我想问如何根据我的需要将网格的大小调整为更大的大小。
这是我的 xml 文件：
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin"
tools:context=".MainActivity">
<GridView
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="@+id/grid_view"
android:columnWidth="150dp"
android:numColumns="auto_fit"
android:verticalSpacing="10dp"
android:horizontalSpacing="2dp"
android:stretchMode="columnWidth"
android:padding="20dp"
android:gravity="center" />
</RelativeLayout>
这是我的布局文件：
package com.example.steve_jobs;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.GridView;
import android.widget.Toast;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
GridView gridview = (GridView) findViewById(R.id.grid_view);
gridview.setAdapter(new ImageAdapter(this));
gridview.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}
图像适配器类：
package com.example.steve_jobs;
import android.content.Context;
import android.view.View;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;
import android.view.ViewGroup;
/** * 由 yash 于 2013 年 6 月 19 日创建。*/ 公共类 ImageAdapter 扩展 BaseAdapter{
private Context mContext;
public ImageAdapter(Context c) {
mContext = c;
}
public int getCount() {
return mThumbIds.length;
}
public Object getItem(int position) {
return null;
}
public long getItemId(int position) {
return 0;
}
// create a new ImageView for each item referenced by the Adapter
public View getView(int position, View convertView, ViewGroup parent) {
ImageView imageView;
if (convertView == null) { // if it's not recycled, initialize some attributes
imageView = new ImageView(mContext);
imageView.setLayoutParams(new GridView.LayoutParams(85, 85));
imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
imageView.setPadding(8, 8, 8, 8);
} else {
imageView = (ImageView) convertView;
}
imageView.setImageResource(mThumbIds[position]);
return imageView;
}
// references to our images
private Integer[] mThumbIds = {
R.drawable.sj_1,
R.drawable.sj_2,
R.drawable.sj_3,
R.drawable.sj_4,
R.drawable.sj_5,
R.drawable.sj_6,
R.drawable.sj_7,
R.drawable.nexus
};
}