我使用 TextInputLayout 來包裝 TextInputEditText ，當(dāng)我單擊編輯文本開始輸入提示時，提示消失而不是出現(xiàn)在行上方。<android.support.design.widget.TextInputLayout             android:id="@+id/animaldisc_et"             android:layout_width="match_parent"             android:layout_height="wrap_content"             android:layout_marginStart="8dp"             android:layout_marginLeft="8dp"             android:layout_marginTop="16dp"             android:layout_marginEnd="8dp"             android:layout_marginRight="8dp"             app:layout_constraintStart_toStartOf="parent"             app:layout_constraintTop_toBottomOf="@+id/breed_et">             <android.support.design.widget.TextInputEditText                 android:layout_width="wrap_content"                 android:layout_height="wrap_content"                 android:ems="10"                 android:hint="Description"                 android:inputType="textPersonName"                 app:layout_constraintEnd_toEndOf="parent"                 app:layout_constraintHorizontal_bias="0.503"                  />         </android.support.design.widget.TextInputLayout>