AlertDialog 封装

package com.example.admin.alertdialog.alertdialog; import android.app.AlertDialog; import android.content.Context; import android.content.DialogInterface.OnClickListener; /  * 对话框(AlertDialog)封装类  *  * @author 苹果  */ public class AlertDialogActivity { /  * @param context 上下文  * @param icon 图标，如：R.drawable.icon  * @param title 标题  * @param message 显示内容  * @param btnName 按钮名称  * @param listener 监听器，需实现DialogInterface.OnClickListener接口  * @return  */  public static AlertDialog one(Context context, int icon, String title, String message, String btnName, OnClickListener listener) { // 定义dialog为空  AlertDialog dialog = null; AlertDialog.Builder dialog1 = new AlertDialog.Builder(context); // 设置对话框的标题  dialog1.setTitle(title); // 设置对话框的图标  dialog1.setIcon(icon); // 设置对话框的显示内容  dialog1.setMessage(message); // 添加按钮dialog1.setPositiveButton(btnName, new  // DialogInterface.OnClickListener()  dialog1.setPositiveButton(btnName, listener); // 创建一个普通对话框  dialog = dialog1.create(); return dialog; } /  * @param context 上下文  * @param icon 图标，如：R.drawable.icon  * @param title 标题  * @param message 显示内容  * @param btnName 按钮名称  * @param listener 监听器，需实现DialogInterface.OnClickListener接口  * @return  */  public static AlertDialog two(Context context, int icon, String title, String message, String btnName, OnClickListener listener, String btnName1, OnClickListener listener1) { AlertDialog dialog = null; AlertDialog.Builder dialog1 = new AlertDialog.Builder(context); dialog1.setTitle(title); dialog1.setIcon(icon); dialog1.setMessage(message); dialog1.setPositiveButton(btnName, listener); dialog1.setNegativeButton(btnName1, listener1); dialog = dialog1.create(); return dialog; } /  * @param context 上下文  * @param icon 图标，如：R.drawable.icon  * @param title 标题  * @param message 显示内容  * @param btnName 按钮名称  * @param listener 监听器，需实现DialogInterface.OnClickListener接口  * @return  */  public static AlertDialog three(Context context, int icon, String title, String message, String btnName, OnClickListener listener, String btnName1, OnClickListener listener1, String btnName2, OnClickListener listener2) { AlertDialog dialog = null; AlertDialog.Builder dialog1 = new AlertDialog.Builder(context); dialog1.setIcon(icon); dialog1.setMessage(message); dialog1.setPositiveButton(btnName, listener); dialog1.setNegativeButton(btnName1, listener1); dialog1.setNeutralButton(btnName2, listener2); dialog = dialog1.create(); return dialog; } }

package com.example.admin.alertdialog; import android.app.AlertDialog; import android.content.DialogInterface; import android.content.Intent; import android.os.Bundle; import android.support.v7.app.AppCompatActivity; import android.view.View; import android.widget.Button; import android.widget.Toast; public class MainActivity extends AppCompatActivity { private Button btn_AlertDialogNew; @Override  protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); //实例化AlertDialog  btn_AlertDialogNew = (Button) findViewById(R.id.button); //给AlertDialog添加监听  btn_AlertDialogNew.setOnClickListener(new View.OnClickListener() { @Override  public void onClick(View v) { //调用封装的AlertDialog  AlertDialog.Builder dialog = new AlertDialog.Builder(MainActivity.this); //设置对话框标题  dialog.setTitle("提示"); //设置对话框图标  dialog.setIcon(R.mipmap.ic_launcher); //设置对话框显示内容  dialog.setMessage("显示内容"); //调用AlertDialog确定按钮  dialog.setPositiveButton("确定", new DialogInterface.OnClickListener() { @Override  public void onClick(DialogInterface arg0, int arg1) { //实例化Intent跳转  Intent intent = new Intent(); //指定跳转页面  intent.setClass(MainActivity.this, Main2Activity.class); //开始跳转  startActivity(intent); //使用Toast提示  Toast.makeText(MainActivity.this, "点击确定并跳转", Toast.LENGTH_SHORT).show(); //点击后关闭对话框  arg0.dismiss(); } }); //调用AlertDialog取消按钮  dialog.setNegativeButton("取消", new DialogInterface.OnClickListener() { @Override  public void onClick(DialogInterface arg0, int arg1) { Toast.makeText(MainActivity.this, "点击取消", Toast.LENGTH_SHORT).show(); //点击后关闭对话框  arg0.dismiss(); } }); //调用AlertDialog帮助按钮  dialog.setNeutralButton("帮助", new DialogInterface.OnClickListener() { @Override  public void onClick(DialogInterface arg0, int arg1) { Toast.makeText(MainActivity.this, "点击帮助", Toast.LENGTH_SHORT).show(); //点击后关闭对话框  arg0.dismiss(); } }); //显示AlertDialog  dialog.show(); } }); } }