android activity - how to get Cell Signal Strength in Lte without getAllCellInfo in andriod -

android activity - how to get Cell Signal Strength in Lte without getAllCellInfo in andriod -

i using bellow code signal strength in lte.

for (final cellinfo info : tm.getallcellinfo()) { if (info instanceof cellinfolte) { final cellsignalstrengthlte lte = ((cellinfolte) info).getcellsignalstrength(); lte.getdbm(); } }

but getallcellinfo in returning null. way initialize cellsignalstrengthlte without calling tm.getallcellinfo? api version 17.

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