本文主要是介绍Android 自动适配屏幕方案—— smallestWidth，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
smallestWidth限定符适配原理和屏幕分辨率限定符适配一样，都是通过创建多个values文件夹，系统根据限定符去寻找对应的dimens.xml文件，以确定不同设备上的大小展示，smallestWidth 限定符适配是拿 dp 值来等比缩放.
如何使用
一、添加 ScreenMatch 插件
二、dimens文件添加
添加一份dimens.xml文件作为适配的基准，文件内容主要声明尺寸
<?xml version="1.0" encoding="UTF-8"?>
<resources><!-- Your custom size defind by references, can be writted in anywhere, any module, any values/*.xml, for example: --><dimen name="common_margin">@dimen/dp_15</dimen><!-- dp and sp values, must be defind in this file! --><!-- view size,you can add if there is no one --><dimen name="dp_m_60">-60dp</dimen><dimen name="dp_m_30">-30dp</dimen><dimen name="dp_m_20">-20dp</dimen><dimen name="dp_m_12">-12dp</dimen><dimen name="dp_m_10">-10dp</dimen><dimen name="dp_m_8">-8dp</dimen><dimen name="dp_m_5">-5dp</dimen><dimen name="dp_m_2">-2dp</dimen><dimen name="dp_m_1">-1dp</dimen><dimen name="dp_0">0dp</dimen><dimen name="dp_0_1">0.1dp</dimen><dimen name="dp_0_5">0.5dp</dimen><dimen name="dp_1">1dp</dimen><dimen name="dp_1_5">1.5dp</dimen><dimen name="dp_2">2dp</dimen><dimen name="dp_2_5">2.5dp</dimen><dimen name="dp_3">3dp</dimen><dimen name="dp_3_5">3.5dp</dimen><dimen name="dp_4">4dp</dimen><dimen name="dp_4_5">4.5dp</dimen><dimen name="dp_5">5dp</dimen><dimen name="dp_6">6dp</dimen><dimen name="dp_7">7dp</dimen><dimen name="dp_8">8dp</dimen><dimen name="dp_9">9dp</dimen><dimen name="dp_10">10dp</dimen><dimen name="dp_11">11dp</dimen><dimen name="dp_12">12dp</dimen><dimen name="dp_13">13dp</dimen><dimen name="dp_14">14dp</dimen><dimen name="dp_15">15dp</dimen><dimen name="dp_16">16dp</dimen><dimen name="dp_17">17dp</dimen><dimen name="dp_18">18dp</dimen><dimen name="dp_19">19dp</dimen><dimen name="dp_20">20dp</dimen><dimen name="dp_21">21dp</dimen><dimen name="dp_22">22dp</dimen><dimen name="dp_23">23dp</dimen><dimen name="dp_24">24dp</dimen><dimen name="dp_25">25dp</dimen><dimen name="dp_26">26dp</dimen><dimen name="dp_27">27dp</dimen><dimen name="dp_28">28dp</dimen><dimen name="dp_29">29dp</dimen><dimen name="dp_30">30dp</dimen><dimen name="dp_31">31dp</dimen><dimen name="dp_32">32dp</dimen><dimen name="dp_33">33dp</dimen><dimen name="dp_34">34dp</dimen><dimen name="dp_35">35dp</dimen><dimen name="dp_36">36dp</dimen><dimen name="dp_37">37dp</dimen><dimen name="dp_38">38dp</dimen><dimen name="dp_39">39dp</dimen><dimen name="dp_40">40dp</dimen><dimen name="dp_41">41dp</dimen><dimen name="dp_42">42dp</dimen><dimen name="dp_43">43dp</dimen><dimen name="dp_44">44dp</dimen><dimen name="dp_45">45dp</dimen><dimen name="dp_46">46dp</dimen><dimen name="dp_47">47dp</dimen><dimen name="dp_48">48dp</dimen><dimen name="dp_49">49dp</dimen><dimen name="dp_50">50dp</dimen><dimen name="dp_51">51dp</dimen><dimen name="dp_52">52dp</dimen><dimen name="dp_53">53dp</dimen><dimen name="dp_54">54dp</dimen><dimen name="dp_55">55dp</dimen><dimen name="dp_56">56dp</dimen><dimen name="dp_57">57dp</dimen><dimen name="dp_58">58dp</dimen><dimen name="dp_59">59dp</dimen><dimen