Android实现自定义dialog的代码

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package com.example.atry.test;
import android.app.Dialog;
import android.content.Context;
import android.os.Bundle;
import android.support.v7.app.ActionBar;
import android.support.v7.app.AppCompatActivity;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.LinearLayout;
public class tianjiayaokong extends AppCompatActivity {
// 这个为点击显示dialog的布局
private LinearLayout kongtiaol;
// dialog中的取消
private LinearLayout yaokongCancel;
@Override
protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_tianjiayaokong);
  ActionBar actiOnBar= getSupportActionBar();
  if(actionBar != null) {
    actionBar.hide();
  }
  kOngtiaol= findViewById(R.id.kongtiaol);
  kongtiaol.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View view) {
      showDialog();
    }
  });
}
/**
 * 显示dialog
 */
private void showDialog()
{
  LayoutInflater inflater = getLayoutInflater();
  //通过inflate加载出自定义布局
  View view = inflater.inflate(R.layout.activity_dialog_componet,null);
  final Dialog dialog = new Dialog(this,R.style.custom_dialog);
  dialog.setContentView(view);
  yaokOngCancel= view.findViewById(R.id.yaokongCancel);
  yaokongCancel.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View view) {
      dialog.dismiss();
    }
  });
  dialog.show();
}
}