安卓作业-34-贾开芹

 安卓作业之跑马灯

一、上网查资料有关此问题的解决方案

二、着手开始写代码：

xml:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/activity_flower"
    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"
    android:orientation="vertical"
    tools:context="com.example.jkq.myapplication.MainActivity">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:textColor="@android:color/holo_green_dark"
        android:layout_gravity="center"
        android:scrollHorizontally="true"
        android:scrollbars="horizontal"
        android:text="喜欢哪朵花就点吧"
        android:singleLine="true"
        android:ellipsize="marquee"
        android:focusableInTouchMode="true"
        android:focusable="true"
        android:marqueeRepeatLimit="marquee_forever"
        android:textSize="60sp"
        android:id="@+id/timu"   />

    <ImageView
        android:layout_marginTop="40dp"
        android:layout_width="230dp"
        android:layout_height="160dp"
        android:layout_gravity="center"
        android:id="@+id/picture"/>

    <RadioGroup
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginTop="20dp"
        android:orientation="vertical"
        android:id="@+id/zhonglei">

        <RadioGroup
            android:layout_marginTop="60dp"
            android:id="@+id/rg_rg1"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:gravity="center"
            android:orientation="horizontal"
            >

            <RadioButton
                android:id="@+id/laba"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textSize="22sp"
                android:layout_marginRight="@dimen/activity_vertical_margin"
                android:checked="true"
                android:text="喇叭花"/>

            <RadioButton
                android:id="@+id/guang"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textSize="22sp"
                android:text="广玉兰"/>
            <RadioButton
                android:id="@+id/ying"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textSize="20sp"
                android:text="樱花"/>
        </RadioGroup>
        <RadioGroup
            android:layout_marginTop="60dp"
            android:id="@+id/rg_rg2"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:gravity="center"
            android:orientation="horizontal"
            >
            <RadioButton
                android:id="@+id/mudan"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textSize="22sp"
                android:text="牡丹花"/>
            <RadioButton
                android:id="@+id/meigui"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textSize="22sp"
                android:text="玫瑰花"/>
            <RadioButton
                android:id="@+id/baihe"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:textSize="22sp"
                android:text="百合花"/>
        </RadioGroup>
    </RadioGroup>

</LinearLayout>

 

 

JAVA：

package com.example.jkq.myapplication;

import android.support.v7.app.AppCompatActivity;
        import android.os.Bundle;
        import android.widget.ImageView;
        import android.widget.RadioButton;
        import android.widget.RadioGroup;
        import android.widget.TextView;

public class MainActivity extends AppCompatActivity {
    private TextView timu;
    private ImageView picture;
    private RadioGroup rg_rg1;
    private RadioGroup zhonglei;
    private RadioButton laba;
    private  RadioButton guang;
    private  RadioButton ying;
    private  RadioGroup  rg_rg2;
    private RadioButton mudan;
    private  RadioButton meigui;
    private  RadioButton baihe;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
       timu= (TextView) findViewById(R.id.timu);
        laba = (RadioButton) findViewById(R.id.laba);
        guang = (RadioButton) findViewById(R.id.guang);
        ying = (RadioButton) findViewById(R.id.ying);
        mudan = (RadioButton) findViewById(R.id.mudan);
        meigui = (RadioButton) findViewById(R.id.meigui);
        baihe= (RadioButton) findViewById(R.id.baihe);
        rg_rg1 = (RadioGroup) findViewById(R.id.rg_rg1);
        rg_rg2 = (RadioGroup) findViewById(R.id.rg_rg2);
        zhonglei = (RadioGroup) findViewById(R.id.zhonglei);
        picture=(ImageView)findViewById(R.id.picture);
        rg_rg1.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(RadioGroup radioGroup, int i) {
                if(laba.isChecked()){
                    picture.setImageResource(R.drawable.喇叭花);
                    rg_rg2.clearCheck();
                }
                if(guang.isChecked()){
                    picture.setImageResource(R.drawable.广玉兰);
                    rg_rg2.clearCheck();
                }
                if(ying.isChecked()){
                   picture.setImageResource(R.drawable.樱花);
                    rg_rg2.clearCheck();
                }

            }
        });
        rg_rg2.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(RadioGroup radioGroup, int i) {
                if(mudan.isChecked()){
                    picture.setImageResource(R.drawable.牡丹花);
                    rg_rg1.clearCheck();
                }
                if(meigui.isChecked()){
                   picture.setImageResource(R.drawable.玫瑰花);
                    rg_rg1.clearCheck();
                }
                if(baihe.isChecked()){
                   picture.setImageResource(R.drawable.百合花);
                    rg_rg1.clearCheck();
                }

            }
        });

    }
}

期间遇到一个很大的问题，就是运行的时候会只跳出来图片

三、运行的结果如下图所示：

然后第二个作业实在在我的能力范围之外