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<th class="colFirst" scope="col">类</th>
<th class="colLast" scope="col">说明</th>
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<td class="colFirst"><a href="../../../../../com/google/android/filament/android/DisplayHelper.html" title="com.google.android.filament.android中的类">DisplayHelper</a></td>
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<div class="block">DisplayHelper is here to help managing a Display, for instance being notified when its
 resolution or refresh rate changes.</div>
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