name="dp_60">60dp</dimen><dimen name="dp_61">61dp</dimen><dimen name="dp_62">62dp</dimen><dimen name="dp_63">63dp</dimen><dimen name="dp_64">64dp</dimen><dimen name="dp_65">65dp</dimen><dimen name="dp_66">66dp</dimen><dimen name="dp_67">67dp</dimen><dimen name="dp_68">68dp</dimen><dimen name="dp_69">69dp</dimen><dimen name="dp_70">70dp</dimen><dimen name="dp_71">71dp</dimen><dimen name="dp_72">72dp</dimen><dimen name="dp_73">73dp</dimen><dimen name="dp_74">74dp</dimen><dimen name="dp_75">75dp</dimen><dimen name="dp_76">76dp</dimen><dimen name="dp_77">77dp</dimen><dimen name="dp_78">78dp</dimen><dimen name="dp_79">79dp</dimen><dimen name="dp_80">80dp</dimen><dimen name="dp_81">81dp</dimen><dimen name="dp_82">82dp</dimen><dimen name="dp_83">83dp</dimen><dimen name="dp_84">84dp</dimen><dimen name="dp_85">85dp</dimen><dimen name="dp_86">86dp</dimen><dimen name="dp_87">87dp</dimen><dimen name="dp_88">88dp</dimen><dimen name="dp_89">89dp</dimen><dimen name="dp_90">90dp</dimen><dimen name="dp_91">91dp</dimen><dimen name="dp_92">92dp</dimen><dimen name="dp_93">93dp</dimen><dimen name="dp_94">94dp</dimen><dimen name="dp_95">95dp</dimen><dimen name="dp_96">96dp</dimen><dimen name="dp_97">97dp</dimen><dimen name="dp_98">98dp</dimen><dimen name="dp_99">99dp</dimen><dimen name="dp_100">100dp</dimen><dimen name="dp_101">101dp</dimen><dimen name="dp_102">102dp</dimen><dimen name="dp_103">103dp</dimen><dimen name="dp_104">104dp</dimen><dimen name="dp_105">105dp</dimen><dimen name="dp_106">106dp</dimen><dimen name="dp_107">107dp</dimen><dimen name="dp_108">108dp</dimen><dimen name="dp_109">109dp</dimen><dimen name="dp_110">110dp</dimen><dimen name="dp_111">111dp</dimen><dimen name="dp_112">112dp</dimen><dimen name="dp_113">113dp</dimen><dimen name="dp_114">114dp</dimen><dimen name="dp_115">115dp</dimen><dimen name="dp_116">116dp</dimen><dimen name="dp_117">117dp</dimen><dimen name="dp_118">118dp</dimen><dimen name="dp_119">119dp</dimen><dimen name="dp_120">120dp</dimen><dimen name="dp_121">121dp</dimen><dimen name="dp_122">122dp</dimen><dimen name="dp_123">123dp</dimen><dimen name="dp_124">124dp</dimen><dimen name="dp_125">125dp</dimen><dimen name="dp_126">126dp</dimen><dimen name="dp_127">127dp</dimen><dimen name="dp_128">128dp</dimen><dimen name="dp_129">129dp</dimen><dimen name="dp_130">130dp</dimen><dimen name="dp_131">131dp</dimen><dimen name="dp_132">132dp</dimen><dimen name="dp_133">133dp</dimen><dimen name="dp_134">134dp</dimen><dimen name="dp_135">135dp</dimen><dimen name="dp_136">136dp</dimen><dimen name="dp_137">137dp</dimen><dimen name="dp_138">138dp</dimen><dimen name="dp_139">139dp</dimen><dimen name="dp_140">140dp</dimen><dimen name="dp_141">141dp</dimen><dimen name="dp_142">142dp</dimen><dimen name="dp_143">143dp</dimen><dimen name="dp_144">144dp</dimen><dimen name="dp_145">145dp</dimen><dimen name="dp_146">146dp</dimen><dimen name="dp_147">147dp</dimen><dimen name="dp_148">148dp</dimen><dimen name="dp_149">149dp</dimen><dimen name="dp_150">150dp</dimen><dimen