System.arraycopy 實現多次點擊

long[] mHits = new long[3];


System.arraycopy(mHits, 1, mHits, 0, mHits.length-1);
mHits[mHits.length-1] = SystemClock.uptimeMillis();
if (mHits[0] >= (SystemClock.uptimeMillis()-500)) {
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.setClassName("android",
com.android.internal.app.PlatLogoActivity.class.getName());
try {
startActivity(intent);
} catch (Exception e) {
}
}