尝试在android中更改gridview的字体大小

Question

我试图改变我的gridview在我的android应用程序的字体大小。

这是我的代码，使gridview:

GridView gridview = (GridView)findViewById(R.id.gridView);
        ArrayAdapter<String> arrayadapter = new ArrayAdapter<String>(
                this,
                R.layout.customstyle, 
                Rows );
        gridview.setNumColumns(14);
        gridview.setAdapter(arrayadapter);

，这里是代码从我的自定义样式。xml文档

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:orientation="vertical" >
    <TextView
        android:id="@+id/grid_item_label"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="8dip" >
    </TextView>
</LinearLayout>

程序目前崩溃时，我试图让它应用我的风格，但它的工作原理发现，当它使用标准的风格。所以谁能帮我修复这个样式，这样我就可以设置字体大小了由于

Answer 1

ArrayAdapter应具有TextView类型的资源id

删除父LinearLayout，你的布局应该像

像这样使用

customStyle.xml

<?xml version="1.0" encoding="utf-8"?>
  <TextView
         xmlns:android="http://schemas.android.com/apk/res/android"
        android:id="@+id/grid_item_label"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textSize="8sp" >
    </TextView>

将您的自定义布局替换为上面的，将解决您的问题。

Answer 2

您可以创建自己的自定义适配器，如下所示:

public class MyAdapter extends BaseAdapter{
private Context mContext;
private String[] text = {};
private Integer[] mThumbIds = {};
public MyAdapter(Context c,String[] text)
{
    mContext = c;
    this.text = text;
}
public int getCount()
{
    return mThumbIds.length;
}
public Object getItem(int position)
{
    return position;
}
public long getItemId(int position)
{
    return position;
}
public View getView(int position, View convertView, ViewGroup parent)
{
    View myView = convertView;
    if (convertView == null)
    {
        LayoutInflater li = (LayoutInflater)mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        myView =li.inflate(R.layout.grid_item, null);
        TextView tv = (TextView)myView.findViewById(R.id.grid_itemTxt);
        tv.setText(text[position]);
    }
    return myView;
}

<<p> GridItem布局/strong>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id = "@+id/gridItem"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:orientation= "vertical"
    android:gravity="center_horizontal" >
    <TextView 
        android:id="@+id/grid_itemTxt"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:gravity="center"
        android:textColor="#6075B2">
    </TextView>
</LinearLayout>

然后onCreate()方法:

private GridView grid;
private String text[] = {"hello","world","here","is","a","grid","view"};
grid = (GridView)findViewById(R.id.yourGridLayoutXml);
grid.setAdapter(new MyAdapter(this, text));

注意: MyAdapter是一个扩展了BaseAdataper的java类