Android - 按钮 go 不在屏幕边缘，但文本视图适合屏幕

Question

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I firstly added the button, and try to add new text view, but when I infer constraints, the button goes off the screen. I tried to change the margin_Top, end, right, bottom, but it doesn't work.

Answer 1

Give your button a width and height but not zero.