Grid View 自定义布局

Grid View 自定义布局

1.   选择 Grid View 的布局位置
2.   自定义Adapter
3.   设置数据




public class MainActivity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        GridView gv = (GridView) findViewById(R.id.gv);
        gv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                TextView tv = (TextView) view.findViewById(R.id.grid_textview);
                String s = tv.getText().toString();
                Toast.makeText(MainActivity.this, s, Toast.LENGTH_SHORT).show();
            }
        });
        imgAdapter imgadapter = new imgAdapter();
        gv.setAdapter(imgadapter);
    }

    class imgAdapter extends BaseAdapter {
        public int getCount() {
            return mThumbIds.length;
        }

        public Object getItem(int position) {
            return null;
        }

        public long getItemId(int position) {
            return 0;
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            View v = LayoutInflater.from(getApplication()).inflate(R.layout.gridview, null);
            ImageView iv = (ImageView) v.findViewById(R.id.grid_img);
            TextView tv = (TextView) v.findViewById(R.id.grid_textview);
            iv.setImageResource(mThumbIds[position]);
            tv.setText(getString(mThumbIds[position]));
            return v;
        }

        private Integer[] mThumbIds = {
                R.drawable.sample_2, R.drawable.sample_3,
                R.drawable.sample_4, R.drawable.sample_5,
                R.drawable.sample_6, R.drawable.sample_7,
                R.drawable.sample_0, R.drawable.sample_1,
                R.drawable.sample_2, R.drawable.sample_3,
                R.drawable.sample_4, R.drawable.sample_5,
                R.drawable.sample_6, R.drawable.sample_7,
                R.drawable.sample_0, R.drawable.sample_1,
                R.drawable.sample_2, R.drawable.sample_3,
                R.drawable.sample_4, R.drawable.sample_5,
                R.drawable.sample_6, R.drawable.sample_7
        };
    }
}


Activity 布局
<?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:id="@+id/activity_main"
    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.e560.m1026gridview.MainActivity">

    <GridView
        android:id="@+id/gv"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:columnWidth="90dp"
        android:numColumns="auto_fit"
        android:verticalSpacing="10dp"
        android:horizontalSpacing="10dp"
        android:stretchMode="columnWidth"
        android:gravity="center"
        />
</RelativeLayout>


自定义布局
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

        <ImageView
            android:id="@+id/grid_img"
            android:layout_width="400dp"
            android:layout_height="140dp"
            android:background="#CCCCCC" />

        <TextView
            android:id="@+id/grid_textview"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:textColor="#FFCCCC"
            android:textSize="20dp" />

</RelativeLayout>