Android开发之自定义对话框

由于系统自带的对话框不好看，于是本人就自定义了一个对话框，以后有类似的就可以直接使用啦。先上效果图：

1，布局文件dialog_clear_normal.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="200dp"
    android:layout_height="wrap_content"
    android:background="@drawable/dialog_bkg_2"
    android:orientation="vertical">

    <TextView
        android:id="@+id/dialog_title"
        android:layout_width="match_parent"
        android:layout_height="40dp"
        android:background="@drawable/dialog_title_bkg"
        android:gravity="center"
        android:paddingBottom="4dp"
        android:paddingTop="4dp"
        android:text="标题"
        android:textColor="@color/textColor_black"
        android:textSize="20sp" />

    <LinearLayout
        android:id="@+id/dialog_content"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:gravity="center">

        <TextView
            android:id="@+id/dialog_message"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_margin="16dp"
            android:text="您确定要删除么？"
            android:textColor="@drawable/radio_btn_text"
            android:textSize="18sp" />
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="35dp"
        android:layout_margin="16dp"
        android:orientation="horizontal">

        <Button
            android:id="@+id/btn_dialog_ok"
            style="@style/btn_style"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:layout_marginLeft="16dp"
            android:layout_marginRight="16dp"
            android:layout_weight="1"
            android:text="确定"
            android:textAllCaps="false"
            android:textSize="18sp" />

        <Button
            android:id="@+id/btn_dialog_cancel"
            style="@style/btn_style"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            android:layout_marginLeft="16dp"
            android:layout_marginRight="16dp"
            android:layout_weight="1"
            android:text="取消"
            android:textAllCaps="false"
            android:textSize="18sp" />

    </LinearLayout>

</LinearLayout>

2，文件夹values/colors.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <color name="colorPrimary">#3F51B5</color>
    <color name="colorPrimaryDark">#303F9F</color>
    <color name="colorAccent">#FF4081</color>

    <color name="white">#ffffff</color>
    <color name="black">#000000</color>
    <color name="textColor_black">#222222</color>
    <color name="transparent">#00000000</color>
    <color name="title_bkg">#48a1ff</color>
    <color name="btn_unselect">#dddddd</color>
    <color name="btn_selected">#aaaaaa</color>
    <color name="right_key_unselect">#80dddddd</color>
    <color name="right_key_selected">#80aaaaaa</color>
    <color name="right_key_textColor">#80222222</color>

    <color name="bkg_num_color">#40ffffff</color>
    <color name="nn">#0000ff</color>
</resources>

3，文件夹values/styles.xml

<resources>

    <!-- Base application theme. -->
    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
        <!-- Customize your theme here. -->
        <item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
    </style>

    <style name="btn_style">
        <item name="android:background">@drawable/button_selector</item>
        <item name="android:textSize">20sp</item>
        <item name="android:textColor">@color/textColor_black</item>
        <item name="android:textAllCaps">false</item>
    </style>

    <style name="Dialog" parent="android:style/Theme.Dialog">
        <item name="android:background">#00000000</item>
        <item name="android:windowBackground">@android:color/transparent</item>
        <item name="android:windowNoTitle">true</item>
        <item name="android:windowIsFloating">true</item>
    </style>

</resources>

4，文件夹drawable/的一些xml文件：

1）

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" >

    <solid android:color="@color/btn_unselect" />

    <stroke
        android:width="1px"
        android:color="@color/textColor_black" />

    <corners
        android:radius="4dp" />

</shape>

2）

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" >

    <!--<solid android:color="@color/rippelColor" />-->
    <solid android:color="@color/btn_selected" />

    <stroke
        android:width="1px"
        android:color="@color/textColor_black" />

    <corners
        android:radius="4dp" />

</shape>

3）

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:drawable="@drawable/button_selected" android:state_selected="true" />
    <item android:drawable="@drawable/button_selected" android:state_focused="true" />
    <item android:drawable="@drawable/button_selected" android:state_pressed="true" />
    <item android:drawable="@drawable/button_selected" android:state_checked="true"/>
    <item android:drawable="@drawable/button_noselected" />

</selector>

4）

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" >

    <solid android:color="#ffffff" />

    <corners
        android:radius="8dp" />

</shape>

5）

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" >

    <solid android:color="@color/title_bkg" />

    <corners
        android:topLeftRadius="8dp"
        android:topRightRadius="8dp"/>

