Question

我试图在没有XML的情况下创建TableLayout，屏幕上没有任何内容。以下是我的代码。请让我知道这是什么错误？

代码：

    @Override
    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        setContentView(R.layout.act);
        TableLayout tlMain =(TableLayout)findViewById(R.id.tlMain);
        LayoutInflater inflater = getLayoutInflater();

        FrameLayout.LayoutParams lp = new FrameLayout.LayoutParams(
        ViewGroup.LayoutParams.FILL_PARENT,
        ViewGroup.LayoutParams.FILL_PARENT);
        tlMain.setLayoutParams(lp);


        tlMain.setStretchAllColumns(true);  
        tlMain.setShrinkAllColumns(true); 


        TableLayout.LayoutParams rowLp = new TableLayout.LayoutParams(
                ViewGroup.LayoutParams.WRAP_CONTENT,
                ViewGroup.LayoutParams.WRAP_CONTENT);
        rowLp.weight=1;

        TableRow.LayoutParams cellLp = new TableRow.LayoutParams(
                ViewGroup.LayoutParams.FILL_PARENT,
                ViewGroup.LayoutParams.WRAP_CONTENT);

        for(int i=0;i<4;i++)
        {   
            TableRow tableRow = new TableRow(this);

            for (int j = 0; j < 4; j++) {
                TextView number2 = new TextView(this);
                number2.setTextColor(color.black);               
                number2.setText(String.valueOf(i));                
                tableRow.addView(number2,cellLp);
                tableRow.setGravity(Gravity.CENTER_HORIZONTAL);               
            }
            tlMain.addView(tableRow,rowLp);              
        }
        setContentView(tlMain);    
    }

Answer 1

变化：

 FrameLayout.LayoutParams lp = new FrameLayout.LayoutParams(
        ViewGroup.LayoutParams.FILL_PARENT,
        ViewGroup.LayoutParams.FILL_PARENT);

到

 ViewGroup.LayoutParams lp = new ViewGroup.LayoutParams(
        ViewGroup.LayoutParams.FILL_PARENT,
        ViewGroup.LayoutParams.FILL_PARENT);

也不要打电话：

setContentView(tlMain);

假设您在R.layout.act

中有表格布局

尝试改变：

 TableLayout.LayoutParams rowLp = new TableLayout.LayoutParams(
                ViewGroup.LayoutParams.WRAP_CONTENT,
                ViewGroup.LayoutParams.WRAP_CONTENT);

为：

 TableLayout.LayoutParams rowLp = new TableLayout.LayoutParams(
                ViewGroup.LayoutParams.FILL_PARENT,
                ViewGroup.LayoutParams.WRAP_CONTENT);

我的猜测是你有一个宽度为Wrap_content的表行和一个宽度为fill_parent的Textview。

这是矛盾的陈述，而android无法绘制它。

Answer 2

如果您想在不使用TableLayout的情况下创建layout-xml，那么

试试这个

 TableLayout tlMain = new TableLayout(this);

而不是

setContentView(R.layout.act);
TableLayout tlMain =(TableLayout)findViewById(R.id.tlMain);

Answer 3

而不是使用

setContentView(tlMain);

使用

mainlayout.addView(tlMain);

其中mainlayout可以是线性或相对布局，也可以是包装表格的任何其他容器。

Answer 4

    This is How it started Working.

    @Override
protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);

 TableLayout table = new TableLayout(this);  
     table.setStretchAllColumns(true);
     table.setShrinkAllColumns(true);
     TableRow rowTitle = new TableRow(this);
     rowTitle.setGravity(Gravity.CENTER_HORIZONTAL);
     TableRow.LayoutParams trparams = new   TableRow.LayoutParams(android.widget.TableRow.LayoutParams.WRAP_CONTENT, android.widget.TableRow.LayoutParams.WRAP_CONTENT);
    rowTitle.setLayoutParams(trparams); 
    rowTitle.setGravity(Gravity.CENTER_HORIZONTAL); 
    TableRow rowDayLabels = new TableRow(this);
    TableRow rowAmounts = new TableRow(this);
    TextView empty = new TextView(this);
    empty.setText("Empty");
    TextView title = new TextView(this);
    title.setLayoutParams(trparams);
    table.setLayoutParams(trparams);
    title.setText("WikiCode");
    rowTitle.addView(title);
    rowTitle.addView(empty);
    table.addView(rowTitle);
    for(int i=0;i<4;i++)
    {   
        TableRow tableRow = new TableRow(this);
        tableRow.setLayoutParams(trparams);
        for (int j = 0; j < 4; j++) {
            TextView number2 = new TextView(this);
            number2.setLayoutParams(trparams);               
            number2.setText("check"+i);                
            tableRow.addView(number2);
            tableRow.setGravity(Gravity.CENTER_HORIZONTAL);               
        }
        table.addView(tableRow);              
    }


    setContentView(table);
}

没有XML的TableLayout，屏幕上没有任何内容

4 个答案: