Android自定义AlertDialog

做项目系统退出时，直接调用系统的AlertDialog感觉太难看了，于是自己定义了一番，直接上代码。

1、自定义类MyDialog继承Dialog

  1 public class MyDialog extends Dialog {
  2  
  3     public MyDialog(Context context, int theme) {
  4         super(context, theme);
  5     }
  6  
  7     public MyDialog(Context context) {
  8         super(context);
  9     }
 10  
 11     public static class Builder {
 12  
 13         private Context context;
 14         private String title;
 15         private String message;
 16         private String positiveButtonText;
 17         private String negativeButtonText;
 18         private View contentView;
 19  
 20         private DialogInterface.OnClickListener 
 21                         positiveButtonClickListener,
 22                         negativeButtonClickListener;
 23  
 24         public Builder(Context context) {
 25             this.context = context;
 26         }
 27  
 28 
 29         public Builder setMessage(String message) {
 30             this.message = message;
 31             return this;
 32         }
 33  
 34 
 35         public Builder setMessage(int message) {
 36             this.message = (String) context.getText(message);
 37             return this;
 38         }
 39  
 40 
 41         public Builder setTitle(int title) {
 42             this.title = (String) context.getText(title);
 43             return this;
 44         }
 45  
 46 
 47         public Builder setTitle(String title) {
 48             this.title = title;
 49             return this;
 50         }
 51  
 52         public Builder setContentView(View v) {
 53             this.contentView = v;
 54             return this;
 55         }
 56  
 57 
 58         public Builder setPositiveButton(int positiveButtonText,
 59                 DialogInterface.OnClickListener listener) {
 60             this.positiveButtonText = (String) context
 61                     .getText(positiveButtonText);
 62             this.positiveButtonClickListener = listener;
 63             return this;
 64         }
 65 
 66         public Builder setPositiveButton(String positiveButtonText,
 67                 DialogInterface.OnClickListener listener) {
 68             this.positiveButtonText = positiveButtonText;
 69             this.positiveButtonClickListener = listener;
 70             return this;
 71         }
 72  
 73 
 74         public Builder setNegativeButton(int negativeButtonText,
 75                 DialogInterface.OnClickListener listener) {
 76             this.negativeButtonText = (String) context
 77                     .getText(negativeButtonText);
 78             this.negativeButtonClickListener = listener;
 79             return this;
 80         }
 81  
 82     
 83         public Builder setNegativeButton(String negativeButtonText,
 84                 DialogInterface.OnClickListener listener) {
 85             this.negativeButtonText = negativeButtonText;
 86             this.negativeButtonClickListener = listener;
 87             return this;
 88         }
 89  
 90  
 91         public MyDialog create() {
 92             LayoutInflater inflater = (LayoutInflater) context
 93                     .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
 94             // instantiate the dialog with the custom Theme
 95             final MyDialog dialog = new MyDialog(context, 
 96                     R.style.MyDialog);
 97             View layout = inflater.inflate(R.layout.customdialog, null);
 98             dialog.addContentView(layout, new LayoutParams(
 99                     LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
100             ((TextView) layout.findViewById(R.id.dialog_title)).setText(title);
101             if (positiveButtonText != null) {
102                 ((Button) layout.findViewById(R.id.dialog_positive))
103                         .setText(positiveButtonText);
104                 if (positiveButtonClickListener != null) {
105                     ((Button) layout.findViewById(R.id.dialog_positive))
106                             .setOnClickListener(new View.OnClickListener() {
107                                 public void onClick(View v) {
108                                     positiveButtonClickListener.onClick(
109                                             dialog, 
110                                             DialogInterface.BUTTON_POSITIVE);
111                                 }
112                             });
113                 }
114             } else {
115                 layout.findViewById(R.id.dialog_positive).setVisibility(
116                         View.GONE);
117             }
118             if (negativeButtonText != null) {
119                 ((Button) layout.findViewById(R.id.dialog_negative))
120                         .setText(negativeButtonText);
121                 if (negativeButtonClickListener != null) {
122                     ((Button) layout.findViewById(R.id.dialog_negative))
123                             .setOnClickListener(new View.OnClickListener() {
124                                 public void onClick(View v) {
125                                     negativeButtonClickListener.onClick(
126                                             dialog, 
127                                             DialogInterface.BUTTON_NEGATIVE);
128                                 }
129                             });
130                 }
131             } else {
132                 layout.findViewById(R.id.dialog_negative).setVisibility(
133                         View.GONE);
134             }
135             if (message != null) {
136 //                ((TextView) layout.findViewById(
137 //                        R.id.message)).setText(message);
138             } 
139             else if (contentView != null) {
140                 ((LinearLayout) layout.findViewById(R.id.content))
141                         .removeAllViews();
142                 ((LinearLayout) layout.findViewById(R.id.content))
143                         .addView(contentView, 
144                                 new LayoutParams(
145                                         LayoutParams.WRAP_CONTENT, 
146                                         LayoutParams.WRAP_CONTENT));
147             }
148             dialog.setContentView(layout);
149             return dialog;
150         }
151         
152  
153     }