name="dp_151">151dp</dimen><dimen name="dp_152">152dp</dimen><dimen name="dp_153">153dp</dimen><dimen name="dp_154">154dp</dimen><dimen name="dp_155">155dp</dimen><dimen name="dp_156">156dp</dimen><dimen name="dp_157">157dp</dimen><dimen name="dp_158">158dp</dimen><dimen name="dp_159">159dp</dimen><dimen name="dp_160">160dp</dimen><dimen name="dp_161">161dp</dimen><dimen name="dp_162">162dp</dimen><dimen name="dp_163">163dp</dimen><dimen name="dp_164">164dp</dimen><dimen name="dp_165">165dp</dimen><dimen name="dp_166">166dp</dimen><dimen name="dp_167">167dp</dimen><dimen name="dp_168">168dp</dimen><dimen name="dp_169">169dp</dimen><dimen name="dp_170">170dp</dimen><dimen name="dp_171">171dp</dimen><dimen name="dp_172">172dp</dimen><dimen name="dp_173">173dp</dimen><dimen name="dp_174">174dp</dimen><dimen name="dp_175">175dp</dimen><dimen name="dp_176">176dp</dimen><dimen name="dp_177">177dp</dimen><dimen name="dp_178">178dp</dimen><dimen name="dp_179">179dp</dimen><dimen name="dp_180">180dp</dimen><dimen name="dp_181">181dp</dimen><dimen name="dp_182">182dp</dimen><dimen name="dp_183">183dp</dimen><dimen name="dp_184">184dp</dimen><dimen name="dp_185">185dp</dimen><dimen name="dp_186">186dp</dimen><dimen name="dp_187">187dp</dimen><dimen name="dp_188">188dp</dimen><dimen name="dp_189">189dp</dimen><dimen name="dp_190">190dp</dimen><dimen name="dp_191">191dp</dimen><dimen name="dp_192">192dp</dimen><dimen name="dp_193">193dp</dimen><dimen name="dp_194">194dp</dimen><dimen name="dp_195">195dp</dimen><dimen name="dp_196">196dp</dimen><dimen name="dp_197">197dp</dimen><dimen name="dp_198">198dp</dimen><dimen name="dp_199">199dp</dimen><dimen name="dp_200">200dp</dimen><dimen name="dp_201">201dp</dimen><dimen name="dp_202">202dp</dimen><dimen name="dp_203">203dp</dimen><dimen name="dp_204">204dp</dimen><dimen name="dp_205">205dp</dimen><dimen name="dp_206">206dp</dimen><dimen name="dp_207">207dp</dimen><dimen name="dp_208">208dp</dimen><dimen name="dp_209">209dp</dimen><dimen name="dp_210">210dp</dimen><dimen name="dp_211">211dp</dimen><dimen name="dp_212">212dp</dimen><dimen name="dp_213">213dp</dimen><dimen name="dp_214">214dp</dimen><dimen name="dp_215">215dp</dimen><dimen name="dp_216">216dp</dimen><dimen name="dp_217">217dp</dimen><dimen name="dp_218">218dp</dimen><dimen name="dp_219">219dp</dimen><dimen name="dp_220">220dp</dimen><dimen name="dp_221">221dp</dimen><dimen name="dp_222">222dp</dimen><dimen name="dp_223">223dp</dimen><dimen name="dp_224">224dp</dimen><dimen name="dp_225">225dp</dimen><dimen name="dp_226">226dp</dimen><dimen name="dp_227">227dp</dimen><dimen name="dp_228">228dp</dimen><dimen name="dp_229">229dp</dimen><dimen name="dp_230">230dp</dimen><dimen name="dp_231">231dp</dimen><dimen name="dp_232">232dp</dimen><dimen name="dp_233">233dp</dimen><dimen name="dp_234">234dp</dimen><dimen name="dp_235">235dp</dimen><dimen name="dp_236">236dp</dimen><dimen name="dp_237">237dp</dimen><dimen name="dp_238">238dp</dimen><dimen name="dp_239">239dp</dimen><dimen