Android自定义对话框Dialog的简单实现

<!--自定义Dialog背景全透明无边框theme--> <style name="MyDialog" parent="android:style/Theme.Dialog">  <!--背景颜色和透明程度-->  <item name="android:windowBackground">@android:color/transparent</item>  <!--是否去除标题-->  <item name="android:windowNoTitle">true</item>  <!--是否去除边框-->  <item name="android:windowFrame">@null</item>  <!--是否浮现在activity之上-->  <item name="android:windowIsFloating">true</item>  <!--是否模糊-->  <item name="android:backgroundDimEnabled">false</item> </style>

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:background="#11ffffff"><LinearLayout android:layout_width="260dp" android:layout_height="wrap_content" android:layout_centerInParent="true" android:background="@drawable/free_dialog_bg" android:orientation="vertical"><TextView android:id="@+id/title" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_gravity="center" android:text="警告！！！" android:textColor="#38ADFF" android:textSize="16sp"/> <TextView  android:id="@+id/message"  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:layout_marginLeft="20dp"  android:layout_marginRight="20dp"  android:layout_gravity="center"  android:text="您的手机马上自爆"/> <View  android:layout_width="match_parent"  android:layout_height="1px"  android:layout_marginTop="15dp"  android:background="#E4E4E4"/> <LinearLayout  android:layout_width="match_parent"  android:layout_height="40dp"  android:orientation="horizontal">  <Button   android:id="@+id/no"   android:layout_width="0dp"   android:layout_height="match_parent"   android:layout_weight="1"   android:layout_marginLeft="10dp"   android:background="@null"   android:gravity="center"   android:lines="1"   android:text="取消"   android:textColor="#7D7D7D"   android:textSize="16sp"/>  <View   android:layout_width="1px"   android:layout_height="match_parent"   android:background="#E4E4E4"/>  <Button   android:id="@+id/yes"   android:layout_width="0dp"   android:layout_height="match_parent"   android:layout_weight="1"   android:layout_marginRight="10dp"   android:background="@null"   android:gravity="center"   android:lines="1"   android:text="确定"   android:textColor="#38ADFF"   android:textSize="16sp"/> </LinearLayout></LinearLayout></RelativeLayout>

<?xml version="1.0" encoding="utf-8"?><shape xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent"> <solid android:color="#ffffff" /> <stroke  android:width="0.8dp"  android:color="#ffffff" /> <!-- 圆角 --> <corners android:radius="6dp" /></shape>

package com.syah.mydialog;import android.app.Dialog;import android.content.Context;import android.os.Bundle;import android.support.annotation.NonNull;import android.support.annotation.StyleRes;import android.view.View;import android.widget.Button;import android.widget.TextView;/** * 创建自定义的Dialog，主要学习实现原理 * Created by admin on 2017/8/30. */public class MyDialog extends Dialog { private Button yes;//确定按钮 private Button no;//取消按钮 private TextView titleTV;//消息标题文本 private TextView message;//消息提示文本 private String titleStr;//从外界设置的title文本 private String messageStr;//从外界设置的消息文本 //确定文本和取消文本的显示的内容 private String yesStr, noStr; private onNoOnclickListener noOnclickListener;//取消按钮被点击了的监听器 private onYesOnclickListener yesOnclickListener;//确定按钮被点击了的监听器 public MyDialog(@NonNull Context context, @StyleRes int themeResId) {  super(context, themeResId); } /**  * 设置取消按钮的显示内容和监听  *  * @param str  * @param onNoOnclickListener  */ public void setNoOnclickListener(String str, onNoOnclickListener onNoOnclickListener) {  if (str != null) {   noStr = str;  }  this.noOnclickListener = onNoOnclickListener; } /**  * 设置确定按钮的显示内容和监听  *  * @param str  * @param yesOnclickListener  */ public void setYesOnclickListener(String str, onYesOnclickListener yesOnclickListener) {  if (str != null) {   yesStr = str;  }  this.yesOnclickListener = yesOnclickListener; } @Override protected void onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);  setContentView(R.layout.dialog);  //空白处不能取消动画  setCanceledOnTouchOutside(false);  //初始化界面控件  initView();  //初始化界面数据  initData();  //初始化界面控件的事件  initEvent(); } /**  * 初始化界面控件  */ private void initView() {  yes = findViewById(R.id.yes);  no = findViewById(R.id.no);  titleTV = (TextView) findViewById(R.id.title);  message = (TextView) findViewById(R.id.message); } /**  * 初始化界面控件的显示数据  */ private void initData() {  //如果用户自定了title和message  if (titleStr != null) {   titleTV.setText(titleStr);  }  if (messageStr != null) {   message.setText(messageStr);  }  //如果设置按钮文字  if (yesStr != null) {   yes.setText(yesStr);  }  if (noStr != null) {   no.setText(noStr);  } } /**  * 初始化界面的确定和取消监听  */ private void initEvent() {  //设置确定按钮被点击后，向外界提供监听  yes.setOnClickListener(new View.OnClickListener() {   @Override   public void onClick(View v) {    if (yesOnclickListener != null) {     yesOnclickListener.onYesOnclick();    }   }  });  //设置取消按钮被点击后，向外界提供监听  no.setOnClickListener(new View.OnClickListener() {   @Override   public void onClick(View v) {    if (noOnclickListener != null) {     noOnclickListener.onNoClick();    }   }  }); } /**  * 从外界Activity为Dialog设置标题  *  * @param title  */ public void setTitle(String title) {  titleStr = title; } /**  * 从外界Activity为Dialog设置message  *  * @param message  */ public void setMessage(String message) {  messageStr = message; } public interface onNoOnclickListener {  public void onNoClick(); } public interface onYesOnclickListener {  public void onYesOnclick(); }}

