在手机应用中看到好多带有分割线的GridView，但android的GridView并没有设置分割线的属性。网上找到的资料就是重写GridView。效果如下：
代码如下：
public class GridViewLine extends GridView { private static final String TAG = "GridViewLine"; private int mColor=Color.LTGRAY; public GridViewLine(Context context) { super(context); } public GridViewLine(Context context, AttributeSet attrs) { super(context, attrs); } public GridViewLine(Context context, AttributeSet attrs, int defStyleAttr) { super(context, attrs, defStyleAttr); } public void setLineColor(int color){ this.mColor=color; } int i=0; @Override protected void dispatchDraw(Canvas canvas) { super.dispatchDraw(canvas); //获取列数 int columns=getNumColumns(); //获取子类总数 int counts=getChildCount(); Paint paint=new Paint(); paint.setStyle(Paint.Style.STROKE); paint.setColor(mColor); int no_lin=counts%columns==0?columns:counts%columns; for (int i = 0; i <counts ; i++) { View view=getChildAt(i); //底线 if(i<(counts-no_lin)){ canvas.drawLine(view.getLeft(),view.getBottom(),view.getRight(),view.getBottom(),paint); } //右线 if((i+1)%columns!=0){ canvas.drawLine(view.getRight(),view.getTop(),view.getRight(),view.getBottom(),paint); } } } }Activity
public class MainActivity extends AppCompatActivity { private GridViewLine gridViewLine; private List<Integer> images; private List<Map<String,Integer>> maps; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); images=new ArrayList<>(); maps=new ArrayList<>(); InitData(); gridViewLine =(GridViewLine)findViewById(R.id.gridview); // gridViewLine.setLineColor(Color.RED); SimpleAdapter simpleAdapter=new SimpleAdapter(this,maps,R.layout.gridview_item,new String[]{"image"},new int[]{R.id.image}); gridViewLine.setAdapter(simpleAdapter); gridViewLine.setOnItemClickListener(new AdapterView.OnItemClickListener() { @Override public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) { Toast.makeText(MainActivity.this,"Click "+i,Toast.LENGTH_SHORT).show(); } }); } private void InitData() { images.addAll(Arrays.asList(R.drawable.ic_device_model_htc,R.drawable.ic_device_model_huawei,R.drawable.ic_device_model_iphone, R.drawable.ic_device_model_ktouch,R.drawable.ic_device_model_lg,R.drawable.ic_device_model_meizu)); for(int i=0;i<images.size();i++){ Map<String,Integer> map=new HashMap<>(); map.put("image", images.get(i)); maps.add(map); } }