Android App多视图

时间:2013-09-23 22:53:49

标签: java android

这是你会发现的最愚蠢的问题之一,但在我的Android应用程序中,我需要有一些不同的“屏幕”;一个你登录的地方,一个代表一个问题的视图(会有多个问题,所以我需要为每个问题制作一个视图,并在点击下一个按钮时将其更改为下一个视图。让我解释一下流程图:

用户打开应用 - >登录屏幕 - >用户登录 - >查看问题1的自动生成视图的更改 - >单击下一步按钮 - >问题2 - >做所有问题 - >最后的观点说你已经完成了。

我创建了两个xml布局文件,一个名为main,一个名为quiz(代表一个问题)。

我将详细说明所需的一切。

更新

以下是我的两个活动类:

package me.nrubin29.quiz.student;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

public class Main extends Activity {
    /**
     * Called when the activity is first created.
     */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        final Button done = (Button) findViewById(R.id.done);
        final EditText serverAddress = (EditText) findViewById(R.id.serverAddress);
        final EditText secretNumber = (EditText) findViewById(R.id.secretNumber);
        final EditText name = (EditText) findViewById(R.id.name);

        done.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                String addr = serverAddress.getText().toString();
                String num = secretNumber.getText().toString();
                String n = name.getText().toString();

                if (addr.equals("") || num.equals("") || n.equals("")) {
                    Toast.makeText(getApplicationContext(), "You didn't fill in all the fields.", Toast.LENGTH_LONG).show();
                    return;
                }

                new Connection().initConnection(Main.this, addr, num, n);
            }
        });
    }
}

package me.nrubin29.quiz.student;

import android.app.Activity;
import android.os.Bundle;
import android.widget.RadioButton;

public class Quiz extends Activity {

    /**
     * Called when the activity is first created.
     */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.quiz);

        final RadioButton radioButton1 = (RadioButton) findViewById(R.id.radioButton);
        final RadioButton radioButton2 = (RadioButton) findViewById(R.id.radioButton1);
        final RadioButton radioButton3 = (RadioButton) findViewById(R.id.radioButton2);
        final RadioButton radioButton4 = (RadioButton) findViewById(R.id.radioButton3);

        radioButton1.setText("Testing!");
    }
}

这是我的两个XML:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:orientation="vertical"
              android:layout_width="fill_parent"
              android:layout_height="fill_parent"
        >

    <TextView
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="Please enter the server address and secret number your teacher gives you."
            />

    <EditText
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:id="@+id/serverAddress" android:layout_gravity="center"
            android:phoneNumber="true"
            android:hint="Server Address"/>
    <EditText
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:id="@+id/secretNumber" android:layout_gravity="center"
            android:phoneNumber="true"
            android:hint="Secret Number"/>

    <Space
        android:layout_width="fill_parent"
        android:layout_height="20px"
        android:id="@+id/space1"/>

    <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Please enter your name."
            android:id="@+id/textView2" android:layout_gravity="left|center_vertical"/>
    <EditText
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:id="@+id/name" android:layout_gravity="left|center_vertical"
            android:hint="Name"/>

    <Space
        android:layout_width="fill_parent"
        android:layout_height="20px"
        android:id="@+id/space"/>

    <Button
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="Done"
            android:id="@+id/done" android:layout_gravity="center"/>
</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              android:orientation="vertical"
              android:layout_width="fill_parent"
              android:layout_height="fill_parent"
        >

    <RadioGroup
        android:layout_width="wrap_content"
        android:layout_height="fill_parent"
        android:layout_gravity="center">

        <TextView
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="Question"
            android:id="@+id/textView"/>

        <RadioButton
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="New RadioButton"
            android:id="@+id/radioButton"
            android:layout_gravity="center"/>

        <RadioButton
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="New RadioButton"
            android:id="@+id/radioButton1"/>

        <RadioButton
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="New RadioButton"
            android:id="@+id/radioButton2"/>

