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 |