我们如何能够增加在布局或使用帆布动态位置添加按钮，而不是在表格布局  任何人都可以请帮我在这。

How can we add add buttons at dynamic positions in layout or using canvas ,not in table layout Can anyone please help me on this.

推荐答案

使用RelativeLayout的定位你的控制，你喜欢他们。看看这个链接： 动态的TextView中相对布局

Use RelativeLayout to position your controls where you like them. Have a look at this link: Dynamic TextView in Relative layout

在这里 Programmatically创建一个RelativeLayout的Andr​​oid中

如果你想在短短的XML实现它。看这里： http://www.mkyong.com/android/android-relativelayout-example/

If you like to achieve it within XML only. Look here: http://www.mkyong.com/android/android-relativelayout-example/

下面的例子你如何能使用RelativeLayout的动态定位您的控件：

Here an example how you could use the RelativeLayout to position your controls dynamically:

public class MainActivity extends Activity {

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

        // Creating a new RelativeLayout
        RelativeLayout mainRelativeLayout = new RelativeLayout(this);

        // Defining the RelativeLayout layout parameters with Fill_Parent
        RelativeLayout.LayoutParams relativeLayoutParameters = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.FILL_PARENT, RelativeLayout.LayoutParams.FILL_PARENT);

        // Creating a new Left Button
        Button buttonLeft = new Button(this);
        buttonLeft.setText("Left");

        // Creating a new Left Button with Margin
        Button buttonLeftWithMargin = new Button(this);
        buttonLeftWithMargin.setText("Left with Margin");

        // Creating a new Center Button
        Button buttonCenterParent = new Button(this);
        buttonCenterParent.setText("Center");

        // Creating a new Bottom Button
        Button buttonBottom = new Button(this);
        buttonBottom.setText("Bottom");

        // Add a Layout to the Buttons
        AddButtonLayout(buttonLeft, RelativeLayout.ALIGN_PARENT_LEFT);
        AddButtonLayout(buttonCenterParent, RelativeLayout.CENTER_IN_PARENT);
        AddButtonLayout(buttonBottom, RelativeLayout.ALIGN_PARENT_BOTTOM);

        // Add a Layout to the Button with Margin
        AddButtonLayout(buttonLeftWithMargin, RelativeLayout.ALIGN_PARENT_LEFT, 30, 80, 0, 0);

        // Add the Buttons to the View
        mainRelativeLayout.addView(buttonLeft);
        mainRelativeLayout.addView(buttonCenterParent);
        mainRelativeLayout.addView(buttonBottom);
        mainRelativeLayout.addView(buttonLeftWithMargin);

        // Setting the RelativeLayout as our content view
        setContentView(mainRelativeLayout, relativeLayoutParameters);
    }

    private void AddButtonLayout(Button button, int centerInParent, int marginLeft, int marginTop, int marginRight, int marginBottom) {
        // Defining the layout parameters of the Button
        RelativeLayout.LayoutParams buttonLayoutParameters = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);

        // Add Margin to the LayoutParameters
        buttonLayoutParameters.setMargins(marginLeft, marginTop, marginRight, marginBottom);

        // Add Rule to Layout
        buttonLayoutParameters.addRule(centerInParent);

        // Setting the parameters on the Button
        button.setLayoutParams(buttonLayoutParameters);     
    }

    private void AddButtonLayout(Button button, int centerInParent) {
        // Just call the other AddButtonLayout Method with Margin 0
        AddButtonLayout(button, centerInParent, 0 ,0 ,0 ,0);
    }
}

和你应该是这样的：