如何以编程方式在edittext的右上角设置按钮？

Question

如何以编程方式设置EditText右上角的按钮？

FrameLayout fl = new FrameLayout(this);
lv.addView(fl);

searchTxt = new EditText(this);
fl.addView(searchTxt);

btnSearch = new Button(this);           

我试过这个

btnSearch.setGravity(Gravity.RIGHT | Gravity.CENTER_VERTICAL);
fl.addView(btnSearch);

和

LinearLayout.LayoutParams param = new LinearLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, 0);
param.gravity = Gravity.RIGHT;
fl.addView(btnSearch, param);

但按钮仍在左下角。

Answer 1

您需要为按钮设置布局参数，如下所示：

FrameLayout.LayoutParams param = new FrameLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT, 0);
param.gravity = Gravity.RIGHT;

并将其设为按钮

btnSearch.setLayoutParam(param);
f1.addView(btnSearch);

Answer 2

在layoutparams

中将Fill_Parent设置为LinearLayout为 width