Android custom dialog bottom up pop up instance code

The specific code is as follows:

package com.example.idmin.myapplication.wiget;
import android.app.Dialog;
import android.content.Context;
import android.os.Bundle;
import android.view.Gravity;
import android.view.View;
import android.view.WindowManager;
import android.widget.TextView;
import com.example.idmin.myapplication.R;
import butterknife.BindView;
import butterknife.ButterKnife;
import butterknife.OnClick;
public class BottomDialog extends Dialog {
  @BindView(R.id.chang)
  TextView chang;
  @BindView(R.id.exite)
  TextView exite;
  @BindView(R.id.cancel)
  TextView cancel;
  private BottomDialogAlertListener listener;
  private Object param;
  private String text1;
  private String text2;
  private String cansleText;
  public BottomDialog(Context context, BottomDialogAlertListener listener, Object param, String text1, String text2, String cansleText) {
    super(context, R.style.dialog1);
    this.listener = listener;
    this.param = param;
    this.text1 = text1;
    this.text2 = text2;
    this.cansleText = cansleText;
  }
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.dialog_bottom);
    ButterKnife.bind(this);
    setCancelable(false);
    setCanceledOnTouchOutside(false);
    if (listener != null) {
      listener.onDialogCreate(this, param);
    }
    setView();
  }
  private void setView() {
    chang.setText(text1);
    exite.setText(text2);
    cancel.setText(cansleText);
  }
  @OnClick({R.id.chang, R.id.exite, R.id.cancel})
  public void onViewClicked(View view) {
    switch (view.getId()) {
      case R.id.chang:
        if (listener != null) {
          listener.chenge(this,param);
        }
        break;
      case R.id.exite:
        if (listener != null) {
          listener.excite(this,param);
        }
        break;
      case R.id.cancel:
        if (listener != null) {
          listener.cancel(this,param);
        }
        break;
    }
  }
  @Override
  public void show() {
    super.show();
    /**
     *  Set the width of full screen, which should be set in show The back of 
     */
    WindowManager.LayoutParams layoutParams = getWindow().getAttributes();
    layoutParams.gravity = Gravity.BOTTOM;
    layoutParams.width = WindowManager.LayoutParams.MATCH_PARENT;
    layoutParams.height = WindowManager.LayoutParams.WRAP_CONTENT;
    getWindow().getDecorView().setPadding(0, 0, 0, 0);
    getWindow().setAttributes(layoutParams);
  }
}
 <!--  Customize dialog Style  -->
<style name="dialog1" parent="@android:style/Theme.Dialog">
  <item name="android:windowFrame">@null</item>
  <item name="android:windowIsFloating">true</item>
  <item name="android:windowIsTranslucent">false</item>
  <item name="android:windowNoTitle">true</item>
  <item name="android:background">@android:color/transparent</item>
  <item name="android:windowBackground">@android:color/transparent</item>
  <item name="android:backgroundDimEnabled">true</item>
  <item name="android:layout_width">match_parent</item>
  <!--  Enter and exit animation  -->
  <item name="android:windowAnimationStyle">@style/BottomDialogAnimation</item>
</style>
 <!--  Enter and exit animation  -->
<style name="BottomDialogAnimation">
  <!-- Enter  -->
  <item name="android:windowEnterAnimation">@anim/dialog_enter_from_bottom</item>
  <!-- Quit -->
  <item name="android:windowExitAnimation">@anim/dialog_exit_to_bottom</item>
</style>
 <!--dialog_enter_from_bottom -->
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
  <translate
    android:duration="200"
    android:fromYDelta="100%p"
    android:toYDelta="0"></translate>
</set>
 <!--dialog_exit_to_bottom -->
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
  <translate
    android:duration="200"
    android:fromYDelta="0"
    android:toYDelta="100%p"></translate>
</set>

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