android自定义AlertDialog对话框

2019-12-12 04:00:32

字体：大中小

来源：转载

供稿：网友

前面一篇文章//www.VeVB.COm/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：