AutoLayout

XML

<?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"
    tools:context=".MainActivity"
    android:orientation="vertical">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

        <TextView
            android:layout_width="400px"
            android:layout_height="wrap_content"
            android:text="测试1"
            android:background="@color/colorAccent"/>

        <TextView
            android:layout_width="400px"
            android:layout_height="wrap_content"
            android:text="测试1"
            android:background="@color/colorPrimary"/>

    </LinearLayout>

    <ListView
        android:id="@+id/listView"
        android:layout_width="800px"
        android:layout_height="match_parent">

    </ListView>

</LinearLayout>

MainActivity

public class MainActivity extends AppCompatActivity {

    private ListView listView;
    private List<JsonBean.DataBean> data = new ArrayList<>();
    private static final String TAG = "MainActivity";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        listView = findViewById(R.id.listView);

        new Thread(new Runnable() {
            @Override
            public void run() {
                OkGo.<String>get("http://www.qubaobei.com/ios/cf/dish_list.php?stage_id=1&limit=10&page=1").execute(new StringCallback() {
                    @Override
                    public void onSuccess(Response<String> response) {
                        String body = response.body();
                        Gson gson = new Gson();
                        JsonBean jsonBean = gson.fromJson(body, JsonBean.class);
                        data = jsonBean.getData();

                        MyAdapter myAdapter = new MyAdapter();
                        listView.setAdapter(myAdapter);
                        myAdapter.notifyDataSetChanged();
                    }
                });
            }
        }).start();

//        PackageInfo info = pm.getPackageArchiveInfo(getPackageName(), PackageManager.GET_CONFIGURATIONS);

        PackageManager pm = getPackageManager();
        //获取宽高
        try {
            ActivityInfo info = pm.getActivityInfo(getComponentName(), PackageManager.GET_META_DATA);
            int width = info.metaData.getInt("design_width-1");
            int height = info.metaData.getInt("design_height-1");
            Log.i(TAG, "onCreate: 高"+height);
            Log.i(TAG, "onCreate: 宽"+width);
        } catch (PackageManager.NameNotFoundException e) {
            e.printStackTrace();
        }
    }

    public class MyAdapter extends BaseAdapter{

        @Override
        public int getCount() {
            return data.size();
        }

        @Override
        public Object getItem(int i) {
            return data.get(i);
        }

        @Override
        public long getItemId(int i) {
            return i;
        }

        @Override
        public View getView(int i, View view, ViewGroup viewGroup) {
            ViewHolder holder;
            if (view == null){
                holder = new ViewHolder();
                view = LayoutInflater.from(MainActivity.this).inflate(R.layout.item,null);
                holder.textView = view.findViewById(R.id.title_id);
                holder.imageView = view.findViewById(R.id.pic_ic);
                //设置分配律用在view上
                AutoUtils.autoSize(view);
            }else {
                holder = (ViewHolder) view.getTag();
            }
            holder.textView.setText(data.get(i).getTitle());
            Glide.with(MainActivity.this).load(data.get(i).getPic()).into(holder.imageView);
            return view;
        }

        public class ViewHolder{
            TextView textView;
            ImageView imageView;
        }
    }
}

自定义类

public class MyApplication extends Application {
    @Override
    public void onCreate() {
        super.onCreate();
        AutoLayoutConifg.getInstance().useDeviceSize();
    }
}

清单文件

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.day17_util">

    <application
        android:allowBackup="true"
        android:name=".MyApplication"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <meta-data android:name="design_width-1" android:value="800"></meta-data>
            <meta-data android:name="design_height-1" android:value="1280"></meta-data>
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <meta-data android:name="design_width" android:value="800"></meta-data>
        <meta-data android:name="design_height" android:value="1280"></meta-data>
    </application>

</manifest>