如何设置layout_gravity编程的按钮？

我发现这个例子在互联网上，但它只是抛出了我一个空指针异常：

 按钮用作MyButton =新的按钮（这一点）;

    LinearLayout.LayoutParams LLLP =（LinearLayout.LayoutParams）MyButton.getLayoutParams（）;
    lllp.gravity = Gravity.RIGHT;
    MyButton.setLayoutParams（LLLP）;


    MyLinearLayout.addView（用作MyButton）;
 

解决方案

  LinearLayout.LayoutParams PARAMS =新LinearLayout.LayoutParams（LayoutParams.WRAP_CONTENT，LayoutParams.FILL_PARENT）;
params.weight = 1.0F;
params.gravity = Gravity.TOP;

button.setLayoutParams（PARAMS）;
 

有关重力值，以及如何设置重力检查重力

How to set layout_gravity programatically for buttons?

I found this example on internet, but its simply throws me a NullPointer exception:

 Button MyButton = new Button(this);

    LinearLayout.LayoutParams  lllp=(LinearLayout.LayoutParams)MyButton.getLayoutParams();
    lllp.gravity=Gravity.RIGHT;
    MyButton.setLayoutParams(lllp); 


    MyLinearLayout.addView(MyButton);

LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.FILL_PARENT);
params.weight = 1.0f;
params.gravity = Gravity.TOP;

button.setLayoutParams(params);

For gravity values and how to set gravity check Gravity