import com.facebook.rebound.SpringConfigRegistry; //导入依赖的package包/类
@TargetApi(11)
public SpringConfiguratorView(Context context, AttributeSet attrs, int defStyle) {
    super(context, attrs, defStyle);
    this.mSpringConfigs = new ArrayList();
    this.mTextColor = Color.argb(255, Opcodes.SHR_INT_LIT8, Opcodes.SHR_INT_LIT8, Opcodes
            .SHR_INT_LIT8);
    SpringSystem springSystem = SpringSystem.create();
    this.springConfigRegistry = SpringConfigRegistry.getInstance();
    this.spinnerAdapter = new SpinnerAdapter(context);
    Resources resources = getResources();
    this.mRevealPx = (float) Util.dpToPx(40.0f, resources);
    this.mStashPx = (float) Util.dpToPx(280.0f, resources);
    this.mRevealerSpring = springSystem.createSpring();
    this.mRevealerSpring.setCurrentValue(PathListView.NO_ZOOM).setEndValue(PathListView
            .NO_ZOOM).addListener(new RevealerSpringListener());
    addView(generateHierarchy(context));
    SeekbarListener seekbarListener = new SeekbarListener();
    this.mTensionSeekBar.setMax(MAX_SEEKBAR_VAL);
    this.mTensionSeekBar.setOnSeekBarChangeListener(seekbarListener);
    this.mFrictionSeekBar.setMax(MAX_SEEKBAR_VAL);
    this.mFrictionSeekBar.setOnSeekBarChangeListener(seekbarListener);
    this.mSpringSelectorSpinner.setAdapter(this.spinnerAdapter);
    this.mSpringSelectorSpinner.setOnItemSelectedListener(new SpringSelectedListener());
    refreshSpringConfigurations();
    setTranslationY(this.mStashPx);
}
 

import com.facebook.rebound.SpringConfigRegistry; //导入依赖的package包/类
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public SpringConfiguratorView(Context context, AttributeSet attrs, int defStyle) {
  super(context, attrs, defStyle);

  SpringSystem springSystem = SpringSystem.create();
  springConfigRegistry = SpringConfigRegistry.getInstance();
  spinnerAdapter = new SpinnerAdapter(context);

  Resources resources = getResources();
  mRevealPx = dpToPx(40, resources);
  mStashPx = dpToPx(280, resources);

  mRevealerSpring = springSystem.createSpring();
  SpringListener revealerSpringListener = new RevealerSpringListener();
  mRevealerSpring
      .setCurrentValue(1)
      .setEndValue(1)
      .addListener(revealerSpringListener);

  addView(generateHierarchy(context));

  SeekbarListener seekbarListener = new SeekbarListener();
  mTensionSeekBar.setMax(MAX_SEEKBAR_VAL);
  mTensionSeekBar.setOnSeekBarChangeListener(seekbarListener);

  mFrictionSeekBar.setMax(MAX_SEEKBAR_VAL);
  mFrictionSeekBar.setOnSeekBarChangeListener(seekbarListener);

  mSpringSelectorSpinner.setAdapter(spinnerAdapter);
  mSpringSelectorSpinner.setOnItemSelectedListener(new SpringSelectedListener());
  refreshSpringConfigurations();

  this.setTranslationY(mStashPx);
}
 

import com.facebook.rebound.SpringConfigRegistry; //导入依赖的package包/类
public SpringOverScroller(Context context, Interpolator interpolator, boolean flywheel) {
  mSpringSystem = SpringSystem.create();
  mSpringX = mSpringSystem
      .createSpring()
      .addListener(this);
  mSpringY = mSpringSystem
      .createSpring()
      .addListener(this);
  SpringConfigRegistry
      .getInstance()
      .addSpringConfig(RUBBERBANDING_CONFIG, "rubber-banding");
  SpringConfigRegistry
      .getInstance()
      .addSpringConfig(COASTING_CONFIG, "coasting");
}
 

import com.facebook.rebound.SpringConfigRegistry; //导入依赖的package包/类
@TargetApi(Build.VERSION_CODES.HONEYCOMB)
public SpringConfiguratorView(Context context, AttributeSet attrs, int defStyle) {
  super(context, attrs, defStyle);

  SpringSystem springSystem = SpringSystem.create();
  springConfigRegistry = SpringConfigRegistry.getInstance();
  spinnerAdapter = new SpinnerAdapter(context);

  Resources resources = getResources();
  mRevealPx = dpToPx(40, resources);
  mStashPx = dpToPx(280, resources);

  mRevealerSpring = springSystem.createSpring();
  SpringListener revealerSpringListener = new RevealerSpringListener();
  mRevealerSpring
      .setCurrentValue(1)
      .setEndValue(1)
      .addListener(revealerSpringListener);

  addView(generateHierarchy(context));

