以编程方式将小吃店的位置更改为顶部[重复]

Question

我希望在 snakbar 出现时显示在顶部。为此我写了这个命令：

Snackbar mSnak = Snackbar.make(viewHolder.messageBlock, str, Snackbar.LENGTH_SHORT);
TextView mTextView = mSnak.getView().findViewById(android.support.design.R.id.snackbar_text);
mTextView.setTextAlignment(View.TEXT_ALIGNMENT_CENTER);                                  
FrameLayout.LayoutParams params = (FrameLayout.LayoutParams)mSnak.getView().getLayoutParams();
params.gravity = Gravity.TOP;
mSnak.getView().setLayoutParams(params);
mSnak.show();

但它不起作用？？并且仍然出现在底部。如何更改 SnackBar 的初始对齐方式？？

Answer 1

使用以下命令使快餐栏出现在屏幕顶部：

Snackbar snack = Snackbar.make(findViewById(android.R.id.content), "Had a snack at Snackbar", Snackbar.LENGTH_LONG);

View view = snack.getView();
FrameLayout.LayoutParams params =(FrameLayout.LayoutParams)view.getLayoutParams();
params.gravity = Gravity.TOP;
view.setLayoutParams(params);
snack.show();