如何根据大小在表格行中显示图像

Question

有2x2网格(动态使用TableLayout)需要在其上显示图像.现在基于图像大小,意味着 - 如果图像适合1个细胞意味着1个细胞,那么大意味着2个细胞或4个细胞基于大小(我知道它将占用多少个细胞)

我可以在1个单元格中显示图像,但问题是如果图像需要2个单元格(第1列)如何在2个单元格中显示图像(没有干扰网格)

Answer 1

在不干扰电网,我看到的解决方法是动态地设置图像在上面你的TableLayout.然后你可以存档这个:

我上传的测试项目的代码在这里 ;

初始化overlappingImage,一旦需要将图像设置到单元格 - 您只需将其添加到布局中,并根据要填充的单元格数设置高度和宽度参数.

TableLayout 动态生成,单元格的布局xml:

<?xml version="1.0" encoding="utf-8"?>
<FrameLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_height="wrap_content"
    android:layout_width="wrap_content">
    <View
            android:layout_margin="4dp"
            android:background="#aacc00"
            android:layout_height="40dp"
            android:layout_width="40dp"/>
</FrameLayout>

该Activity的布局:

<?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"
    android:id="@+id/container"
    android:padding="16dp"
    android:orientation="vertical"
    app:layout_behavior="@string/appbar_scrolling_view_behavior">

    <TableLayout
        android:id="@+id/tableLayout"
        android:layout_width="match_parent"
        android:layout_height="280dp"/>

    <LinearLayout
        android:id="@+id/buttonsLinearLayout"
        android:layout_below="@+id/tableLayout"
        android:layout_marginTop="16dp"
        android:orientation="horizontal"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <Button
            android:text="1x1"
            android:id="@+id/button11"
            android:onClick="onClick11"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />
        <Button
            android:text="4x1"
            android:id="@+id/button21"
            android:onClick="onClick41"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />
        <Button
            android:text="2x3 at (2;2)"
            android:id="@+id/button12"
            android:onClick="onClick32"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />
        <Button
            android:text="2x2"
            android:id="@+id/button22"
            android:onClick="onClick22"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />
    </LinearLayout>
</RelativeLayout>

以及处理按钮点击和生成表的活动代码:

public class MainActivity extends AppCompatActivity {

    RelativeLayout container;
    int cellWidth = 0, cellHeight = 0;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

        TableLayout tableLayout = (TableLayout) findViewById(R.id.tableLayout);
        tableLayout.setStretchAllColumns(true);
        for (int i = 0; i < 4; i++) {
            TableRow tableRow = new TableRow(this);
            for (int j = 0; j < 10; j++) {
                LayoutInflater layoutInflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
                View cell = layoutInflater.inflate(R.layout.table_cell, null, false);
                if (cellHeight == 0 ) {
                    cell.measure(View.MeasureSpec.UNSPECIFIED, View.MeasureSpec.UNSPECIFIED);
                    cellWidth = cell.getMeasuredWidth();
                    cellHeight = cell.getMeasuredHeight();
                }

                tableRow.addView(cell);
            }

            tableLayout.addView(tableRow);
        }

        container = (RelativeLayout)findViewById(R.id.container);
        overlappingImage = new ImageView(this);
        overlappingImage.setScaleType(ImageView.ScaleType.FIT_XY);
    }

    ImageView overlappingImage;

    private void restoreTableLayout() {
        container.removeView(overlappingImage);
    }

    public void onClick11(View view) {
        restoreTableLayout();
        RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(cellWidth, cellHeight);
        overlappingImage.setLayoutParams(params);
        overlappingImage.setImageResource(R.drawable.horizontal_cat);
        container.addView(overlappingImage);
    }

    public void onClick41(View view) {
        restoreTableLayout();
        RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(cellWidth*4, cellHeight);
        overlappingImage.setLayoutParams(params);
        overlappingImage.setImageResource(R.drawable.horizontal_cat);
        container.addView(overlappingImage);
    }

    public void onClick32(View view) {
        restoreTableLayout();
        RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(cellWidth*3, cellHeight*2);
        params.setMargins(cellWidth*2, cellHeight*2, 0 ,0);
        overlappingImage.setLayoutParams(params);
        overlappingImage.setImageResource(R.drawable.vertical_cat);
        container.addView(overlappingImage);
    }

    public void onClick22(View view) {
        restoreTableLayout();
        RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(cellWidth*2, cellHeight*2);
        overlappingImage.setLayoutParams(params);
        overlappingImage.setImageResource(R.drawable.horizontal_cat);
        container.addView(overlappingImage);
    }
}

我希望,这有帮助.