Question

用代码写的布局，但是tablelayout不能占满整个屏幕，不想用绝对布局去设置坐标，求助解决方法~谢谢。

package sumakria.gumtree;

import java.util.ArrayList;
import java.util.Random;

import android.content.Context;
import android.graphics.Color;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.LinearLayout;
import android.widget.ScrollView;
import android.widget.TableLayout;
import android.widget.TableRow;
import android.widget.TextView;

public class list_frame extends ViewGroup implements Globle {

private LinearLayout linear2;
private TextView text_current;
private ScrollView scrollView;
private TableLayout tableLayout;
private TableRow tableRow_current;

private ArrayList<TableRow> trList = new ArrayList<TableRow>();
private ArrayList<TextView> tvList = new ArrayList<TextView>();

// constructor
public list_frame(Context context) {
super(context);

this.init(context);
}

// initialization.
public void init(Context context) {

LinearLayout.LayoutParams linear1para = new LinearLayout.LayoutParams(
LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);

linear2 = new LinearLayout(context);
linear2.setOrientation(LinearLayout.VERTICAL);
linear2.setLayoutParams(linear1para);

// scrollview configurations
scrollView = new ScrollView(context);
scrollView.setBackgroundColor(Color.YELLOW);

// tablelayout
tableLayout = new TableLayout(context);

TableLayout.LayoutParams tableLayoutParams = new TableLayout.LayoutParams(
480, LayoutParams.WRAP_CONTENT);
tableLayout.setLayoutParams(tableLayoutParams);
tableLayout.setStretchAllColumns(false);
tableLayout.setColumnStretchable(0, false);

// tablerows
LayoutParams tableRowParams = new LayoutParams(
LayoutParams.FILL_PARENT, LayoutParams.FILL_PARENT);
tableRow_current = new TableRow(context);
tableRow_current.setLayoutParams(tableRowParams);
//转下篇
// set 20 rows with different texts and background colors.
for (int i = 0; i < 40; i++) {
tableRow_current = new TableRow(context);
tableRow_current.setLayoutParams(tableRowParams);

text_current = new TextView(context);
text_current.setTextSize(24.0f);
text_current.setText(new Integer(i).toString()
+ "\tlarge context!!!!!");

// generate random colors
int color;
Random rnd = new Random();
color = Color.argb(255, rnd.nextInt(255), rnd.nextInt(255),
rnd.nextInt(255));
if (i % 2 == 0) {
color = Color.DKGRAY;
}
else {
color = Color.BLACK;
}

tableRow_current.setBackgroundColor(color);

tvList.add(text_current);
tableRow_current.addView(text_current);
trList.add(tableRow_current);

tableLayout.addView(trList.get(i));
}
this.addView(scrollView);
scrollView.addView(linear2);
linear2.addView(tableLayout);

}

Answer 1

不建议自己写布局，除非你很熟悉，否则不建议自己写，布局这个东西都是绝对布局过来的，任何布局都是自己按照自己要求计算出坐标位子，然后直接设置。
大多数时候也不需要自己写布局，需要你要List效果的布局，可以使用BoxLayout，GridLayout,甚至可以修改JList，但是不建议自己写，麻烦而且bug多。