弹窗系列：用Dialog实现显示在底部的弹窗效果

代码很简单，先上效果：

核心代码：

  @Override
    protected void onStart() {
        super.onStart();
        getWindow().setBackgroundDrawableResource(android.R.color.transparent); //去除自带的背景
        
        //宽度占满，去除Dialog左右自带的边距
      getWindow().setLayout(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT);
        //设置显示在底部
        getWindow().setGravity(Gravity.BOTTOM);
    }

BaseBottomDialog代码

public class BaseBottomDialog extends Dialog {
    View view;
    Context context;
    int layoutId;
    public BaseBottomDialog(Context context, int layoutId) {
        super(context);
        this.context = context;
        this.layoutId = layoutId;
    }



    @Override
    protected void onCreate(Bundle savedInstanceState) {
        getWindow().requestFeature(Window.FEATURE_NO_TITLE);//去除标题
        super.onCreate(savedInstanceState);
        view = View.inflate(context, layoutId, new LinearLayout(getContext())); //给个默认的ViewGroup,解决最外层布局的margin问题
        if (view != null) {
            setContentView(view);
        }
    }

    @Override
    protected void onStart() {
        super.onStart();
        getWindow().setBackgroundDrawableResource(android.R.color.transparent); //去除自带的背景

        getWindow().setLayout(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT); //宽度占满
        getWindow().setGravity(Gravity.BOTTOM);
    }

}

弹窗布局dialog_share.xml代码贴出来，图片要放后面了。

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="190dp"
    android:background="@drawable/dialog_bg"
    xmlns:android="http://schemas.android.com/apk/res/android">

        <RelativeLayout
            android:id="@+id/rl_content"
            android:layout_marginTop="25dp"
            android:layout_width="wrap_content"
            android:layout_centerHorizontal="true"
            android:layout_height="wrap_content">

            <ImageView
                android:id="@+id/iv_wx_chat"
                android:layout_width="50dp"
                android:layout_height="50dp"
                android:src="@drawable/icon_wx_session" />

            <ImageView
                android:id="@+id/iv_wx_circle"
                android:layout_width="50dp"
                android:layout_height="50dp"
                android:layout_toRightOf="@id/iv_wx_chat"
                android:src="@drawable/icon_wx_timeline"
                android:layout_marginLeft="56dp"
                />
            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="微信"
                android:gravity="center"
                android:layout_alignLeft="@id/iv_wx_chat"
                android:layout_alignRight="@id/iv_wx_chat"
                android:layout_below="@id/iv_wx_chat"
                android:layout_marginTop="8dp"
                android:textColor="#ff999999"
                android:textSize="14sp"
                />

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="朋友圈"
                android:gravity="center"
                android:layout_alignLeft="@id/iv_wx_circle"
                android:layout_alignRight="@id/iv_wx_circle"
                android:layout_below="@id/iv_wx_circle"
                android:layout_marginTop="8dp"
                android:textColor="#ff999999"
                android:textSize="14sp"
                />

        </RelativeLayout>

        <TextView
            android:layout_width="match_parent"
            android:layout_height="56dp"
            android:layout_below="@id/divider"
            android:gravity="center"
            android:text="取消"
            android:textColor="#ff292828"
            android:textSize="16sp" />

        <View
            android:id="@+id/divider"
            android:layout_width="match_parent"
            android:layout_height="16dp"
            android:layout_below="@id/rl_content"
            android:layout_marginTop="15dp"
            android:background="#EDF4FF" />

    </RelativeLayout>

聊天图片	朋友圈图片

调用逻辑很简单。

  BaseBottomDialog dialog = new BaseBottomDialog(this, R.layout.dialog_share);
  dialog.show();

背景圆角xml也贴上：

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android">
    <corners android:topLeftRadius="20dp"
        android:topRightRadius="20dp"/>
    <solid android:color="#FFFFFF"/>
</shape>

参考：Android实现底部对话框BottomDialog