Android对话框

来源：互联网发布：ec20 linux驱动编辑：程序博客网时间：2024/05/12 13:06

使用Activity中的onCreateDialog()方法写一个对话框

先写布局文件

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="match_parent"android:layout_height="match_parent"android:paddingBottom="@dimen/activity_vertical_margin"android:paddingLeft="@dimen/activity_horizontal_margin"android:paddingRight="@dimen/activity_horizontal_margin"android:paddingTop="@dimen/activity_vertical_margin"tools:context="com.dada.cxl.createdialogtest.MainActivity"><Button    android:id="@+id/btn_dialog"    android:text="show dialog"    android:layout_width="match_parent"    android:layout_height="wrap_content" /></RelativeLayout>

java文件编写的代码

package com.dada.cxl.createdialogtest;import android.app.Activity;import android.app.AlertDialog;import android.app.Dialog;import android.content.DialogInterface;import android.os.Bundle;import android.support.v7.app.AppCompatActivity;import android.view.View;import android.widget.Button;import android.widget.Toast;public class MainActivity extends Activity {    private Button btn_dialog;    CharSequence[] items = {"Goocle","Apple","Microsoft"};    boolean[] itemsChecked = new boolean[items.length];    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        btn_dialog = (Button) findViewById(R.id.btn_dialog);        btn_dialog.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                showDialog(0);            }        });    }    @Override    protected Dialog onCreateDialog(int id) {        switch(id){            case 0:                return new AlertDialog.Builder(this).setIcon(R.mipmap.ic_launcher)                        .setTitle("this is a dialog with some simple text...")                        .setPositiveButton("OK", new DialogInterface.OnClickListener() {                            @Override                            public void onClick(DialogInterface dialog, int which) {                                Toast.makeText(MainActivity.this,"ok clicked!",Toast.LENGTH_SHORT).show();                            }                        })                        .setNegativeButton("Cancel", new DialogInterface.OnClickListener() {                            @Override                            public void onClick(DialogInterface dialog, int which) {                                Toast.makeText(MainActivity.this,"cancel clicked!",Toast.LENGTH_SHORT).show();                            }                        })                        .setMultiChoiceItems(items, itemsChecked, new DialogInterface.OnMultiChoiceClickListener() {                            @Override                            public void onClick(DialogInterface dialog, int which, boolean isChecked) {                                Toast.makeText(MainActivity.this,items[which]+(isChecked?"checked!":"unchecked"),Toast.LENGTH_SHORT).show();                            }                        }).create();        }        return null;    }}

当然还有其他格式的Dialog，可以自己去尝试一下

0 0