/** * Created by hghl on 2017/8/23. */public class GestureActivity extends Activity implements OnTouchListener { private Button mButton = null; private int systemBrightness; private AudioManager audioManager = null; GestureDetector mGesture = null; private boolean moveLight = false; private float lightChange = 0f; private boolean moveVoice = false; private float voiceChange = 0; /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); audioManager =(AudioManager) getSystemService(Service.AUDIO_SERVICE); mButton = (Button)findViewById(R.id.button1); mButton.setOnTouchListener(this); try { systemBrightness = Settings.System.getInt(getContentResolver(), Settings.System.SCREEN_BRIGHTNESS); lightChange = systemBrightness; } catch (Settings.SettingNotFoundException e) { e.printStackTrace(); } } @Override public boolean onTouch(View v, MotionEvent event) { // TODO Auto-generated method stub if (mGesture == null) { mGesture = new GestureDetector(this, new GestureListener()); } if (event.getAction() == MotionEvent.ACTION_UP) { voiceChange = 0; } return mGesture.onTouchEvent(event); }// private int verticalMinDistance = 20;// private int minVelocity = 0; class GestureListener extends SimpleOnGestureListener { @Override public boolean onDoubleTap(MotionEvent e) { // TODO Auto-generated method stub Log.i("TEST===========", "onDoubleTap"); return super.onDoubleTap(e); } @Override public boolean onDown(MotionEvent e) { int viewWidth4 = Math.round(mButton.getWidth() / 3.0f); moveLight = false; moveVoice = false; if (viewWidth4 > e.getX()) { //调节亮度 moveLight = true; } else if ((viewWidth4 * 2) < e.getX()) { //调节音量 moveVoice = true; } // TODO Auto-generated method stub Log.i("TEST===========", "onDown"); return super.onDown(e); } @Override public boolean onFling(MotionEvent e1, MotionEvent e2, float velocityX, float velocityY) { // TODO Auto-generated method stub// if (e1.getX() - e2.getX() > verticalMinDistance && Math.abs(velocityX) > minVelocity) {// Toast.makeText(GestureActivity.this, "向左手势", Toast.LENGTH_SHORT).show();// } else if (e2.getX() - e1.getX() > verticalMinDistance && Math.abs(velocityX) > minVelocity) {// Toast.makeText(GestureActivity.this, "向右手势", Toast.LENGTH_SHORT).show();// } return super.onFling(e1, e2, velocityX, velocityY); } @Override public void onLongPress(MotionEvent e) { // TODO Auto-generated method stub Log.i("TEST===========", "onLongPress"); super.onLongPress(e); } @Override public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) { // TODO Auto-generated method stub Log.i("TEST===========", "onScroll:distanceX = " + distanceX + " distanceY = " + distanceY); if(moveLight) { changeLight(distanceY); } if (moveVoice) { changeVoice((Math.round(distanceY))); } return super.onScroll(e1, e2, distanceX, distanceY); } @Override public boolean onSingleTapUp(MotionEvent e) { // TODO Auto-generated method stub Log.i("TEST===========", "onSingleTapUp"); return super.onSingleTapUp(e); } @Override public boolean onDoubleTapEvent(MotionEvent e) { Log.i("TEST===========", "onDoubleTapEvent"); return super.onDoubleTapEvent(e); } } private void changeVoice(int distanceY){ voiceChange = voiceChange + distanceY; float baseNumber = mButton.getHeight() / 24.0f; if (voiceChange >= baseNumber) { voiceChange = 0; audioManager.adjustStreamVolume(AudioManager.STREAM_MUSIC, AudioManager.ADJUST_RAISE, AudioManager.FLAG_SHOW_UI); } else if ((0 - voiceChange) >= baseNumber) { voiceChange = 0; audioManager.adjustStreamVolume(AudioManager.STREAM_MUSIC, AudioManager.ADJUST_LOWER, AudioManager.FLAG_SHOW_UI); } } private void changeLight(float distanceY){ int height = mButton.getHeight(); lightChange = lightChange + distanceY / height * 255f; if (lightChange > 255) { lightChange = 255f; } else if (lightChange < 0) { lightChange = 0; } if(moveLight) { WindowManager.LayoutParams lp = getWindow().getAttributes(); lp.screenBrightness = Float.valueOf(lightChange) * (1f / 255f); getWindow().setAttributes(lp); } }}