2、定义显示的customdialog.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="300dp"
    android:layout_height="wrap_content"
    android:background="#CFCEC8"
    android:orientation="vertical" >

    <LinearLayout
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical" >

        <LinearLayout
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical" >

            <TextView
                android:id="@+id/dialog_title"
                android:layout_width="fill_parent"
                android:layout_height="wrap_content"
                android:layout_marginTop="8dp"
                android:gravity="center_horizontal"                android:textColor="#010101"
                android:textSize="20dp" />

            <View
                android:layout_width="fill_parent"
                android:layout_height="1px"
                android:layout_marginTop="10dp"
                android:background="@drawable/title_bar" />
        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="fill_parent"
            android:gravity="center_horizontal" >

            <Button
                android:id="@+id/dialog_positive"
                android:layout_width="120dp"
                android:layout_height="wrap_content"
                android:layout_marginBottom="10dp"
                android:layout_marginTop="8dp"
                android:background="#00000000"                android:textSize="20dp" />

            <View
                android:layout_width="1px"
                android:layout_height="fill_parent"
                android:layout_marginLeft="20dp"
                android:background="@drawable/title_bar" />

            <Button
                android:id="@+id/dialog_negative"
                android:layout_width="120dp"
                android:layout_height="wrap_content"
                android:layout_marginBottom="10dp"
                android:layout_marginLeft="20dp"
                android:layout_marginTop="8dp"
                android:background="#00000000"                android:textSize="20dp" />
        </LinearLayout>
    </LinearLayout>

</LinearLayout>

3、在styles里加入显示风格

<style name="MyDialog" parent="@android:Theme.Dialog">
        <item name="android:windowFrame">@null</item>
        <item name="android:windowNoTitle">true</item>
        <item name="android:windowIsFloating">true</item>
        <item name="android:windowContentOverlay">@null</item>
    </style>

使用如下

 1             Dialog dialog;
 2             MyDialog.Builder builder = new MyDialog.Builder(
 3                     JuCanBaoActivity.this);
 4             builder.setTitle("确定退出聚餐宝？");
 5             builder.setNegativeButton("取消",
 6                     new DialogInterface.OnClickListener() {
 7                         public void onClick(DialogInterface dialog, int which) {
 8                             dialog.cancel();
 9                         }
10                     });
11             builder.setPositiveButton("确定",
12                     new DialogInterface.OnClickListener() {
13                         public void onClick(DialogInterface dialog, int which) {
14                             dialog.cancel();
15                             JuCanBaoActivity.this.finish();
16                             android.os.Process.killProcess(android.os.Process
17                                     .myPid());
18                             System.exit(0);
19                         }
20                     });
21             dialog = builder.create();
22             dialog.show();