我有一个arrayadapter，我无法通过点击按钮填充我的menuscreen.xml屏幕
这是我的MainActivity 我试图设置一个按钮和onclick听众，但是无法正确设置
package com.example.vitoriano_vaz.eastbayvapes;
import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
/*
This app is for a local Vape Shop
it's purpose is to increase customer flow, and provide a menu for Android users
the array is going to be called = da_menu
*/
public class MainActivity extends AppCompatActivity {
private static Intent java;
/*
called when the user clicks the send Button
*/
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
/*
sends user to about us xml via AboutActivity.class
*/
Button button = (Button)findViewById(R.id.button);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(MainActivity.this, AboutActivity.class);
startActivity(intent);
}
});
/*
this is the button call that sends user to the menuscreen.xml
*/
Button menubutton = (Button)findViewById(R.id.menubutton);
button.setOnClickListener(new view.OnClickListener);
populateListView();
}
private void populateListView() {
// Create the list of items
String[] juiceMenu= {
"#1 BLUEBERRY BOMBSHELL \nThis blueberry dessert will keep your taste buds begging for more",
"#2 RICHIE RICH\nShout out to Rich! This was his all day vape. Strawberry cream with a bunch of deliciousness",
"#3 CHIQUITA\nCreamy Banana with a bready after taste",
"#4 AFTERNOON DELIGHT\nGot that 3 o'clock feeling? Try a little Afternoon delight. Kiwi Strawberry Dessert",
"#5 POPPIN OTTERS\nMelt an otterpop put it in your tank and vape it",
"#6 VIVA LA SANGRIA\nFruit, with a little bit of fruit, add a teaspoon of fruit mixed with white win and top it off with fruit",
"#7 OKOLE MALUNA\nPineapple fruit blend. Bottom up!",
"#8 CARMEN MIRANDA\nVanilla custard with a crisp",
"#9 POMALADE\nIt's Bombalade! Yuour mother will love it",
"#10 IZUAL\nWhirlwind of icy Fruits",
"#11 BUTTER STOTCH\nProfessor Chaos will surely get grounded for this one!",
"#12 BLUE BULLS\nGrab the bull by the horns",
"#13 GRAPE APE\nA grapple a day will keep the doctor away",
"#14 BRUCE JUICE\nPerfectly blended old fashioned. This one is for you Bruce",
"#15 DOC HOLIDAY\nN.E.T. Tabacco flavor. Limited release",
"#16 PEACHY KEEN\nPeach cobbler. Better than what your mama used to make",
"#17 HULA\nStrawberry coconut? What in the hula?",
"#18 NEW YORK\nPeppermint paddy dipped in chocolate...Amazing really",
"#19 AL GORE\nIm super duper cereal right now!",
"#20 LUX CHARMS\nHearts, stars, horseshoes, clovers & blue moons, pots of gold % rainbows & me red balloons",
"#21 SAILOR JACK\nCant go to the ball game without some cracker jacks",
"#22 GET HIM TO THE GREEK\n...Yogurt, peach, delightful",
"#23 KEY WE LIE CHI\nFruit lovers will enjoy this lychee vape",
"#24 SPRING FLING\nA menage a trois of honeydew and cream on your tongue",
"#25 GUMBY\nWatermelon sour gummy",
"#26 CHAI\nMILK and Chai Tea",
"#27 MR. BBEAN\nCappuccino with cream to start the day off right",
"#28 50 SHADES OF ORANGE\nA delightful blend of orange and cream",
"#29 BLUE WAFFLES\nBreakfast for dinner with this Blueberry Waffle",
"#30 ENIGMA\nEnigma conundrum of mango raspberry with a hint of mystery can you solve the puzzle?",
"#31 MR. FREEZE\nPut down the tank and STEP AWAY hardcore mint lovers ONLY! This juice is too coll for most",
"#32 CUP OF JOE\nThe best part of waking up is coffee in your vape",
"#33 BON JOVI\nVanilla Bourbon ",
};
// Build adapter
ArrayAdapter<String> adapter = new ArrayAdapter<String>(
this, // context for the activity
R.layout.da_menu, // Layout to create
juiceMenu); // Items to be displayed
//configure list view
ListView list = (ListView) findViewById(R.id.listViewMain);
list.setAdapter(adapter);
}
}
这是我要将用户发送到
的屏幕<?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:scrollIndicators="right">
<ListView
android:id="@+id/listViewMain"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true" />
</RelativeLayout>
具有按钮调用的activity_main.xml
<?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:src="@drawable/ebvbottle"
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.example.vitoriano_vaz.eastbayvapes.MainActivity">
<TextView
android:id="@+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="East Bay Vapes"
android:textAllCaps="true"
android:textColor="#FEFEFF"
android:textSize="28sp"
android:textStyle="bold"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true" />
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="onClick"
android:text="About Us"
android:layout_below="@+id/textView"
android:layout_alignParentStart="true" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="sendMenu"
android:text="Menu"
android:id="@+id/menubutton"
android:layout_alignTop="@+id/button"
android:layout_alignParentEnd="true" />
</RelativeLayout>
androidmaifest 如果它是相关的 在创建新的SecondActivity.java类后更新了android清单
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.vitoriano_vaz.eastbayvapes">
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".AboutActivity"
android:screenOrientation="portrait"/>
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<activity android:name=".SecondActivity"/>
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
da_menu.xml我使用它发送到android：id =＆＃34; @ + id / listViewMain＆＃34;
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
</TextView>
答案 0 :(得分：0)
这样做：
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
populateListView();
}
});
答案 1 :(得分：0)
你有2个屏幕 - 所以你需要2 Activity s。
您需要ArrayAdapter一秒Activity，例如“SecondActivity.java”
然后这样做：
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent secondActivityIntent = new Intent(this, SecondActivity.class);
startActivity(secondActivity);
}
});
您还需要删除mainactivity.xml中按钮的“onClick”属性。它将尝试调用Activity中名为“onClick（View view）”的方法，这是您不想要的。
您应该查看有关启动Activity：http://developer.android.com/intl/es/training/basics/firstapp/starting-activity.html
编辑：
方法populateListView()应位于此SecondActivity中 - 您将填充并显示它。
答案 2 :(得分：0)
将意图传递给按钮点击列表器，并填写您希望在点击列表器上显示的屏幕。
答案 3 :(得分：0)
我认为你的问题是你在写
Button menubutton = (Button)findViewById(R.id.menubutton);
button.setOnClickListener(new view.OnClickListener);
将其替换为：
menubutton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
populateListView();
}
});