕解析XML之后，这个作品：

 为（ImagePair对：对）{
    电视=新的TextView（本）;
    tv.setText（pair.getText（））;    URL = IMAGEURL新的URL（pair.getURL（））;
    BMP位图= BitmapFactory.de codeStream（imageURL.openConnection（）的getInputStream（））;
    IMV =新ImageView的（本）;
    imv.setImageBitmap（BMP）;    dgv.addView（电视）;
    dgv.addView（IMV）;
 

和它显示文本和图像的网格，但它们未配对 - 可以切换文本的地方与图像等

。

当我尝试插入包含图像+文字布局：

 为（ImagePair对：对）{    BMP位图= BitmapFactory.de codeStream（imageURL.openConnection（）的getInputStream（））;    LayoutInflater李= getLayoutInflater（）;
    视图V = li.inflate（R.layout.image，NULL）;    TextView的txtv =（TextView中）v.findViewById（R.id.ltext）;    txtv.setText（pair.getText（））;    ImageView的IV =（ImageView的）v.findViewById（R.id.limage）;
    iv.setImageBitmap（BMP）;    dgv.addView（五）;
 

没有显示。我可以做任何显示单一视图

  this.setContentView（V）;
 

和它会正确显示图像+标题对，而是试图将它们插入到黑屏电网结果，尽管电网报告9名儿童present。

我使用的布局：

 ＆LT;？XML版本=1.0编码=UTF-8＆GT？;
＆LT; TableLayout的xmlns：机器人=htt​​p://schemas.android.com/apk/res/android
    机器人：layout_width =WRAP_CONTENT
    机器人：layout_height =WRAP_CONTENT
    机器人：方向=垂直＆GT;
    ＆LT;的TableRow的android：layout_width =WRAP_CONTENT
        机器人：layout_height =WRAP_CONTENT＆GT;    ＆LT; ImageView的
        机器人：ID =@ + ID / limage
        机器人：layout_width =WRAP_CONTENT
        机器人：layout_height =WRAP_CONTENT＆GT;
    ＆LT; / ImageView的＆GT;    ＆LT; /＆的TableRow GT;    ＆LT;的TableRow的android：layout_width =WRAP_CONTENT
        机器人：layout_height =WRAP_CONTENT＆GT;    ＆LT;的TextView
        机器人：ID =@ + ID / LTEXT
        机器人：layout_width =WRAP_CONTENT
        机器人：layout_height =WRAP_CONTENT
        机器人：文字=TextView的
        机器人：重力=CENTER_HORIZONTAL
        机器人：textColorHighlight =＃656565＆GT;
    ＆LT; / TextView的＆GT;
    ＆LT; /＆的TableRow GT;＆LT; / TableLayout＆GT;
 

解决方案

添加code中的一行DraggableGridView.java解决问题。打开DraggableGridView.java并添加以下行

  getChildAt（I）.measure（MeasureSpec.makeMeasureSpec（childSize，MeasureSpec.EXACTLY），MeasureSpec.makeMeasureSpec（childSize，MeasureSpec.EXACTLY））;
 

在

  getChildAt（I）.layout（xy.x，xy.y，xy.x + childSize，xy.y + childSize）;
 

希望有所帮助。
从另一个帖子的链接找到解决办法：<一href=\"http://stackoverflow.com/questions/13699426/imageview-and-textview-not-displaying-in-view\">Imageview而TextView的不是视图中显示？

I'm trying to make a Grid of Image + caption pairs, that the user will be able to rearrange by drag&drop. To do this I'm using DraggableGridView - https://github.com/thquinn/DraggableGridView .

While I can display TextViews and ImageViews and rearrange them, the moment I try to connect them in one layout everything stops displaying.

So after parsing an XML with images and captions this works:

for(ImagePair pair : pairs){
    tv = new TextView(this);
    tv.setText(pair.getText());

    URL imageURL = new URL(pair.getURL());
    Bitmap bmp = BitmapFactory.decodeStream(imageURL.openConnection().getInputStream());
    imv = new ImageView(this);
    imv.setImageBitmap(bmp);

    dgv.addView(tv);
    dgv.addView(imv);

And it displays a grid of Texts and Images, but they are not paired - you can switch the place of text with an image etc.

When I try inserting a Layout containing an Image+ Text:

for(ImagePair pair : pairs){

    Bitmap bmp = BitmapFactory.decodeStream(imageURL.openConnection().getInputStream());

    LayoutInflater li = getLayoutInflater();
    View v = li.inflate(R.layout.image, null);

    TextView txtv = (TextView)v.findViewById(R.id.ltext);  

    txtv.setText(pair.getText());

    ImageView iv = (ImageView)v.findViewById(R.id.limage);
    iv.setImageBitmap(bmp);

    dgv.addView(v);

Nothing displays. I can display any single view by doing

this.setContentView(v);

And it will display a image+caption pair properly, but trying to insert them into the grid results in a black screen, despite the grid reporting 9 children present.

The layout I'm using:

<?xml version="1.0" encoding="utf-8"?>
<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:orientation="vertical" >
    <TableRow android:layout_width="wrap_content"
        android:layout_height="wrap_content">    

    <ImageView
        android:id="@+id/limage"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content">
    </ImageView>

    </TableRow>

    <TableRow android:layout_width="wrap_content"
        android:layout_height="wrap_content">  

    <TextView
        android:id="@+id/ltext"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="TextView"
        android:gravity="center_horizontal"
        android:textColorHighlight="#656565">
    </TextView>
    </TableRow>   

</TableLayout>

解决方案

Adding one line of code in DraggableGridView.java fixes the problem. Open DraggableGridView.java and add the following line

getChildAt(i).measure(MeasureSpec.makeMeasureSpec(childSize, MeasureSpec.EXACTLY), MeasureSpec.makeMeasureSpec(childSize, MeasureSpec.EXACTLY));

before

getChildAt(i).layout(xy.x, xy.y, xy.x + childSize, xy.y + childSize);

Hope that helps. Found solution from another post link:Imageview and textview not displaying in view?

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