我正在尝试使用单元格填充tablelayout,并且行拉伸以填充整个屏幕。像这样:
http://imageshack.us/photo/my-images/69/device20120201005942.png/
在Eclipse的Graphical Layout窗口中设计的这个布局给出了我想要的东西(android:layout_weight解决了垂直拉伸):
<?xml version="1.0" encoding="utf-8"?>
<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_gravity="center"
android:stretchColumns="*" >
<TableRow
android:id="@+id/tableRow1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center" android:layout_weight="1">
<ImageView
android:id="@+id/imageView1"
android:layout_gravity="center"
android:src="@drawable/add" />
<ImageView
android:id="@+id/imageView2"
android:layout_gravity="center"
android:src="@drawable/bound" />
<ImageView
android:id="@+id/imageView3"
android:layout_gravity="center"
android:src="@drawable/cod" />
</TableRow>
<TableRow
android:id="@+id/tableRow2"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:layout_weight="1" >
<ImageView
android:id="@+id/imageView4"
android:layout_gravity="center"
android:src="@drawable/delete" />
<ImageView
android:id="@+id/imageView5"
android:layout_gravity="center"
android:src="@drawable/delete2" />
<ImageView
android:id="@+id/imageView6"
android:layout_gravity="center"
android:src="@drawable/floppy" />
</TableRow>
</TableLayout>
我试图在代码中创建相同的外观但到目前为止失败了。这是我的活动的创建:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.tablelo);
TableLayout tl = (TableLayout) findViewById(R.id.table);
Log.d(TAG, "Width :" + tl.getWidth());
for (int row = 0; row < 3; row++) {
TableRow tr = new TableRow(this);
tr.setId(100 + row);
for (int cell = 0; cell < 3; cell++) {
ImageView image = new ImageView(this);
image.setImageResource(imageIDs[row * 3 + cell]);
tr.addView(image);
}
tr.setGravity(Gravity.CENTER);
LayoutParams params = new TableRow.LayoutParams(
LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT, 1);
tr.setLayoutParams(params);
tl.addView(tr, params);
}
tl.setStretchAllColumns(true);
}
我错过了设置ImageView重力的代码,但这种尝试会导致崩溃:
image.setLayoutParams(new FrameLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, Gravity.CENTER));
此代码会生成3行,每行都水平拉伸但不垂直拉伸:
http://imageshack.us/photo/my-images/835/gridc.png/
我找不到我在这里缺少的东西。我还尝试在设计器中准备一个tablerow并在运行时添加并添加到表中,但结果没有改变。
所以,不知何故,我希望以编程方式获得与编辑器相同的布局。
请帮助!
答案 0 :(得分:5)
我花了一个半小时试图弄清楚发生了什么。然后我发现它:)这是我的TableActivity的完整列表,请注意表行和图像的不同LayoutParams的使用:
import android.app.Activity;
import android.os.Bundle;
import android.util.Log;
import android.view.Gravity;
import android.widget.*;
import android.widget.TableLayout;
import android.widget.TableRow;
public class TableActivity extends Activity {
private static final String TAG="TableActivity";
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.table_activity);
TableLayout tl = (TableLayout) findViewById(R.id.table);
Log.d(TAG, "Width :" + tl.getWidth());
for (int row = 0; row < 3; row++) {
TableRow tr = new TableRow(this);
tr.setId(100 + row);
//Note that you must use TableLayout.LayoutParams,
//since the parent of this TableRow is a TableLayout
TableLayout.LayoutParams params = new TableLayout.LayoutParams(
TableLayout.LayoutParams.WRAP_CONTENT, TableLayout.LayoutParams.WRAP_CONTENT, 1f);
for (int cell = 0; cell < 3; cell++) {
ImageView image = new ImageView(this);
image.setImageResource(android.R.drawable.btn_plus);
//Note that here you must use TableRow.LayoutParams
//since TableRow is the parent of this ImageView
TableRow.LayoutParams imageParams = new TableRow.LayoutParams();
//And this is how you set the gravity:
imageParams.gravity = Gravity.CENTER;
image.setLayoutParams(imageParams);
tr.addView(image);
}
tr.setLayoutParams(params);
tl.addView(tr, params);
}
tl.setStretchAllColumns(true);
}
}
table_activity.xml只是一个空表格布局:
<?xml version="1.0" encoding="utf-8"?>
<TableLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/table"
android:layout_width="match_parent"
android:layout_height="match_parent">
</TableLayout>
所以简而言之,最简单的解决方案是使用在xml文件中定义的布局:)但是如果你必须使用JAVA,你必须小心你正在使用的LayoutParams之王,你应该总是使用一个观点的父母。