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

public class MyDialog extends Dialog {
 
    public MyDialog(Context context, int theme) {
        super(context, theme);
    }
 
    public MyDialog(Context context) {
        super(context);
    }
 
    public static class Builder {
 
        private Context context;
        private String title;
        private String message;
        private String positiveButtonText;
        private String negativeButtonText;
        private View contentView;
 
        private DialogInterface.OnClickListener 
                        positiveButtonClickListener,
                        negativeButtonClickListener;
 
        public Builder(Context context) {
            this.context = context;
        }
 

        public Builder setMessage(String message) {
            this.message = message;
            return this;
        }
 

        public Builder setMessage(int message) {
            this.message = (String) context.getText(message);
            return this;
        }
 

        public Builder setTitle(int title) {
            this.title = (String) context.getText(title);
            return this;
        }
 

        public Builder setTitle(String title) {
            this.title = title;
            return this;
        }
 
        public Builder setContentView(View v) {
            this.contentView = v;
            return this;
        }
 

        public Builder setPositiveButton(int positiveButtonText,
                DialogInterface.OnClickListener listener) {
            this.positiveButtonText = (String) context
                    .getText(positiveButtonText);
            this.positiveButtonClickListener = listener;
            return this;
        }

        public Builder setPositiveButton(String positiveButtonText,
                DialogInterface.OnClickListener listener) {
            this.positiveButtonText = positiveButtonText;
            this.positiveButtonClickListener = listener;
            return this;
        }
 

        public Builder setNegativeButton(int negativeButtonText,
                DialogInterface.OnClickListener listener) {
            this.negativeButtonText = (String) context
                    .getText(negativeButtonText);
            this.negativeButtonClickListener = listener;
            return this;
        }
 
    
        public Builder setNegativeButton(String negativeButtonText,
                DialogInterface.OnClickListener listener) {
            this.negativeButtonText = negativeButtonText;
            this.negativeButtonClickListener = listener;
            return this;
        }
 
 
        public MyDialog create() {
            LayoutInflater inflater = (LayoutInflater) context
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            // instantiate the dialog with the custom Theme
            final MyDialog dialog = new MyDialog(context, 
                    R.style.MyDialog);
            View layout = inflater.inflate(R.layout.customdialog, null);
            dialog.addContentView(layout, new LayoutParams(
                    LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
            ((TextView) layout.findViewById(R.id.dialog_title)).setText(title);
            if (positiveButtonText != null) {
                ((Button) layout.findViewById(R.id.dialog_positive))
                        .setText(positiveButtonText);
                if (positiveButtonClickListener != null) {
                    ((Button) layout.findViewById(R.id.dialog_positive))
                            .setOnClickListener(new View.OnClickListener() {
                                public void onClick(View v) {
                                    positiveButtonClickListener.onClick(
                                            dialog, 
                                            DialogInterface.BUTTON_POSITIVE);
                                }
                            });
                }
            } else {
                layout.findViewById(R.id.dialog_positive).setVisibility(
                        View.GONE);
            }
            if (negativeButtonText != null) {
                ((Button) layout.findViewById(R.id.dialog_negative))
                        .setText(negativeButtonText);
                if (negativeButtonClickListener != null) {
                    ((Button) layout.findViewById(R.id.dialog_negative))
                            .setOnClickListener(new View.OnClickListener() {
                                public void onClick(View v) {
                                    negativeButtonClickListener.onClick(
                                            dialog, 
                                            DialogInterface.BUTTON_NEGATIVE);
                                }
                            });
                }
            } else {
                layout.findViewById(R.id.dialog_negative).setVisibility(
                        View.GONE);
            }
            if (message != null) {
//                ((TextView) layout.findViewById(
//                        R.id.message)).setText(message);
            } 
            else if (contentView != null) {
                ((LinearLayout) layout.findViewById(R.id.content))
                        .removeAllViews();
                ((LinearLayout) layout.findViewById(R.id.content))
                        .addView(contentView, 
                                new LayoutParams(
                                        LayoutParams.WRAP_CONTENT, 
                                        LayoutParams.WRAP_CONTENT));
            }
            dialog.setContentView(layout);
            return dialog;
        }
        
 
    }

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

            Dialog dialog;
            MyDialog.Builder builder = new MyDialog.Builder(
                    JuCanBaoActivity.this);
            builder.setTitle("确定退出聚餐宝？");
            builder.setNegativeButton("取消",
                    new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface dialog, int which) {
                            dialog.cancel();
                        }
                    });
            builder.setPositiveButton("确定",
                    new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface dialog, int which) {
                            dialog.cancel();
                            JuCanBaoActivity.this.finish();
                            android.os.Process.killProcess(android.os.Process
                                    .myPid());
                            System.exit(0);
                        }
                    });
            dialog = builder.create();
            dialog.show();