xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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="wrap_content"
tools:context="com.example.my_dialog.MainActivity">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="onClick"
android:text="弹出对话框,设置这段文字的操作在xml里面"></Button>
</LinearLayout>
package com.example.my_dialog;
import android.content.DialogInterface;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void onClick(View view){
new AlertDialog.Builder(MainActivity.this).
setTitle("对话框").setMessage("这是一个对话框").
setPositiveButton("取消",null).
setNeutralButton("设置",null).
setNegativeButton("确定", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
Toast.makeText(MainActivity.this,"确定",Toast.LENGTH_LONG).show();
}
}).
show();
}
}
image.png
image.png
点击确定之后的情况：
image.png
