System directories
| Method | Result |
|---|---|
| Environment.getDataDirectory() | /data |
| Environment.getDownloadCacheDirectory() | /cache |
| Environment.getRootDirectory() | /system |
External storage directories
| package com.nieldeokar.whatsappaudiorecorder.recorder; | |
| import android.media.AudioFormat; | |
| import android.media.AudioRecord; | |
| import android.media.MediaCodec; | |
| import android.media.MediaCodecInfo; | |
| import android.media.MediaFormat; | |
| import android.media.MediaRecorder; | |
| import android.os.Build; | |
| import android.util.Log; |
| import android.graphics.Bitmap; | |
| import android.graphics.Bitmap.Config; | |
| import android.graphics.BitmapShader; | |
| import android.graphics.Canvas; | |
| import android.graphics.Paint; | |
| import android.graphics.Path; | |
| import android.graphics.RectF; | |
| import android.graphics.Shader; | |
| /** |
| package bmutinda.com.androidutils.libs; | |
| import android.view.MotionEvent; | |
| import android.view.View; | |
| /** | |
| * Created by Mutinda Boniface on 7/5/2015. | |
| */ | |
| public class SwipeEvents implements View.OnTouchListener { | |
| private SwipeCallback swipeCallback; |
System directories
| Method | Result |
|---|---|
| Environment.getDataDirectory() | /data |
| Environment.getDownloadCacheDirectory() | /cache |
| Environment.getRootDirectory() | /system |
External storage directories
| Latency Comparison Numbers (~2012) | |
| ---------------------------------- | |
| L1 cache reference 0.5 ns | |
| Branch mispredict 5 ns | |
| L2 cache reference 7 ns 14x L1 cache | |
| Mutex lock/unlock 25 ns | |
| Main memory reference 100 ns 20x L2 cache, 200x L1 cache | |
| Compress 1K bytes with Zippy 3,000 ns 3 us | |
| Send 1K bytes over 1 Gbps network 10,000 ns 10 us | |
| Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD |