目标:使图像垂直和水平显示阵列
任务是让它无限地向右和向左移动,它已经可以上下工作,但是当我想向右走时却没有。无论图像的大小如何,无论图像的数量和列数如何,它都需要。
我尝试过这些方法,但没有一个给我想要的结果:
https://stackoverflow.com/a/6716638/8889248
活动_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
tools:context=".MainActivity">
<GridView
android:id="@+id/gv"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:gravity="center"
android:horizontalSpacing="20dp"
android:columnWidth="200dp"
android:numColumns="4"
android:verticalSpacing="20dp"
android:stretchMode="columnWidth"
android:scrollbarAlwaysDrawHorizontalTrack="true"
android:scrollbarAlwaysDrawVerticalTrack="true"
android:scrollbars="horizontal"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
>
</GridView>
</LinearLayout>
grid_single.xml
<?xml version="1.0" encoding="utf-8"?>
<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:padding="5dp"
android:orientation="vertical">
<ImageView
android:id="@+id/grid_image"
android:layout_width="70dp"
android:layout_height="70dp" ></ImageView>
</LinearLayout>
主活动.java
package com.example.gridview;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.app.Activity;
import android.view.View;
import android.widget.AdapterView;
import android.widget.GridView;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
GridView grid;
int[] imageId = {
R.drawable.dog,
R.drawable.elephant,
R.drawable.tiger,
R.drawable.fish,
R.drawable.wolf,
R.drawable.lion,
R.drawable.horse,
R.drawable.house,
R.drawable.monkey,
R.drawable.restaurant,
R.drawable.fox,
R.drawable.shark,
R.drawable.nerd,
R.drawable.confused,
R.drawable.laughing
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
CustomGrid adapter = new CustomGrid(MainActivity.this, imageId);
grid=(GridView)findViewById(R.id.gv);
grid.setAdapter(adapter);
grid.setOnItemClickListener(new AdapterView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
Toast.makeText(MainActivity.this, "You Clicked at " , Toast.LENGTH_SHORT).show();
}
});
}
}
自定义网格.java
package com.example.gridview;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;
public class CustomGrid extends BaseAdapter{
private Context mContext;
private final int[] Imageid;
public CustomGrid(Context c, int[] Imageid ) {
mContext = c;
this.Imageid = Imageid;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return Imageid.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.grid_single, null);
ImageView imageView = (ImageView)grid.findViewById(R.id.grid_image);
imageView.setImageResource(Imageid[position]);
} else {
grid = (View) convertView;
}
return grid;
}
}
我想我已经弄清楚你到底想做什么了。
我研究并找到了如何使用此链接进行操作:https : //stackoverflow.com/a/36128774/15392527
将您的 activity_main.xml 更改为:
活动_main.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
tools:context=".MainActivity">
<HorizontalScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="900dp"
android:layout_height="match_parent"
android:orientation="horizontal">
<GridView
android:id="@+id/gv"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:columnWidth="200dp"
android:gravity="center"
android:horizontalSpacing="20dp"
android:numColumns="4"
android:scrollbarAlwaysDrawHorizontalTrack="true"
android:scrollbarAlwaysDrawVerticalTrack="true"
android:scrollbars="horizontal"
android:stretchMode="columnWidth"
android:verticalSpacing="20dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent">
</GridView>
</LinearLayout>
</FrameLayout>
</HorizontalScrollView>
</androidx.constraintlayout.widget.ConstraintLayout>
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