<?xml version="1.0" encoding="utf-8"?><android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context="com.syah.mydialog.MainActivity"> <Button  android:id="@+id/btn"  android:layout_width="wrap_content"  android:layout_height="wrap_content"  android:text="自定义dialog"  app:layout_constraintBottom_toBottomOf="parent"  app:layout_constraintLeft_toLeftOf="parent"  app:layout_constraintRight_toRightOf="parent"  app:layout_constraintTop_toTopOf="parent" /></android.support.constraint.ConstraintLayout>

package com.syah.mydialog;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.View;import android.view.Window;import android.widget.Button;import android.widget.Toast;public class MainActivity extends AppCompatActivity { private MyDialog myDialog; private Button button; @Override protected void onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);  requestWindowFeature(Window.FEATURE_NO_TITLE);  setContentView(R.layout.activity_main);  button = (Button) findViewById(R.id.btn);  button.setOnClickListener(new View.OnClickListener() {   @Override   public void onClick(View view) {    myDialog=new MyDialog(MainActivity.this,R.style.MyDialog);    myDialog.setTitle("警告！");    myDialog.setMessage("警告：您的手机3秒钟内自爆");    myDialog.setYesOnclickListener("确定", new MyDialog.onYesOnclickListener() {     @Override     public void onYesOnclick() {      Toast.makeText(getApplicationContext(),"拜拜，我们来生见",Toast.LENGTH_LONG).show();      myDialog.dismiss();     }    });    myDialog.setNoOnclickListener("取消", new MyDialog.onNoOnclickListener() {     @Override     public void onNoClick() {      Toast.makeText(getApplicationContext(),"明智的选择",Toast.LENGTH_LONG).show();      myDialog.dismiss();     }    });    myDialog.show();   }  }); }}

/**  * 从外界Activity为Dialog设置标题  *  * @param title  */ public void setTitle(String title) {  titleStr = title; } /**  * 从外界Activity为Dialog设置message  *  * @param message  */ public void setMessage(String message) {  messageStr = message; }

myDialog=new MyDialog(MainActivity.this);myDialog.setTitle("警告！");myDialog.setMessage("警告：您的手机3秒钟内自爆");

public MyDialog(@NonNull Context context, @StyleRes int themeResId) {  super(context, themeResId);  }

myDialog=new MyDialog(MainActivity.this,R.style.MyDialog);

/**  * 确定按钮接口  */ public interface onNoOnclickListener {  public void onNoClick(); } /**  * 取消按钮接口  */ public interface onYesOnclickListener {  public void onYesOnclick(); }

private onNoOnclickListener noOnclickListener;//取消按钮被点击了的监听器 private onYesOnclickListener yesOnclickListener;//确定按钮被点击了的监听器 /**  * 设置取消按钮的显示内容和监听  *  * @param str  * @param onNoOnclickListener  */ public void setNoOnclickListener(String str, onNoOnclickListener onNoOnclickListener) {  if (str != null) {   noStr = str;  }  this.noOnclickListener = onNoOnclickListener; } /**  * 设置确定按钮的显示内容和监听  *  * @param str  * @param yesOnclickListener  */ public void setYesOnclickListener(String str, onYesOnclickListener yesOnclickListener) {  if (str != null) {   yesStr = str;  }  this.yesOnclickListener = yesOnclickListener; }

//设置确定按钮被点击后，向外界提供监听  yes.setOnClickListener(new View.OnClickListener() {   @Override   public void onClick(View v) {    if (yesOnclickListener != null) {     yesOnclickListener.onYesOnclick();    }   }  });  //设置取消按钮被点击后，向外界提供监听  no.setOnClickListener(new View.OnClickListener() {   @Override   public void onClick(View v) {    if (noOnclickListener != null) {     noOnclickListener.onNoClick();    }   }  });

myDialog.setYesOnclickListener("确定", new MyDialog.onYesOnclickListener() {     @Override     public void onYesOnclick() {      Toast.makeText(getApplicationContext(),"拜拜，我们来生见",Toast.LENGTH_LONG).show();      myDialog.dismiss();     }    });    myDialog.setNoOnclickListener("取消", new MyDialog.onNoOnclickListener() {     @Override     public void onNoClick() {      Toast.makeText(getApplicationContext(),"明智的选择",Toast.LENGTH_LONG).show();      myDialog.dismiss();     }    });