android 自定义AlertDialog

前面一篇文章http://blog.csdn.net/qq_33748378/article/details/54408286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:

package com.example.yk.dialogtest;

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://download.csdn.net/detail/qq_33748378/9740725