        <RadioButton
            android:layout_width="fill_parent"
            android:layout_height="wrap_content"
            android:text="New RadioButton"
            android:id="@+id/radioButton3"/>

    </RadioGroup>
</LinearLayout>

更新!这是我的新连接类:

package me.nrubin29.quiz.student;

import android.app.Activity;
import android.content.Intent;
import android.widget.Toast;
import me.nrubin29.quiz.student.receivedQuiz.Quiz;

import java.io.EOFException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.net.Socket;

public class Connection {

    private Connection() { }

    private static Connection instance = new Connection();

    public static Connection getInstance() {
        return instance;
    }

    private Quiz quiz;
    private Socket socket;
    private Thread reader;
    private ObjectInputStream inputStream;
    private ObjectOutputStream outputStream;

    public void initConnection(final Activity activity, final String ip, final String port, final String name) {
        new Thread(new Runnable() {
            public void run() {
                try {
                    activity.runOnUiThread(new Runnable() {
                        public void run() {
                            Toast.makeText(activity.getApplicationContext(), "Starting connection to " + ip + ":" + Integer.parseInt(port), Toast.LENGTH_SHORT).show();
                        }
                    });

                    socket = new Socket(ip, Integer.parseInt(port));

                    activity.runOnUiThread(new Runnable() {
                        public void run() {
                            Toast.makeText(activity.getApplicationContext(), "Connected!", Toast.LENGTH_SHORT).show();
                        }
                    });

                    outputStream = new ObjectOutputStream(socket.getOutputStream());

                    inputStream = new ObjectInputStream(socket.getInputStream());

                    outputStream.writeObject(name);

                    quiz = new Quiz((String) inputStream.readObject());

                    Intent i = new Intent(activity, me.nrubin29.quiz.student.Quiz.class);
                    activity.startActivity(i);

                    reader = new Thread(new Runnable() {
                        public void run() {
                            while (true) {
                                try {
                                    Object in = inputStream.readObject();
                                }
                                catch (final EOFException e) { activity.runOnUiThread(new Runnable() { public void run() { Toast.makeText(activity.getApplicationContext(), e.getMessage(), Toast.LENGTH_SHORT).show(); } }); }
                                catch (Exception e) { e.printStackTrace(); }
                            }
                        }
                    });

                    reader.start();
                }
                catch (Exception e) { e.printStackTrace(); }
            }
        }).start();
    }

    public Quiz getQuiz() {
        return this.quiz;
    }
}

As far as the Activity for Quiz, I guess I should make a constructor that takes the question and answers and sets the text of the radio buttons? Also, how exactly (code example would rock) would I create go about answering the question with the code above?

2 个答案:

答案 0 :(得分:0)

对于登录Activity,只需使用layout所需的ViewSpinnerTextViewButton,等...)。

如果问题屏幕全部相同,那么您可以根据需要使用FragmentsViewPager。这应该可以很好地满足您的需求。这样您就可以为每个问题提供新数据,但可以轻松保持相同的layout

VeiwPager Docs

ViewPager example我没有多看,但他的教程通常很不错。

如果ViewPager超出了您现在的需求,那么您只需View一个TextView来解决Button等问题,并在Intent时更改文字点击。

修改

Context更改为使用 Intent i = new Intent(activity, Quiz.class); activity.startActivity(i);

{{1}}

答案 1 :(得分:0)

您可以通过拥有两个不同的活动来实现这一点,每个活动都有不同的内容视图(XML文件)。 默认的Launcher活动将是您的登录屏幕,其中包含登录布局文件。

第二项活动应该是处理问题的观点。这可以使用您的apt视图组(如RelativeLAyout,LinearLayout,FrameLayout等)来完成。互联网上有很多例子。只需搜索每个教程。

最终视图(已完成)可以在具有不同视图的同一活动中实现,也可以仅使用AlertDialog实现。