我要显示的3x3大小的GridView控件。我想设置根据设备尺寸的高度和宽度。我正在从此链接。

I want to show 3x3 sized gridview. I want to set the height and width based on device size. I am taking reference from this link.

MainActivity -

MainActivity-

public class MainActivity extends Activity {

   @Override
   protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);

      GridView gridview = (GridView) findViewById(R.id.gridview);
      gridview.setAdapter(new ImageAdapter(this));
   }

   @Override
   public boolean onCreateOptionsMenu(Menu menu) {
      getMenuInflater().inflate(R.menu.main, menu);
      return true;
   }

}

activity_main -

activity_main-

<?xml version="1.0" encoding="utf-8"?>
<GridView xmlns:android="http://schemas.android.com/apk/res/android" 
   android:id="@+id/gridview"
   android:layout_width="fill_parent" 
   android:layout_height="fill_parent"
   android:columnWidth="90dp"
   android:numColumns="auto_fit"
   android:verticalSpacing="10dp"
   android:horizontalSpacing="10dp"
   android:stretchMode="columnWidth"
   android:gravity="center"
/>

修改 -

第一次一样让屏幕的高度和宽度然后将每个项目的高度和屏幕的高度和宽度，我得到的价值宽度的1/3。

推荐答案

不要使用屏幕尺寸，在多窗口的上下文，这种方法是无效。 如果您的网格是一个3×3项目大小固定，所以使用自定义布局的ViewGroup是这样的：（和设置 RelativeLayout的项内容）

Do not use screen size, in a multi-windows context this method is invalid. If your grid is a 3x3 items size fixed, so use custom layout ViewGroup like this: (and set RelativeLayout items content)

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle state) {
        setContentView(new ViewGroup(this) {
            private RelativeLayout[] items = new RelativeLayout[9];
            private int width, height, itemWidth, itemHeight;
            {
                Random r = new Random();
                for (int i = 0; i < 9; i++) {
                    items[i] = new RelativeLayout(getContext());
                    float[] hsv = new float[] {360 * r.nextFloat(), .50f, .75f};
                    items[i].setBackgroundColor(Color.HSVToColor(hsv));
                    addView(items[i]);

                    // UPDATE ////////////////////////////////////
                    ImageView image = new ImageView(getContext());
                    switch (i) {
                    case 0: // top left
                    case 1: // top center
                    case 2: // top right
                    case 3: // center left
                    case 4: // center center
                    case 5: // center right
                    case 6: // bottom left
                    case 7: // bottom center
                    case 8: // bottom right
                        image.setImageResource(R.drawable.ic_launcher);
                        break;
                    }
                    image.setScaleType(ScaleType.FIT_XY);
                    image.setLayoutParams(new RelativeLayout.LayoutParams(
                            RelativeLayout.LayoutParams.MATCH_PARENT,
                            RelativeLayout.LayoutParams.MATCH_PARENT
                    ));
                    items[i].addView(image);
                    //////////////////////////////////////////////
                }
            }
            @Override
            protected void onMeasure(int wMS, int hMS) {
                width = MeasureSpec.getSize(wMS);
                height = MeasureSpec.getSize(hMS);
                itemWidth = width / 3;
                itemHeight = height / 3;
                wMS = MeasureSpec.makeMeasureSpec(itemWidth, MeasureSpec.EXACTLY);
                hMS = MeasureSpec.makeMeasureSpec(itemHeight, MeasureSpec.EXACTLY);
                measureChildren(wMS, hMS);
                setMeasuredDimension(width, height);
            }
            @Override
            protected void onLayout(boolean changed, int l, int t, int r, int b) {
                for (int i = 0; i < 9; i++) {
                    l = itemWidth * (i % 3);
                    t = itemHeight * (i / 3);
                    r = l + itemWidth;
                    b = t + itemHeight;
                    items[i].layout(l, t, r, b);
                }
            }
        });
        super.onCreate(state);
    }

}

修改：我看到在code更新，你只需到你的图像添加到项目的容器。通过这种方法，不需要XML布局文件，因为你管理的内容和大小自己。

EDIT : see my update in code, you have simply to add your images to the items containers. With this method, no XML layout file needed because you manage content and size yourself.

结果：

Result :

修改：极简的方式：

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle state) {
        setContentView(new ViewGroup(this) {
            private static final int SIZE_X = 3;
            private static final int SIZE_Y = 3;
            private ImageView[] items = new ImageView[SIZE_X * SIZE_Y];
            private int itemWidth, itemHeight;
            {
                setBackgroundColor(Color.DKGRAY);
                for (int i = 0; i < items.length; i++) {
                    items[i] = new ImageView(getContext());
                    items[i].setScaleType(ScaleType.CENTER);
                    items[i].setImageResource(R.drawable.ic_launcher);
                    addView(items[i]);
                }
            }
            @Override
            protected void onMeasure(int wMS, int hMS) {
                int width = MeasureSpec.getSize(wMS);
                int height = MeasureSpec.getSize(hMS);
                itemWidth = width / SIZE_X;
                itemHeight = height / SIZE_Y;
                wMS = MeasureSpec.makeMeasureSpec(itemWidth, MeasureSpec.EXACTLY);
                hMS = MeasureSpec.makeMeasureSpec(itemHeight, MeasureSpec.EXACTLY);
                measureChildren(wMS, hMS);
                setMeasuredDimension(width, height);
            }
            @Override
            protected void onLayout(boolean changed, int l, int t, int r, int b) {
                for (int i = 0; i < items.length; i++) {
                    l = itemWidth * (i % SIZE_X);
                    t = itemHeight * (i / SIZE_X);
                    r = l + itemWidth;
                    b = t + itemHeight;
                    items[i].layout(l, t, r, b);
                }
            }
        });
        super.onCreate(state);
    }

}

结果

@ Kanwaljit辛格：

@ Kanwaljit Singh:

在MainActivity项目创建循环：

In MainActivity items creation loop:

final int id = i;
items[i].setOnClickListener(new OnClickListener() {
    @Override
    public void onClick(View v) {
        startActivity(new Intent(getContext(), NextActivity.class).putExtra("id", id));
    }
});

在NextActivity：

In NextActivity:

int id = getIntent().getIntExtra("id", -1);