在android中动态使用卡片视图
我正在android studio中创建一个页面,在这里我需要使用卡片的概念,其中卡片包含一个人的图像和图像下方的人名,并且卡片必须显示在网格中,例如android marshmallow的联系人列表,其中每个联系人在网格视图中显示为一个平铺 我尝试了不同的可能的方法,但无法纠正这一点,请帮助我在这方面。在android中动态使用卡片视图,android,xml,android-studio,android-cardview,Android,Xml,Android Studio,Android Cardview,我正在android studio中创建一个页面,在这里我需要使用卡片的概念,其中卡片包含一个人的图像和图像下方的人名,并且卡片必须显示在网格中,例如android marshmallow的联系人列表,其中每个联系人在网格视图中显示为一个平铺 我尝试了不同的可能的方法,但无法纠正这一点,请帮助我在这方面。 这就是我如何生成一张卡片的方式,但我需要另外四张平铺形状的卡片,这些卡片应该根据人数自动生成 谢谢。使用RecyclerView和GridLayoutManager() 像这样: Rec
这就是我如何生成一张卡片的方式,但我需要另外四张平铺形状的卡片,这些卡片应该根据人数自动生成
谢谢。使用
RecyclerView
和GridLayoutManager
()
像这样:
RecyclerView recyclerView = findViewById(R.id.my_recyclerview);
GridLayoutManager layoutManager = new GridLayoutManager(context, 2);
recyclerView.setLayoutManager(layoutManager);
然后制作您自己的类MyAdapter
,该类扩展RecyclerView.Adapter
,并将您的cardwiew.xml
布局充气,并将其设置为RecyclerView
:
MyAdapter adapter = new MyAdapter(dataset);
recyclerView.setAdapter(adapter);
有关如何执行此操作的详细说明,请参见您可以使用轻松完成此操作。 您需要一个自定义适配器类,用于填充
cardview
这是适配器类的示例代码
public class CustomGrid extends BaseAdapter{
private Context mContext;
private final String[] web;
private final int[] Imageid;
public CustomGrid(Context c,String[] web,int[] Imageid ) {
mContext = c;
this.Imageid = Imageid;
this.web = web;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return web.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);
TextView textView = (TextView) grid.findViewById(R.id.grid_text);
ImageView imageView = (ImageView)grid.findViewById(R.id.grid_image);
textView.setText(web[position]);
imageView.setImageResource(Imageid[position]);
} else {
grid = (View) convertView;
}
return grid;
}
}
从活动中调用此适配器类,如下所示
公共类MainActivity扩展活动{
网格视图网格;
字符串[]名称={
“谷歌”,
“Github”,
“Instagram”,
“Facebook”
};
int[]图像ID={
R.drawable.image1,
R.drawable.image2,
R.drawable.image3,
R.drawable.image4
};
@覆盖
创建时受保护的void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
CustomGrid adapter=新的CustomGrid(MainActivity.this、name、imageId);
grid=(GridView)findviewbyd(R.id.grid);
设置适配器(适配器);
grid.setOnItemClickListener(新的AdapterView.OnItemClickListener(){
@覆盖
public void onItemClick(AdapterView父级、视图、,
内部位置,长id){
Toast.makeText(MainActivity.this),您在“+name[+position],Toast.LENGTH_SHORT.show]处单击过它();
}
});
}
}
遵循本教程,您可以使用RecyclerView和适配器使其变得非常简单,如果您需要,我可以编写一个开发的答案。是的,这将非常有用。非常感谢。
public class CustomGrid extends BaseAdapter{
private Context mContext;
private final String[] web;
private final int[] Imageid;
public CustomGrid(Context c,String[] web,int[] Imageid ) {
mContext = c;
this.Imageid = Imageid;
this.web = web;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return web.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);
TextView textView = (TextView) grid.findViewById(R.id.grid_text);
ImageView imageView = (ImageView)grid.findViewById(R.id.grid_image);
textView.setText(web[position]);
imageView.setImageResource(Imageid[position]);
} else {
grid = (View) convertView;
}
return grid;
}
}
public class MainActivity extends Activity {
GridView grid;
String[] name = {
"Google",
"Github",
"Instagram",
"Facebook"
};
int[] imageId = {
R.drawable.image1,
R.drawable.image2,
R.drawable.image3,
R.drawable.image4
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
CustomGrid adapter = new CustomGrid(MainActivity.this, name, imageId);
grid=(GridView)findViewById(R.id.grid);
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 " +name[+ position], Toast.LENGTH_SHORT).show();
}
});
}
}