自定义dialog

　
　
　　实习中遇到的需要自定义没有title的dialog，这里图片是我自己乱搞的，大概查了一下百度就开始写了。先是dialog的布局。　

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:background="#00000000"
    android:orientation="vertical">

    <LinearLayout
        android:id="@+id/dialog_content"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@mipmap/dialog_bg">

        <TextView
            android:id="@+id/dialog_message"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center"
            android:paddingLeft="18dp"
            android:paddingRight="18dp"
            android:text="您正在使用小米手机，是否打开自启授权以更好地使用计步功能"
            android:textColor="#000000"
            android:textSize="16sp" />
    </LinearLayout>

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="#00000000"
        android:orientation="horizontal">

        <Button
            android:id="@+id/dialog_left_btn"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:background="@mipmap/dialog_btn"
            android:text="开启"
            android:textColor="#ffffff"
            android:textSize="15sp" />
        <!-- 两个按钮之间要一个分割线，我就塞了个相同的button设置不可点击，宽度设置的很小-->
        <Button
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="0.02"
            android:background="#FEFEFF"
            android:clickable="false"
            android:text=" "
            android:textSize="15sp" />

        <Button
            android:id="@+id/dialog_right_btn"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:background="@mipmap/dialog_btn"
            android:text="不开启"
            android:textColor="#ffffff"
            android:textSize="15sp" />

    </LinearLayout>
</LinearLayout>

然后是样式文件，主要用来设置dialog无title和window背景透明。

<resources>
    <style name="custom_dialog" parent="@android:style/Theme.Dialog">
        <item name="android:windowFrame">@null</item><!--边框-->
        <item name="android:windowIsFloating">true</item><!--是否浮现在activity之上-->
        <item name="android:windowIsTranslucent">false</item><!--半透明-->
        <item name="android:windowNoTitle">true</item><!--无标题-->
        <item name="android:windowBackground">@color/transparent</item><!--背景透明-->
        <item name="android:backgroundDimEnabled">true</item><!--模糊-->
    </style>
</resources>

CustomDialog.java

package com.sy.mydialog;

import android.app.Dialog;
import android.content.Context;
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.Display;
import android.view.Gravity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.TextView;

/**
 * Created by SY on 2016/5/10.
 */
public class CustomDialog extends Dialog {

    Context context;

    public CustomDialog(Context context, int themeResId) {
        super(context, themeResId);
        this.context =context;
    }

    public CustomDialog(Context context) {
        super(context);
        this.context =context;
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        //设置dialog周围不可点击，返回键失效
        this.setCancelable(false);
        //设置dialog在窗体中的大小和位置
        Window dialogWindow = getWindow();
        WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
        Display display = wm.getDefaultDisplay();
        WindowManager.LayoutParams params = getWindow().getAttributes();
        params.gravity= Gravity.CENTER;
        params.height = (int) (display.getHeight() * 0.25);
        params.width = (int) (display.getWidth() * 0.8);
        dialogWindow.setAttributes(params);

        super.onCreate(savedInstanceState);
    }

    public static class Builder {
        private Context context;
        private String message;
        private String positiveButtonText;
        private String negativeButtonText;
        private View contentView;
        private OnClickListener positiveButtonClickListener;
        private OnClickListener 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 setContentView(View v) {
            this.contentView = v;
            return this;
        }

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

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

        public Builder setNegativeButton(int negativeButtonText,
                                         OnClickListener listener) {
            this.negativeButtonText = (String) context
                    .getText(negativeButtonText);
            this.negativeButtonClickListener = listener;
            return this;
        }

        public Builder setNegativeButton(String negativeButtonText,
                                         OnClickListener listener) {
            this.negativeButtonText = negativeButtonText;
            this.negativeButtonClickListener = listener;
            return this;
        }

        public CustomDialog create() {
            LayoutInflater inflater = (LayoutInflater) context
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            //实例化dialog并设置样式
            final CustomDialog dialog = new CustomDialog(context,R.style.custom_dialog);

            View layout = inflater.inflate(R.layout.theme_dialog, null);
            dialog.addContentView(layout, new ViewGroup.LayoutParams(
                    ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT));
            // 设置确定按钮
            if (positiveButtonText != null) {
                ((Button) layout.findViewById(R.id.dialog_left_btn))
                        .setText(positiveButtonText);
                if (positiveButtonClickListener != null) {
                    ((Button) layout.findViewById(R.id.dialog_left_btn))
                            .setOnClickListener(new View.OnClickListener() {
                                public void onClick(View v) {
                                    positiveButtonClickListener.onClick(dialog,
                                            DialogInterface.BUTTON_POSITIVE);
                                }
                            });
                }
            } else {
                layout.findViewById(R.id.dialog_left_btn).setVisibility(
                        View.GONE);
            }
            //设置取消按钮
            if (negativeButtonText != null) {
                ((Button) layout.findViewById(R.id.dialog_right_btn))
                        .setText(negativeButtonText);
                if (negativeButtonClickListener != null) {
                    ((Button) layout.findViewById(R.id.dialog_right_btn))
                            .setOnClickListener(new View.OnClickListener() {
                                public void onClick(View v) {
                                    negativeButtonClickListener.onClick(dialog,
                                            DialogInterface.BUTTON_NEGATIVE);
                                }
                            });
                }
            } else {
                layout.findViewById(R.id.dialog_right_btn).setVisibility(
                        View.GONE);
            }
            //设置内容textview
            if (message != null) {
                ((TextView) layout.findViewById(R.id.dialog_message)).setText(message);
            } else if (contentView != null) {
                //设置内容布局
                ((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;
        }
    }
}

具体使用：

        CustomDialog.Builder  builder = new CustomDialog.Builder(MainActivity.this);
        builder.setMessage("我是自定义dialog的内容");
        builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                //do something
                Toast.makeText(getApplicationContext(),"点击了确定",Toast.LENGTH_SHORT).show();
                dialog.dismiss();

            }
        });
        builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                Toast.makeText(getApplicationContext(), "点击了取消", Toast.LENGTH_SHORT).show();
                dialog.dismiss();
            }
        });
        //创建并show
        builder.create().show();