android自定义AlertDialog对话框

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前面一篇文章https://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：