基础框架搭建(一)

来源：互联网发布：qq阅读网络异常怎么办编辑：程序博客网时间：2024/05/30 12:30

启动页面

1.启动页面代码:

public class SplashActivity extends Activity {    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        this.requestWindowFeature(Window.FEATURE_NO_TITLE);        setContentView(R.layout.activity_splash);          //两秒后延迟进入主界面        new Handler().postDelayed(new Runnable() {            @Override            public void run() {                startActivity(new Intent(SplashActivity.this,MainActivity.class));                finish();            }        },2000);    }}

2_启动页面布局文件

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:id="@+id/activity_main"    android:layout_width="match_parent"    android:layout_height="match_parent">    <LinearLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_centerInParent="true"        android:orientation="vertical">        <ImageView            android:id="@+id/logo"            android:layout_width="72dp"            android:layout_height="72dp"            android:layout_centerInParent="true"            android:layout_gravity="center"            android:focusable="true"            android:src="@drawable/logo" />        <TextView            android:layout_width="wrap_content"            android:layout_height="match_parent"            android:layout_gravity="center_horizontal"            android:text="欢迎你"            android:textColor="#eb2b84"            android:textSize="18sp" />    </LinearLayout></RelativeLayout>

主页面

1_主页面布局文件

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical">    <FrameLayout        android:id="@+id/frameLayout"        android:layout_width="match_parent"        android:layout_height="0dp"        android:layout_weight="1" />    <RadioGroup        android:id="@+id/rg_main"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:layout_alignParentBottom="true"        android:background="@drawable/home_bottom_parent_bg"        android:orientation="horizontal">    <RadioButton        android:id="@+id/rb_home"        style="@style/MainButtonStyle"        android:drawableTop="@drawable/home_button_selector"        android:text="首页" />    <RadioButton        android:id="@+id/rb_type"        style="@style/MainButtonStyle"        android:drawableTop="@drawable/type_button_selector"        android:text="分类" />    <RadioButton        android:id="@+id/rb_community"        style="@style/MainButtonStyle"        android:drawableTop="@drawable/community_button_selector"        android:paddingTop="10dp"        android:text="发现" />    <RadioButton        android:id="@+id/rb_cart"        style="@style/MainButtonStyle"        android:drawableTop="@drawable/cart_button_selector"        android:text="购物车" />    <RadioButton        android:id="@+id/rb_user"        style="@style/MainButtonStyle"        android:drawableTop="@drawable/user_button_selector"        android:text="个人中心" />    </RadioGroup></LinearLayout>

02_按钮样式

<style name="MainButtonStyle">    <item name="android:layout_width">0dp</item>    <item name="android:layout_height">wrap_content</item>    <item name="android:layout_weight">1</item>    <item name="android:textColor">@drawable/bottom_button_text_selector</item>    <item name="android:button">@null</item>    <item name="android:gravity">center</item></style>

03_设置按钮选择器

2_使用 Butterknife 初始化布局

01_配置快捷键

1）在 Setting->Plugins 中输入 butterknife 添加插件

2）Android ButterKnife Aelezny ->点击安装

02_Module 里的 build.gradle 里面添加

compile 'com.jakewharton:butterknife:8.0.1'

03_在 MainActivity 中使用

@Bind(R.id.frameLayout)FrameLayout frameLayout;@Bind(R.id.rb_home)RadioButton rbHome;@Bind(R.id.rb_type)RadioButton rbType;@Bind(R.id.rb_community)RadioButton rbCommunity;@Bind(R.id.rb_cart)RadioButton rbCart;@Bind(R.id.rb_user)RadioButton rbUser;@Bind(R.id.rg_main)RadioGroup rgMain;

2_Fragment 的基类和各个子 Fragment

public abstract class BaseFragment extends Fragment{    public Context mContext;    @Override    public void onCreate(@Nullable Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        mContext=getActivity();    }    @Nullable    @Override    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {        return initView();    }    public abstract View initView();    @Override    public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {        initData();        super.onViewCreated(view, savedInstanceState);    }    public  void initData(){    }}

02_各个子 Fragment 创建

首页：HomeFragment

分类：TypeFragment

发现：CommunityFragment

购物车：ShoppingCartFragment

用户中心：UserFragemnt

其中某个页面的内容如下:

public class UserFragment extends BaseFragment {    private static final String TAG =            UserFragment.class.getSimpleName();    private TextView textView;    @Override    public View initView() {        Log.e(TAG,"用户中心视图被初始化了");        textView = new TextView(mContext);        textView.setGravity(Gravity.CENTER);        textView.setTextSize(25);        textView.setTextColor(Color.RED);        return textView;    }    @Override    public void initData() {        super.initData();        Log.e(TAG,"用户中心数据被初始化了");        textView.setText("用户中心");    }}

3_初始化各个 Fragment 并且切换

01_初始化各个 Fragment

记得在 onCreate 地方调用

private void initFrament() {    fragments=new ArrayList<>();    fragments.add(new HomeFragment());    fragments.add(new TypeFragment());    fragments.add(new CommunityFragment());    fragments.add(new ShoppingCartFragment());    fragments.add(new UserFragment());}

@Overrideprotected void onCreate(@Nullable Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_main);    ButterKnife.bind(this);    initFrament();    initListener();}

02_各个 Fragment 的切换

private void initListener() {    rgMain.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {        @Override        public void onCheckedChanged(RadioGroup group, @IdRes int checkedId) {            switch (checkedId){                case R.id.rb_home:                   position=0;                    break;                case R.id.rb_type:                    position=1;                    break;                case R.id.rb_community:                    position=2;                    break;                case R.id.rb_cart:                    position=3;                    break;                case R.id.rb_user:                    position=4;                    break;            }            BaseFragment baseFragment = getFragment(position);            switchFragment(tempFragemnt, baseFragment);        }    });    rgMain.check(R.id.rb_home);}

根据位置得到对应的 Fragment

private BaseFragment getFragment(int position) { if(fragments!=null&&fragments.size()>0){     BaseFragment baseFragment = fragments.get(position);     return baseFragment; } return null;}

切换fragment

private void switchFragment(BaseFragment fromFragment, BaseFragment nextFragment) {    if(tempFragemnt!=nextFragment){        tempFragemnt=nextFragment;        if(nextFragment!=null){            FragmentTransaction ft=getSupportFragmentManager().beginTransaction();            if(!nextFragment.isAdded()){                if(fromFragment!=null){                    ft.hide(fromFragment);                }                    ft.add(R.id.frameLayout,nextFragment).commit();            }else{                if(fromFragment!=null){                    ft.hide(fromFragment);                }                ft.show(nextFragment).commit();            }        }    }}

阅读全文

0 0