name="dp_240">240dp</dimen><dimen name="dp_241">241dp</dimen><dimen name="dp_242">242dp</dimen><dimen name="dp_243">243dp</dimen><dimen name="dp_244">244dp</dimen><dimen name="dp_245">245dp</dimen><dimen name="dp_246">246dp</dimen><dimen name="dp_247">247dp</dimen><dimen name="dp_248">248dp</dimen><dimen name="dp_249">249dp</dimen><dimen name="dp_250">250dp</dimen><dimen name="dp_251">251dp</dimen><dimen name="dp_252">252dp</dimen><dimen name="dp_253">253dp</dimen><dimen name="dp_254">254dp</dimen><dimen name="dp_255">255dp</dimen><dimen name="dp_256">256dp</dimen><dimen name="dp_257">257dp</dimen><dimen name="dp_258">258dp</dimen><dimen name="dp_259">259dp</dimen><dimen name="dp_260">260dp</dimen><dimen name="dp_261">261dp</dimen><dimen name="dp_262">262dp</dimen><dimen name="dp_263">263dp</dimen><dimen name="dp_264">264dp</dimen><dimen name="dp_265">265dp</dimen><dimen name="dp_266">266dp</dimen><dimen name="dp_267">267dp</dimen><dimen name="dp_268">268dp</dimen><dimen name="dp_269">269dp</dimen><dimen name="dp_270">270dp</dimen><dimen name="dp_271">271dp</dimen><dimen name="dp_272">272dp</dimen><dimen name="dp_273">273dp</dimen><dimen name="dp_274">274dp</dimen><dimen name="dp_275">275dp</dimen><dimen name="dp_276">276dp</dimen><dimen name="dp_277">277dp</dimen><dimen name="dp_278">278dp</dimen><dimen name="dp_279">279dp</dimen><dimen name="dp_280">280dp</dimen><dimen name="dp_281">281dp</dimen><dimen name="dp_282">282dp</dimen><dimen name="dp_283">283dp</dimen><dimen name="dp_284">284dp</dimen><dimen name="dp_285">285dp</dimen><dimen name="dp_286">286dp</dimen><dimen name="dp_287">287dp</dimen><dimen name="dp_288">288dp</dimen><dimen name="dp_289">289dp</dimen><dimen name="dp_290">290dp</dimen><dimen name="dp_291">291dp</dimen><dimen name="dp_292">292dp</dimen><dimen name="dp_293">293dp</dimen><dimen name="dp_294">294dp</dimen><dimen name="dp_295">295dp</dimen><dimen name="dp_296">296dp</dimen><dimen name="dp_297">297dp</dimen><dimen name="dp_298">298dp</dimen><dimen name="dp_299">299dp</dimen><dimen name="dp_300">300dp</dimen><dimen name="dp_301">301dp</dimen><dimen name="dp_302">302dp</dimen><dimen name="dp_303">303dp</dimen><dimen name="dp_304">304dp</dimen><dimen name="dp_305">305dp</dimen><dimen name="dp_306">306dp</dimen><dimen name="dp_307">307dp</dimen><dimen name="dp_308">308dp</dimen><dimen name="dp_309">309dp</dimen><dimen name="dp_310">310dp</dimen><dimen name="dp_311">311dp</dimen><dimen name="dp_312">312dp</dimen><dimen name="dp_313">313dp</dimen><dimen name="dp_314">314dp</dimen><dimen name="dp_315">315dp</dimen><dimen name="dp_316">316dp</dimen><dimen name="dp_317">317dp</dimen><dimen name="dp_318">318dp</dimen><dimen name="dp_319">319dp</dimen><dimen name="dp_320">320dp</dimen><dimen name="dp_321">321dp</dimen><dimen name="dp_322">322dp</dimen><dimen name="dp_323">323dp</dimen><dimen name="dp_324">324dp</dimen><dimen name="dp_325">325dp</dimen><dimen name="dp_326">326dp</dimen><dimen name="dp_327">327dp</dimen><dimen name="dp_328">328dp</dimen><dimen