AndroidLinearLayout布局 实现十二生肖的跳转

概述1，编写activity_main.xml代码<?xmlversion="1.0"encoding="utf-8"?><LinearLayoutxmlns:android="http://schemas.android.com/apkes/android"xmlns:app="http://schemas.android.com/apkes-auto"xmlns:too

1，编写activity_main.xml 代码

<?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="match_parent"    androID:orIEntation="vertical"    tools:context=".MainActivity">    <TextVIEw        androID:layout_wIDth="wrap_content"        androID:layout_height="wrap_content"        androID:text="选择您的生肖："        androID:layout_margintop="15dp"        androID:textSize="50sp"        />    <Spinner        androID:ID="@+ID/sp"        androID:layout_wIDth="350dp"        androID:layout_height="50dp"        androID:layout_gravity="center_horizontal"        androID:layout_margintop="30dp"        />    <button        androID:ID="@+ID/enter"        androID:layout_wIDth="wrap_content"        androID:layout_height="wrap_content"        androID:layout_gravity="center_horizontal"        androID:layout_margintop="50dp"        androID:text="确定"        /></linearLayout>

2,编写 activity_second.xml 代码

<?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="match_parent"    androID:orIEntation="vertical"    tools:context=".SecondActivity">    <ImageVIEw        androID:ID="@+ID/img"        androID:layout_wIDth="wrap_content"        androID:layout_height="wrap_content"        androID:layout_gravity="center_horizontal"        androID:layout_margintop="40dp"        />    <TextVIEw        androID:ID="@+ID/text"        androID:layout_wIDth="wrap_content"        androID:layout_height="wrap_content"        androID:layout_gravity="center_horizontal"        androID:textSize="30sp"        androID:layout_margintop="20dp"        />    <button        androID:ID="@+ID/btn"        androID:layout_wIDth="wrap_content"        androID:layout_height="wrap_content"        androID:layout_gravity="center_horizontal"        androID:layout_margintop="300dp"        androID:layout_marginleft="100dp"        androID:text="返回"/></linearLayout>

3,导入图片

4,编写 MainActivity 类

package com.example.chinesezodiac;import androIDx.appcompat.app.AppCompatActivity;import androID.content.Intent;import androID.os.Bundle;import androID.util.Log;import androID.vIEw.VIEw;import androID.Widget.ArrayAdapter;import androID.Widget.button;import androID.Widget.Spinner;public class MainActivity extends AppCompatActivity {    private Spinner sp;    private String[] data ={"鼠","牛","虎","兔","龙","蛇","马","羊","猴","鸡","狗","猪"};    private ArrayAdapter<String> adapter;    private button enterBth;    @OverrIDe    protected voID onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentVIEw(R.layout.activity_main);        sp = (Spinner)findVIEwByID(R.ID.sp);        enterBth  = (button)findVIEwByID(R.ID.enter) ;        adapter = new ArrayAdapter<String>(this, androID.R.layout.simple_spinner_item,data);        adapter.setDropDownVIEwResource(androID.R.layout.simple_spinner_dropdown_item);        sp.setAdapter(adapter);        enterBth.setonClickListener(new VIEw.OnClickListener() {            @OverrIDe            public voID onClick(VIEw v) {                int index = sp.getSelectedItemposition();                Log.d("Chinesezodiac","选中的生肖是"+index+data[index]);//                跳转                Intent intent = new Intent(MainActivity.this,SecondActivity.class);//                 int                intent.putExtra("Chines",index);//                完成数据 传递                startActivity(intent);//                结束//                MainActivity.this.finish();            }        });    }}

5，编写 SecondActivity 类

package com.example.chinesezodiac;import androIDx.appcompat.app.AppCompatActivity;import androID.content.Intent;import androID.os.Bundle;import androID.vIEw.VIEw;import androID.Widget.button;import androID.Widget.ImageVIEw;import androID.Widget.TextVIEw;import androID.Widget.Toast;public class SecondActivity extends AppCompatActivity implements VIEw.OnClickListener {    private int index;    private ImageVIEw imageVIEw;    private TextVIEw textVIEw;    private String[] data = {"鼠", "牛", "虎", "兔", "龙", "蛇", "马", "羊", "猴", "鸡", "狗", "猪"};    private int[] imgData = {R.drawable.shu, R.drawable.niu, R.drawable.hu, R.drawable.tu, R.drawable.long1, R.drawable.she, R.drawable.ma, R.drawable.yang, R.drawable.hou, R.drawable.ji, R.drawable.gou, R.drawable.hjz,};    private button button;    @OverrIDe    protected voID onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentVIEw(R.layout.activity_second);//        实例化        imageVIEw = (ImageVIEw) findVIEwByID(R.ID.img);        textVIEw = (TextVIEw) findVIEwByID(R.ID.text);        button = (button) findVIEwByID(R.ID.btn);//        得到 intent        Intent intent = getIntent();//        传值；默认为0        index = intent.getIntExtra("Chines", 0);//        获取 文本        textVIEw.setText(data[index]);//        获取 图片        imageVIEw.setimageResource(imgData[index]);//        点击返回事件        button.setonClickListener(this);    }    @OverrIDe    public voID onClick(VIEw v) {        //        根据ID 判断 用户当前点的是那个按钮；        switch (v.getID()) {            case R.ID.btn://                跳转                Intent intent = new Intent(SecondActivity.this, MainActivity.class);//                intent.putExtra()                startActivity(intent);                break;        }    }}

6,项目路径

7，运行结果截图

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