</shape>

6）

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
        <item android:color="@color/textColor_black" android:state_checked="false" />
        <item android:color="@color/title_bkg" android:state_checked="true" />

</selector>

5，自定义一个对话框的类：

package com.gyq.dialog;

import android.app.Dialog;
import android.content.Context;
import android.content.DialogInterface;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.TextView;

/**
 * ${DESC}
 * author: gyq
 * create at 2017/2/7 15:33
 */
public class CustomDialog extends Dialog {
    public CustomDialog(Context context) {
        super(context);
    }

    public CustomDialog(Context context, int theme) {
        super(context, theme);
    }

    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;
        private DialogInterface.OnClickListener negativeButtonClickListener;

        public Builder(Context context) {
            this.context = context;
        }

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

        /**
         * Set the Dialog message from resource
         *
         * @param
         * @return
         */
        public Builder setMessage(int message) {
            this.message = (String) context.getText(message);
            return this;
        }

        /**
         * Set the Dialog title from resource
         *
         * @param title
         * @return
         */
        public Builder setTitle(int title) {
            this.title = (String) context.getText(title);
            return this;
        }

        /**
         * Set the Dialog title from String
         *
         * @param title
         * @return
         */

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

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

        /**
         * Set the positive button resource and it's listener
         *
         * @param positiveButtonText
         * @return
         */
        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 CustomDialog create() {
            LayoutInflater inflater = (LayoutInflater) context
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            // instantiate the dialog with the custom Theme
            final CustomDialog dialog = new CustomDialog(context,R.style.Dialog);
            View layout = inflater.inflate(R.layout.dialog_clear_normal, null);
            dialog.addContentView(layout, new ViewGroup.LayoutParams(
                    ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT));
            // set the dialog title
            ((TextView) layout.findViewById(R.id.dialog_title)).setText(title);
            // set the confirm button
            if (positiveButtonText != null) {
                ((Button) layout.findViewById(R.id.btn_dialog_ok))
                        .setText(positiveButtonText);
                if (positiveButtonClickListener != null) {
                    ((Button) layout.findViewById(R.id.btn_dialog_ok))
                            .setOnClickListener(new View.OnClickListener() {
                                public void onClick(View v) {
                                    positiveButtonClickListener.onClick(dialog,
                                            DialogInterface.BUTTON_POSITIVE);
                                }
                            });
                }
            } else {
                // if no confirm button just set the visibility to GONE
                layout.findViewById(R.id.btn_dialog_ok).setVisibility(
                        View.GONE);
            }
            // set the cancel button
            if (negativeButtonText != null) {
                ((Button) layout.findViewById(R.id.btn_dialog_cancel))
                        .setText(negativeButtonText);
                if (negativeButtonClickListener != null) {
                    ((Button) layout.findViewById(R.id.btn_dialog_cancel))
                            .setOnClickListener(new View.OnClickListener() {
                                public void onClick(View v) {
                                    negativeButtonClickListener.onClick(dialog,
                                            DialogInterface.BUTTON_NEGATIVE);
                                }
                            });
                }
            } else {
                // if no confirm button just set the visibility to GONE
                layout.findViewById(R.id.btn_dialog_cancel).setVisibility(
                        View.GONE);
            }
            // set the content message
            if (message != null) {
                ((TextView) layout.findViewById(R.id.dialog_message)).setText(message);
            } else if (contentView != null) {
                // if no message set
                // add the contentView to the dialog body
                ((LinearLayout) layout.findViewById(R.id.dialog_content))
                        .removeAllViews();
                ((LinearLayout) layout.findViewById(R.id.dialog_content)).addView(
                        contentView, new ViewGroup.LayoutParams(
                                ViewGroup.LayoutParams.MATCH_PARENT,
                                ViewGroup.LayoutParams.MATCH_PARENT));
            }
            dialog.setContentView(layout);
            return dialog;
        }

    }
}

7，使用这个dialog：

CustomDialog.Builder builder = new CustomDialog.Builder(this);
                builder.setTitle("提示");
                builder.setMessage("你确定要清空么？");
                builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        dialog.dismiss();
                    }
                });
                builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
                    @Override
                    public void onClick(DialogInterface dialog, int which) {
                        dialog.dismiss();
                    }
                });
                builder.create().show();

小结：这个自定义的对话宽，点击外面也会消失。有阴影部分，效果还是蛮好看的。