package com.example.wang.myapplication;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
import java.util.ArrayList;
import java.util.List;
public class Main2Activity
extends AppCompatActivity {
GridView gv_1;
List<MyClass>
lm;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
gv_1=
(GridView)findViewById(R.id.gv_1);
lm=
new ArrayList<MyClass>
();
MyClass myClass=
new MyClass(R.drawable.f1,"名称1"
);
lm.add(myClass);
lm.add(new MyClass(R.drawable.f2,"名称2"
));
lm.add(new MyClass(R.drawable.f3,"名称3"
));
lm.add(new MyClass(R.drawable.f4,"名称4"
));
lm.add(new MyClass(R.drawable.f5,"名称5"
));
lm.add(new MyClass(R.drawable.f6,"名称6"
));
lm.add(new MyClass(R.drawable.f7,"名称7"
));
lm.add(new MyClass(R.drawable.f8,"名称8"
));
lm.add(new MyClass(R.drawable.f9,"名称9"
));
lm.add(new MyClass(R.drawable.f10,"名称10"
));
lm.add(new MyClass(R.drawable.f10,"名称1111"
));
lm.add(new MyClass(R.drawable.f10,"名称11"
));
GridAdapter gridAdapter=
new GridAdapter();
gv_1.setAdapter(gridAdapter);
}
class GridAdapter
extends BaseAdapter
{
@Override
public int getCount() {
return lm.size();
}
@Override
public Object getItem(
int position) {
return lm.get(position);
}
@Override
public long getItemId(
int position) {
return 0
;
}
@Override
public View getView(
int position, View convertView, ViewGroup parent) {
MyClass myClass=
lm.get(position);
if (convertView==
null)
{
Log.e("TAG", "适配器 getView=" +
position);
convertView=View.inflate(Main2Activity.
this,R.layout.activity_main21,
null);
}
ImageView imageView=
(ImageView)convertView.findViewById(R.id.iv_1);
imageView.setImageResource(myClass.getImg());
TextView textView=
(TextView)convertView.findViewById(R.id.tv_1);
if (myClass.getName().length()>=5||myClass.getName().trim().length()==0
)
{
Toast.makeText(Main2Activity.this, myClass.getName()+"不符合命名规则，请重新命名"
, Toast.LENGTH_LONG).show();
textView.setText(""
);
}
else
{
textView.setText(myClass.getName());
}
return convertView;
}
}
class MyClass
{
private int img;
private String name;
public int getImg() {
return img;
}
public void setImg(
int img) {
this.img =
img;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name =
name;
}
public MyClass(
int img,String name)
{
this.img=
img;
this.name=
name;
}
}
}
java
<?xml version="1.0" encoding="utf-8"?>
<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:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.wang.myapplication.Main2Activity">
<GridView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/gv_1"
android:numColumns="4"
android:gravity="center"
android:horizontalSpacing="20dp">
</GridView>
</RelativeLayout>
activity_main2
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:layout_width="70dp"
android:layout_height="70dp"
android:id="@+id/iv_1"/>
<TextView
android:layout_width="70dp"
android:layout_height="wrap_content"
android:gravity="center"
android:id="@+id/tv_1"/>
</LinearLayout>
activity_main21
转载于:https://www.cnblogs.com/wangchuanqi/p/5513613.html
