android自定义AlertDialog对话框

前面一篇文章http://www.jb51.net/article/103036.htm介绍了alertDialog的四种简单使用，但是有些时候为了让整个app的风格统一，或者说前面的四种形式不符合项目中的需求，这个时候就需要我们自定义alertDialog了。直接上代码

CustomAlertDialog:

import android.app.Dialog;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView; 

/**
 * Created by yk on 2017/1/17.
 */ 

public class CustomAlertDialog extends Dialog implements View.OnClickListener { 

 public interface OnDialogButtonClickListener {
  /**
   * 点击按钮的回调方法
   *
   * @param requestCode
   * @param isPositive
   */
  void onDialogButtonClick(int requestCode, boolean isPositive);
 } 

 private Context context;
 private String title;
 private String message;
 private String strPositive;
 private String strNegative;
 private int requestCode;
 private OnDialogButtonClickListener listener; 

 public CustomAlertDialog(Context context, String title, String message, int requestCode,
        OnDialogButtonClickListener listener) {
  super(context, R.style.MyDialog);
  this.context=context;
  this.title=title;
  this.message=message;
  this.requestCode=requestCode;
  this.listener=listener; 

 } 

 private TextView tvTitle;
 private TextView tvMessage;
 private Button btnPositive;
 private Button btnNegative; 

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.alert_dialog);
//  setCancelable(false);//设置点击对话框外部和按返回键都不可以取消
//  setCanceledOnTouchOutside(false);//设置点击对话框外部是否可以取消，默认是不可以取消（但是点返回键可以取消） 

  tvTitle = (TextView) findViewById(R.id.tvAlertDialogTitle);
  tvMessage = (TextView) findViewById(R.id.tvAlertDialogMessage);
  btnPositive = (Button) findViewById(R.id.btnAlertDialogPositive);
  btnNegative = (Button) findViewById(R.id.btnAlertDialogNegative); 

  tvTitle.setText(title);
  tvMessage.setText(message); 

  btnPositive.setOnClickListener(this);
  btnNegative.setOnClickListener(this);
 } 

 @Override
 public void onClick(View view) {
  switch (view.getId()){
   case R.id.btnAlertDialogPositive:
    //确定按钮
    listener.onDialogButtonClick(requestCode,true);
    break;
   case R.id.btnAlertDialogNegative:
    //取消按钮
    listener.onDialogButtonClick(requestCode,false);
    break;
  }
  dismiss();
 }
} 

 MainActivity:

package com.example.yk.dialogtest; 

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.Toast; 

public class CustomDialogActivity extends AppCompatActivity implements CustomAlertDialog.OnDialogButtonClickListener { 

 private static final int REQUEST_CODE_FIRST = 1; 

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_custom_dialog);
  CustomAlertDialog alertDialog=new CustomAlertDialog(this,"title","message",REQUEST_CODE_FIRST,this);
  alertDialog.show(); 

 } 

 @Override
 public void onDialogButtonClick(int requestCode, boolean isPositive) {
  if(requestCode==REQUEST_CODE_FIRST && isPositive){
   Toast.makeText(this, "点击了确定", Toast.LENGTH_SHORT).show();
  } else if (requestCode==REQUEST_CODE_FIRST && !isPositive) {
   Toast.makeText(this, "点击了取消", Toast.LENGTH_SHORT).show();
  }
 }
}

实现的效果：

如果我们需要自定义“确定”和“取消”按钮所显示的字，可以再写一个构造方法，比如：

public AlertDialog(Context context, String title, String message,String strPositive, String strNegative, int requestCode, OnDialogButtonClickListener listener) {
  super(context, R.style.MyDialog); 

  this.context = context;
  this.title = title;
  this.message = message;
  this.strPositive = strPositive;
  this.strNegative = strNegative;
  this.requestCode = requestCode;
  this.listener = listener;
 }

if(!TextUtils.isEmpty(strPositive)){
   btnPositive.setText(strPositive);
  }
  if(!TextUtils.isEmpty(strNegative)){
   btnNegative.setText(strNegative);
  }

实现的效果：

源码(包括上篇文章中四种简单alertDialog的使用)：http://xiazai.jb51.net/201701/yuanma/androidAlertDialog(jb51.net).rar

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持我们。