Tablerow高度没变？

Question

例如,我以编程方式创建了4个表格,我希望每个表格高度为屏幕的1/4大小.每个桌子高度是屏幕尺寸的一半.我尝试了不同的方法,但是桌子高度并没有改变.我管理更改tablerow宽度,但高度没有.这是我的代码:

@SuppressLint("NewApi")
public class GameActivity extends Activity {

    private Context context;

    public void drawTable(){
        int i;
        TableLayout table = new TableLayout(context);

        table.setLayoutParams(new TableLayout.LayoutParams(TableLayout.LayoutParams.MATCH_PARENT, TableLayout.LayoutParams.MATCH_PARENT));
        //table.setStretchAllColumns(true);
        //table.setShrinkAllColumns(true);
        //table.setWeightSum(1.0F);
        TableRow[] rows = new TableRow[5];
        for(i = 0; i < 4; ++i){
            rows[i] = new TableRow(context);
            rows[i].setBackgroundResource(R.drawable.images214);
            rows[i].setWeightSum((float)1.0);
            rows[i].setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT, 10));
            //rows[i].setScaleY(0.25F);
            table.addView(rows[i]);
        }

        LinearLayout l = (LinearLayout) findViewById(R.id.linear);
        l.addView(table);
    }
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_game);

        context = this;
//        TableLayout table = new TableLayout(this);
//        TableRow row1 = new TableRow(this);
//        TableRow row2 = new TableRow(this);
//        row1.addView(new EditText(this));
//        row2.addView(new Button(this));
//        table.addView(row1);
//        table.addView(row2);
//        //table.setBackground(getResources().getDrawable(R.drawable.ic_launcher));
//        table.setBackgroundResource(R.drawable.ic_launcher);
//        LinearLayout l = (LinearLayout) findViewById(R.id.linear);
//        l.addView(table);
        drawTable();

    }

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

XML:

    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

  <ScrollView
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:scrollbars="none"
    android:layout_weight="1">
        <LinearLayout 
         android:id="@+id/linear" 
         android:layout_width="match_parent"
         android:layout_height="match_parent"  
         android:scrollbars="vertical|horizontal">
        </LinearLayout>
 </ScrollView>
</RelativeLayout>

Answer 1

你没有使用正确的LayoutParams,对于表 TableLayout,你应该设置LinearLayout.LayoutParams(如添加表到LinearLayout),并为您TableRows的LayoutParams应该是TableLayout.LayoutParams(因为他们的孩子TableLayout).即使进行了上述更改,事情也无法奏效,因为它TableLayout是一个对其子项施加约束的小部件,最值得注意的是高度将自动设置为WRAP_CONTENTfor TableRows.改变这种情况的唯一方法是使用weight这样的:

TableLayout table = new TableLayout(context);
table.setLayoutParams(new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.MATCH_PARENT));
table.setWeightSum(1.0f);
TableRow[] rows = new TableRow[4];
for(int i = 0; i < 4; ++i){
    rows[i] = new TableRow(context);
    rows[i].setBackgroundResource(R.drawable.images214);
    rows[i].setLayoutParams(new TableLayout.LayoutParams(TableLayout.LayoutParams.MATCH_PARENT, 0, 0.25f));        
    table.addView(rows[i]);
}

LinearLayout l = (LinearLayout) findViewById(R.id.linear);
l.addView(table);

但这不起作用,因为你TableLayout的设置是填充父级,父级是一个ScrollView不对其子级施加维度的父级.我不知道你在ScrollView那里尝试做什么(尤其是你希望桌子填满整个屏幕)所以我不知道该推荐你什么.此外,我不知道你的完整布局,但你的嵌套到很多布局.