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本文實例為大家分享了Android GridView實現橫向列表水平滾動的具體代碼，供大家參考，具體內容如下
有時候根據項目需要，使用可橫向滑動的GridView。僅以該文記錄一下，畢竟沒什么技術含量。
1.主界面布局代碼：activity_main.xml。設置android:numColumns=”auto_fit”是因為可以不定項的添加子項。
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical">
<HorizontalScrollView
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="fill_parent">
<view.gridviewdemo.AblGridView
android:id="@+id/id_gridview_home"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center"
android:numColumns="auto_fit"
android:scrollbars="none"
android:stretchMode="spacingWidthUniform"/>
</LinearLayout>
</HorizontalScrollView>
</LinearLayout>
2.主界面GridView列表子項布局文件：home_gridview_item.xml
<?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="wrap_content" android:layout_gravity="center" android:layout_margin="0dp" android:background="#ffffff" android:orientation="vertical"> <ImageView android:id="@+id/id_iv_item" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_horizontal" android:layout_marginTop="10dp" android:gravity="center" /> <TextView android:id="@+id/id_tv_item" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center_horizontal" android:layout_marginTop="5dp" android:gravity="center" android:paddingBottom="10dp" android:text="標題文字" android:textSize="12sp" /> </LinearLayout>
3.java實現代碼：MainActivity.java
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.widget.GridView;
import android.widget.LinearLayout;
public class MainActivity extends AppCompatActivity {
AblGridView id_gridview_home;
private int[] imgs = {R.mipmap.index1_nav_xc, R.mipmap.index1_nav_xc,
R.mipmap.index1_nav_xc, R.mipmap.index1_nav_xc, R.mipmap.index1_nav_xc};
private String[] titles = new String[]{"子項1", "子項2","子項3","子項4", "子項5"};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
id_gridview_home= (AblGridView) findViewById(R.id.id_gridview_home);
setGridView();
}
/**設置GirdView參數，綁定數據*/
private void setGridView() {
int size = imgs.length;
int length = 100;
DisplayMetrics dm = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(dm);
float density = dm.density;
int gridviewWidth = (int) (size * (length + 4) * density);
int itemWidth = (int) (length * density);
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
gridviewWidth, LinearLayout.LayoutParams.FILL_PARENT);
id_gridview_home.setLayoutParams(params); // 設置GirdView布局參數,橫向布局的關鍵
id_gridview_home.setColumnWidth(itemWidth); // 設置列表項寬
id_gridview_home.setHorizontalSpacing(5); // 設置列表項水平間距
id_gridview_home.setStretchMode(GridView.NO_STRETCH);
id_gridview_home.setNumColumns(size); // 設置列數量=列表集合數
AblGridViewBaseAdapter adapter = new AblGridViewBaseAdapter(this,imgs,titles);
id_gridview_home.setAdapter(adapter);
}
}
4.自定義控件：AblGridView
import android.content.Context;
import android.util.AttributeSet;
import android.widget.GridView;
/**
* 繼承GridView控件，為了更友好的顯示
* 解決在scrollview中只顯示第一行數據的問題
*/
public class AblGridView extends GridView {
public AblGridView(Context context, AttributeSet attrs) {
super(context, attrs);
}
public AblGridView(Context context) {
super(context);
}
public AblGridView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
}
@Override
public void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2,
MeasureSpec.AT_MOST);
super.onMeasure(widthMeasureSpec, expandSpec);
}
}
5.重寫適配器：AblGridViewBaseAdapter
import android.content.Context;
import android.util.SparseArray;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;
/**
* 重寫適配器
*/
public class AblGridViewBaseAdapter extends BaseAdapter {
private Context mContext;
private String[] Title;//顯示標題數組
private int[] Imgs;//顯示圖標數組
public AblGridViewBaseAdapter(Context mContext,int[] imgs ,String[] titles) {
super();
this.mContext = mContext;
Title = titles;
Imgs = imgs;
}
@Override
public int getCount() {
return Title.length;
}
@Override
public Object getItem(int position) {
return position;
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
convertView = loadHomeHyOrYs(position, convertView, parent);
return convertView;
}
/**
* 加載會員或醫生的功能列表
*/
public View loadHomeHyOrYs(int position, View convertView, ViewGroup parent) {
if (convertView == null) {
convertView = LayoutInflater.from(mContext).inflate(
R.layout.home_gridview_item, parent, false);
}
TextView tv = get(convertView, R.id.id_tv_item);
ImageView iv = get(convertView, R.id.id_iv_item);
iv.setBackgroundResource(Imgs[position]);
tv.setText(Title[position]);
return convertView;
}
public <T extends View> T get(View view, int id) {
SparseArray<View> viewHolder = (SparseArray<View>) view.getTag();
if (viewHolder == null) {
viewHolder = new SparseArray<View>();
view.setTag(viewHolder);
}
View childView = viewHolder.get(id);
if (childView == null) {
childView = view.findViewById(id);
viewHolder.put(id, childView);
}
return (T) childView;
}
}
以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持億速云。
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