iOS & Android 使用对比

添加权限

Android

在 project/app/src/main/AndroidManifest.xml 中添加

# 和 application 标签同级
<uses-permission android:name="android.permission.INTERNET"/>

<application .../>

iOS

• info.plist
• Target -> Capabilities

添加依赖

android gradle 和 iOS cocoapods 有一些类似的地方。

在 project/app/src/build.gradle （类似于podfile）中添加依赖.

dependencies {
     # 添加需要的依赖
    compile 'com.alibaba:fastjson:1.2.33'
}

重新build，gradle 会去同步,相当于 pod update。

iOS

cocoapods

图片

xml

<ImageView android:src="@"/>

class

context.getResources().getDrawable(R.mipmap.icon_order);

SDWebImage & Glide

Glide.with((Fragment) mListener).load(tag.coverImage).into(holder.mBackImageView);

contentMode & scaleType

AspectFit = CenterCrop

表格

Android

RecyclerView / ListView

早期都是使用ListView，后面有了RecyclerView，使用上大同小异。

1. 创建RecyclerView / ListView
2. 创建相应的Adapter，类似于创建一个Adapter类实现tableView的delegate/dataSource协议
3. 将Adapter和view进行关联，通过Adapter控制view的内容

更新整个表格

List list = new JSONObject().parseArray(res.data.toString(),FollowOrder.class);

dataSources.clear();
dataSources.addAll(list);

// 要注意的是adpter刷新前后dateSet必须是同一对象，否则notifyDataSetChanged无效，这个比较垃圾
mViewAdapter.notifyDataSetChanged();

iOS

UICollectionView & UITableView

UITableView始终是单列，UICollectionView可以多行多列。

数据持久化

iOS

NSUserDefault

Android

SharedPreferences

// 获取一个SharedPreferences实例，名称是NSUserDefaults，如果没有就创建，非常SB的地方是必须由context去获取
SharedPreferences userDefaults = context.getSharedPreferences("NSUserDefaults",0);

SharedPreferences.Editor editor = userDefaults.edit();

// 增加
editor.putString("name",name);
// 删
editor.remove("name");

editor.commit();

fragment

import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentTransaction;

public class MainActivity extends Activity implements LikeFragment.OnListFragmentInteractionListener {
    private FragmentManager manager;
   private FragmentTransaction transaction;
   private LikeFragment likeFragment;
    
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.activity_main);

       showFragments(likeFragment,"like");
    }
    
    void showFragments(Fragment fragment,String title) {
        
        if (likeFragment == null) {
             likeFragment = new LikeFragment();
        }
        
        manager = getSupportFragmentManager();
        transaction = manager.beginTransaction();
        transaction.replace(R.id.fragment,likeFragment,title);
        transaction.commit();
    }
}

// main_activity.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout 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:id="@+id/container"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.lingshu.wangxuefeng.morepopular.MainActivity">

    <LinearLayout
        android:id="@+id/fragment"
        android:orientation="vertical"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

    </LinearLayout>
</android.support.constraint.ConstraintLayout>

切换Activity

-------------- MainActivity.java --------------

Intent intent = new Intent(MainActivity.this,DestActivity.class);

String para = "para";

intent.putExtra("para",para);

startActivity(intent);


-------------- DestActivity.java --------------

onCreate() {
    Intent intent = getIntent();
}

NSNotification & BroadCast

发送一个广播 ，名称为 UserInfoGet

Intent intent = new Intent();
intent.setAction("UserInfoGet");
XFApplication.getContext().sendBroadcast(intent);

接收一个广播，名称为 UserInfoGet

IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction("UserInfoGet");

getActivity().registerReceiver(new BroadcastReceiver() {
    @Override
    public void onReceive(Context context, Intent intent) {
        loadData();
    }
},intentFilter);

剪贴板

Android

String text = "balabala";

ClipboardManager clipboardManager = (ClipboardManager)getSystemService(CLIPBOARD_SERVICE);
ClipData data = ClipData.newPlainText("text",text);

clipboardManager.setPrimaryClip(data);

toast("copy invitation text success");
                

iOS

UIPasteboard *pasteboard = [UIPasteboard generalPasteboard];
    
pasteboard.string = string;