Question

我使用gridview在全屏显示两列和三行中的6个项目。但它始终显示在scrollview中。为此，找到总屏幕高度（像素）然后在每行中指定（1/3）高度但它始终占据整个显示高度，包括状态栏和状态栏。动作栏高度。如何找到没有状态的屏幕高度＆amp;行动吧。我在各种博客中探讨了它，但没有工作。我也支持libray v4＆amp; v7 to sho map＆amp;行动吧。

activity_main.xml中

<GridView 
     xmlns:android="http://schemas.android.com/apk/res/android" 
     android:numColumns="2"
     android:gravity="center"
     android:columnWidth="150dp"
     android:stretchMode="columnWidth"
     android:layout_width="fill_parent"
     android:layout_height="fill_parent"
     android:id="@+id/grid"
     android:background="#A1A1A1"
     android:horizontalSpacing="1dp"
     android:verticalSpacing="1dp"/>

每个网格视图

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:gravity="center"
android:background="#BABABA"
android:orientation="vertical">
<ImageView
    android:id="@+id/grid_image"
    android:layout_width="65dp"
    android:layout_height="65dp"
    android:gravity="center"
    android:layout_gravity="center"/>
<TextView
    android:id="@+id/grid_text"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="center"
    android:gravity="center"
    android:textSize="19sp" />

MainActivity.java

    public static int height1;
GridView grid;
 String[] web = {"Browse","Important Date","Paper Status","Running Session","Accepted Paper","Map"};
 int[] imageId ={R.drawable.ic_action_search,R.drawable.running_session,R.drawable.paper_status,R.drawable.my_program,R.drawable.reading_list,R.drawable.ic_action_map};
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    getSupportActionBar().setBackgroundDrawable(new ColorDrawable(Color.parseColor("#2C5197")));

    // determined the screen pixel
    DisplayMetrics metrics=new DisplayMetrics();
    getWindowManager().getDefaultDisplay().getMetrics(metrics);
    height1=metrics.heightPixels;

    //determined the screen pixel

    CustomGrid adapter = new CustomGrid(MainActivity.this, web, imageId);
    grid=(GridView)findViewById(R.id.grid);
    grid.setAdapter(adapter);

} }

这是适配器类 CustomGrid.java

public class CustomGrid extends BaseAdapter{
private Context mContext;
private final String[] web;
private final int[] Imageid;
  public CustomGrid(Context c,String[] web,int[] Imageid ) {
      mContext = c;
      this.Imageid = Imageid;
      this.web = web;
  }
@Override
public int getCount() {
  // TODO Auto-generated method stub
  return web.length;
}
@Override
public Object getItem(int position) {
  // TODO Auto-generated method stub
  return null;
}
@Override
public long getItemId(int position) {
  // TODO Auto-generated method stub
  return 0;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
  // TODO Auto-generated method stub
  View grid;
  LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
  if (convertView == null) {
    grid = new View(mContext);
    grid = inflater.inflate(R.layout.each_grid_view, null);
    TextView textView = (TextView) grid.findViewById(R.id.grid_text);
    ImageView imageView = (ImageView)grid.findViewById(R.id.grid_image);
    textView.setText(web[position]);
    imageView.setImageResource(Imageid[position]);

    //for match with the screen
    grid.setLayoutParams(new GridView.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,MainActivity.height1/3));

    } else {
        grid = (View) convertView;
    }
  return grid;
}

}

Answer 1

我不会以编程方式计算指标，而是让操作系统自动计算滚动条是否应该出现，具体取决于您的网格视图是大于还是小于实际屏幕。通常，使用ScrollView并将GridView嵌套在其中：

<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content">

也许您还应该将GridView的layout_height配置更改为 wrap_content ，这样它就不会填满整个高度：

<GridView
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"

Lubos

GridView项目总是以可滚动的方式显示？

1 个答案: