如何根据大小在表格行中显示图像 [英] How to show image in table row based on size
问题描述
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，意思是-如果图像适合 1 个单元格意味着 1 个单元格，否则根据大小表示 2 个单元格或 4 个单元格(我知道它将占用多少个单元格)
Have 2x2 grid(Dynamic using TableLayout) need to show image on that. now based on image size, means-- if image fit for 1 cell means 1 cell,else big means 2 cells or 4 cells based on size( I know how many cells it will occupy)
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(第一列)如何在 2 个单元格中显示图像(不干扰网格)
i can show image in 1 cell, but problem is if image need 2 cells(1st column) how can show image in 2cell(With out disturbing the grid)
推荐答案
在不干扰网格的情况下，我看到的解决方法是动态设置 TableLayout 的图像顶部.然后你可以存档:
Without disturbing the grid, the workaround I see is to dynamically set image on top of your TableLayout.
Then you can archive this:
我已经上传了测试项目的代码这里;
I've uploaded the code of the test project here;
您初始化 overlappingImage 并且一旦您需要将图像设置到您的单元格 - 您只需将其添加到布局并根据您要填充的单元格数量设置高度和宽度参数.
You initialize overlappingImage and once you need to set image to your cell - you just add it to the layout and setting height and width params based on number of cells you want to fill.
TableLayout 动态生成，单元格的布局xml:
TableLayout generates dynamically, the cell's layout 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>
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>
以及处理按钮点击的活动代码 &生成表:
And the Activity code to handle button clicks & generates table:
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);
}
}
希望对您有所帮助.
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