设置底部弹出菜单

一、步骤

1、引用依赖
implementation 'com.android.support:design:26.1.0'
2、创建Layout布局
bottomdailog.xml
3、创建BottomSheetDialog
BottomSheetDialog dialog = new BottomSheetDialog(this);4、引入自定View
View dialogView = LayoutInflater.from(this).inflate(R.layout.bottomdailog, null);
5、引用控件
findViewById(R.id.more_login_exception)6、控件的点击事件处理
.setOnClickListener（this）7、View添加到BottomSheetDialog
dialog.setContentView(dialogView);8、显示.show()
dialog.show();

二、完整代码

1、页面布局
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/lv"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">

<TextView
android:id="@+id/more_login_exception"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:padding="10dp"
android:text="登录异常"
android:textSize="20sp" />

<View
android:layout_width="match_parent"
android:layout_height="0.5dp"
android:layout_marginLeft="20dp"
android:layout_marginRight="20dp"
android:background="@color/colorHint" />

<TextView
android:id="@+id/more_contact_customer"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:padding="10dp"
android:text="联系客服"
android:textSize="20sp" />

<View
android:layout_width="match_parent"
android:layout_height="5dp"

android:background="@color/colorHint" />

<TextView
android:id="@+id/tv_cancel"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:padding="10dp"
android:text="关闭"
android:textSize="20sp" />
</LinearLayout>
2、方法调用
public void showDialog() {
final BottomSheetDialog dialog = new BottomSheetDialog(this);
View dialogView = LayoutInflater.from(this).inflate(R.layout.bottomdailog, null);

TextView more_login_exception = dialogView.findViewById(R.id.more_login_exception);
TextView more_contact_customer = dialogView.findViewById(R.id.more_contact_customer);
TextView tv_cancel = dialogView.findViewById(R.id.tv_cancel);

more_login_exception.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(LoginActivity.this, "登录异常", Toast.LENGTH_SHORT).show();
dialog.dismiss();
}
});
more_contact_customer.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(LoginActivity.this, "联系客服", Toast.LENGTH_SHORT).show();
dialog.dismiss();
}
});

tv_cancel.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
dialog.dismiss();
}
});

dialog.setContentView(dialogView);
dialog.show();
}