name="dp_329">329dp</dimen><dimen name="dp_330">330dp</dimen><dimen name="dp_331">331dp</dimen><dimen name="dp_332">332dp</dimen><dimen name="dp_333">333dp</dimen><dimen name="dp_334">334dp</dimen><dimen name="dp_335">335dp</dimen><dimen name="dp_336">336dp</dimen><dimen name="dp_337">337dp</dimen><dimen name="dp_338">338dp</dimen><dimen name="dp_339">339dp</dimen><dimen name="dp_340">340dp</dimen><dimen name="dp_341">341dp</dimen><dimen name="dp_342">342dp</dimen><dimen name="dp_343">343dp</dimen><dimen name="dp_344">344dp</dimen><dimen name="dp_345">345dp</dimen><dimen name="dp_346">346dp</dimen><dimen name="dp_347">347dp</dimen><dimen name="dp_348">348dp</dimen><dimen name="dp_349">349dp</dimen><dimen name="dp_350">350dp</dimen><dimen name="dp_351">351dp</dimen><dimen name="dp_352">352dp</dimen><dimen name="dp_353">353dp</dimen><dimen name="dp_354">354dp</dimen><dimen name="dp_355">355dp</dimen><dimen name="dp_356">356dp</dimen><dimen name="dp_357">357dp</dimen><dimen name="dp_358">358dp</dimen><dimen name="dp_359">359dp</dimen><dimen name="dp_360">360dp</dimen><dimen name="dp_365">365dp</dimen><dimen name="dp_370">370dp</dimen><dimen name="dp_400">400dp</dimen><dimen name="dp_410">410dp</dimen><dimen name="dp_422">422dp</dimen><dimen name="dp_472">472dp</dimen><dimen name="dp_500">500dp</dimen><dimen name="dp_600">600dp</dimen><dimen name="dp_640">640dp</dimen><dimen name="dp_720">720dp</dimen><!-- font size,you can add if there is no one --><dimen name="sp_6">6sp</dimen><dimen name="sp_7">7sp</dimen><dimen name="sp_8">8sp</dimen><dimen name="sp_9">9sp</dimen><dimen name="sp_10">10sp</dimen><dimen name="sp_11">11sp</dimen><dimen name="sp_12">12sp</dimen><dimen name="sp_13">13sp</dimen><dimen name="sp_14">14sp</dimen><dimen name="sp_15">15sp</dimen><dimen name="sp_16">16sp</dimen><dimen name="sp_17">17sp</dimen><dimen name="sp_18">18sp</dimen><dimen name="sp_19">19sp</dimen><dimen name="sp_20">20sp</dimen><dimen name="sp_21">21sp</dimen><dimen name="sp_22">22sp</dimen><dimen name="sp_23">23sp</dimen><dimen name="sp_24">24sp</dimen><dimen name="sp_25">25sp</dimen><dimen name="sp_28">28sp</dimen><dimen name="sp_30">30sp</dimen><dimen name="sp_32">32sp</dimen><dimen name="sp_34">34sp</dimen><dimen name="sp_36">36sp</dimen><dimen name="sp_38">38sp</dimen><dimen name="sp_40">40sp</dimen><dimen name="sp_42">42sp</dimen><dimen name="sp_48">48sp</dimen></resources>三、screenMatch生成values
四、更新配置
在使用了ScreenMatch时，在Module层级的目录下会有一个ScreenMatch配置文件——screenMatch.properties，在其中可以更新配置，如果要更新需要适配的尺寸，可以在如下的代码中进行变动
base_dp=360
# Also need to match the phone screen of [match_dp].
# If you have another dp values.
# System default values is 240,320,384,392,400,410,411,480,533,592,600,640,662,720,768,800,811,820,960,961,1024,1280,1365
match_dp=
# If you not wanna to match dp values above. Write some above values here, append value with "," .
# For example: 811,961,1365base_dp 是你的基准尺寸，可以在System default values中添加你需要适配的尺寸，然后重新执行第三步重新生成values及对应的dimens.xml文件。
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