从底部弹出Dialog窗口

效果图

总体结构

dialog_enter.xml //dialog的进入动画

dialog_exit.xml //dialog的退出动画

lay_share.xml //dialog的布局

style.xml // 控制dialog布局Theme,控制弹出框的开关

activity_main.xml //初始布局

MainActivity.java

package com.example.tnt.dialogfrombottom;

import android.app.Dialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.Gravity;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;

public class MainActivity extends AppCompatActivity {

    private Dialog mShareDialog;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
    //按钮 单击事件
    public void btnShowDialog(View view) {
        showDialog();// 单击按钮后 调用显示视图的 showDialog 方法，
    }
    
    /**
     * 显示弹出框
     */
    private void showDialog() {
        if (mShareDialog == null) {
            initShareDialog();
        }
        mShareDialog.show();
    }
    /**
     * 初始化分享弹出框
     */
    private void initShareDialog() {
        mShareDialog = new Dialog(this, R.style.dialog_bottom_full);
        mShareDialog.setCanceledOnTouchOutside(true); //手指触碰到外界取消
        mShareDialog.setCancelable(true);             //可取消 为true
        Window window = mShareDialog.getWindow();      // 得到dialog的窗体
        window.setGravity(Gravity.BOTTOM);
        window.setWindowAnimations(R.style.share_animation);

        View view = View.inflate(this, R.layout.lay_share, null); //获取布局视图
        view.findViewById(R.id.tv_cancel).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if (mShareDialog != null && mShareDialog.isShowing()) {
                    mShareDialog.dismiss();
                }
            }
        });
        window.setContentView(view);
        window.setLayout(WindowManager.LayoutParams.MATCH_PARENT, WindowManager.LayoutParams.WRAP_CONTENT);//设置横向全屏
    }
}