只需把代码copy进入oncreate方法即可运行 代码参考自: , 有改动
- RelativeLayout rl = new RelativeLayout(this);
- Button btn1 = new Button(this);
- btn1.setText("----------------------");
- btn1.setId(1);
- RelativeLayout.LayoutParams lp1 = new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
- lp1.addRule(RelativeLayout.ALIGN_PARENT_TOP);
- lp1.addRule(RelativeLayout.CENTER_HORIZONTAL, RelativeLayout.TRUE);
- // btn1 位于父 View 的顶部,在父 View 中水平居中
- rl.addView(btn1, lp1 );
- Button btn2 = new Button(this);
- btn2.setText("|\n|\n|\n|\n|\n|");
- btn2.setId(2);
- RelativeLayout.LayoutParams lp2 = new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
- lp2.addRule(RelativeLayout.BELOW, 1);
- lp2.addRule(RelativeLayout.ALIGN_LEFT, 1);
- // btn2 位于 btn1 的下方、其左边和 btn1 的左边对齐
- rl.addView(btn2, lp2);
- Button btn3 = new Button(this);
- btn3.setText("|\n|\n|\n|\n|\n|");
- btn3.setId(3);
- RelativeLayout.LayoutParams lp3 = new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
- lp3.addRule(RelativeLayout.BELOW, 1);
- lp3.addRule(RelativeLayout.RIGHT_OF, 2);
- lp3.addRule(RelativeLayout.ALIGN_RIGHT, 1);
- // btn3 位于 btn1 的下方、btn2 的右方且其右边和 btn1 的右边对齐(要扩充)
- rl.addView(btn3,lp3);
- Button btn4 = new Button(this);
- btn4.setText("--------------------------------------------");
- btn4.setId(4);
- RelativeLayout.LayoutParams lp4 = new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
- lp4.addRule(RelativeLayout.BELOW, 2);
- lp4.addRule(RelativeLayout.CENTER_HORIZONTAL, RelativeLayout.TRUE);
- // btn4 位于 btn2 的下方,在父 Veiw 中水平居中
- rl.addView(btn4,lp4);
- setContentView(rl);