八、AlertDialog
AlertDialog.Builder builder = new AlertDialog.Builder(context); //构建Dialog的各种参数
Builder.setlcon(int iconld); //添加ICON
Builder.setTitle(CharSequence title); //添加标题
Builder.setMessage(CharSequence message); //添加消息
Builder.setView(View view); //设置自定义布局
Builder.creat(); //创建
DialogBuilder.show(); //显示对话框
setPositiveButton //确定按钮
setNegativeButton //取消按钮
setNeutralButton //中间按钮
源码设置
1.ui页面
<?xml version="1.0" encoding="utf-8"?> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" xmlns:android="http://schemas.android.com/apk/res/android"> <Button android:text="显示对话框" android:textSize="30sp" android:onClick="BtnClink" android:layout_width="200dp" android:layout_height="150dp"/> </LinearLayout>
2.自定义布局页面
<?xml version="1.0" encoding="utf-8"?> <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="horizontal" android:background="#ff00ff00" xmlns:android="http://schemas.android.com/apk/res/android"> <ImageView android:src="@mipmap/ic_launcher" android:layout_width="wrap_content" android:layout_height="wrap_content"/> <TextView android:text="测试,天气很好" android:layout_width="wrap_content" android:layout_height="wrap_content"/> </LinearLayout>
3.后台代码
package com.example.alertdialog; import androidx.appcompat.app.AlertDialog; import androidx.appcompat.app.AppCompatActivity; import android.content.DialogInterface; import android.os.Bundle; import android.util.Log; import android.view.View; public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); } /** * 显示对话框 * */ public void BtnClink(View view) { //加载布局并转换成View View view1 = getLayoutInflater().inflate(R.layout.dialog_view,null); AlertDialog.Builder builder=new AlertDialog.Builder(this); builder.setIcon(R.mipmap.ic_launcher) //设置图标 .setTitle("标题") //设置标题 .setMessage("文本提示信息") //提示内容 .setView(view1) //设置自定义布局 .setPositiveButton("确认", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialogInterface, int i) { Log.e("leo", "onClick:点击了确认按钮 "); } }) .setNegativeButton("取消", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialogInterface, int i) { Log.e("leo", "onClick:点击了取消按钮 "); } }) .setNeutralButton("中间", new DialogInterface.OnClickListener() { @Override public void onClick(DialogInterface dialogInterface, int i) { Log.e("leo", "onClick:点击了中间按钮 "); } }) .create() //创建 .show(); //展示 } }
4.效果图