  SeekbarListener seekbarListener = new SeekbarListener();
  mTensionSeekBar.setMax(MAX_SEEKBAR_VAL);
  mTensionSeekBar.setOnSeekBarChangeListener(seekbarListener);

  mFrictionSeekBar.setMax(MAX_SEEKBAR_VAL);
  mFrictionSeekBar.setOnSeekBarChangeListener(seekbarListener);

  mSpringSelectorSpinner.setAdapter(spinnerAdapter);
  mSpringSelectorSpinner.setOnItemSelectedListener(new SpringSelectedListener());
  refreshSpringConfigurations();

  //this.setTranslationY(mStashPx);
}
 

import com.facebook.rebound.SpringConfigRegistry; //导入依赖的package包/类
private void init(Context context, ChatHeadConfig chatHeadDefaultConfig) {
    chatHeadContainer.onInitialized(this);
    DisplayMetrics metrics = new DisplayMetrics();
    WindowManager windowManager = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
    windowManager.getDefaultDisplay().getMetrics(metrics);
    this.displayMetrics = metrics;
    this.config = chatHeadDefaultConfig; //TODO : needs cleanup
    chatHeads = new ArrayList<>(5);
    arrowLayout = new UpArrowLayout(context);
    arrowLayout.setLayoutParams(new ViewGroup.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));
    chatHeadContainer.addView(arrowLayout, arrowLayout.getLayoutParams());
    arrowLayout.setVisibility(View.GONE);
    springSystem = SpringSystem.create();
    closeButton = new ChatHeadCloseButton(context, this, maxHeight, maxWidth);
    ViewGroup.LayoutParams layoutParams = chatHeadContainer.createLayoutParams(chatHeadDefaultConfig.getCloseButtonHeight(), chatHeadDefaultConfig.getCloseButtonWidth(), Gravity.TOP | Gravity.START, 0);
    closeButton.setListener(this);
    chatHeadContainer.addView(closeButton, layoutParams);
    closeButtonShadow = new ImageView(getContext());
    ViewGroup.LayoutParams shadowLayoutParams = chatHeadContainer.createLayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.MATCH_PARENT, Gravity.BOTTOM, 0);
    closeButtonShadow.setImageResource(R.drawable.dismiss_shadow);
    closeButtonShadow.setVisibility(View.GONE);
    chatHeadContainer.addView(closeButtonShadow, shadowLayoutParams);
    arrangements.put(MinimizedArrangement.class, new MinimizedArrangement(this));
    arrangements.put(MaximizedArrangement.class, new MaximizedArrangement<T>(this));
    setupOverlay(context);
    setConfig(chatHeadDefaultConfig);
    SpringConfigRegistry.getInstance().addSpringConfig(SpringConfigsHolder.DRAGGING, "dragging mode");
    SpringConfigRegistry.getInstance().addSpringConfig(SpringConfigsHolder.NOT_DRAGGING, "not dragging mode");
}
 

import com.facebook.rebound.SpringConfigRegistry; //导入依赖的package包/类
public OrigamiExample(Context context, AttributeSet attrs, int defStyle) {
  super(context, attrs, defStyle);

  // Inflate the layout.
  LayoutInflater inflater = LayoutInflater.from(context);
  ViewGroup root = (ViewGroup) inflater.inflate(R.layout.origami_example, this, false);
  addView(root);

  // Listen for clicks on the root view.
  root.setOnClickListener(new OnClickListener() {
    @Override
    public void onClick(View v) {
      handleClick(v);
    }
  });

  // Get references to our views.
  mPhotoGrid = root.findViewById(R.id.grid);
  mSelectedPhoto = root.findViewById(R.id.selection);
  mFeedbackBar = root.findViewById(R.id.feedback);
  mSpringConfiguratorView = (SpringConfiguratorView) root.findViewById(R.id.spring_configurator);

  // Setup the Spring by creating a SpringSystem adding a SimpleListener that renders the
  // animation whenever the spring is updated.
  mSpring = SpringSystem
      .create()
      .createSpring()
      .setSpringConfig(ORIGAMI_SPRING_CONFIG)
      .addListener(new SimpleSpringListener() {
        @Override
        public void onSpringUpdate(Spring spring) {
          // Just tell the UI to update based on the springs current state.
          render();
        }
      });


  // Here we just wait until the first layout pass finishes and call our render method to update
  // the animation to the initial resting state of the spring.
  mPhotoGrid.getViewTreeObserver().addOnGlobalLayoutListener(
      new ViewTreeObserver.OnGlobalLayoutListener() {
        @Override
        public void onGlobalLayout() {
          render();
          mPhotoGrid.getViewTreeObserver().removeOnGlobalLayoutListener(this);
        }
      });

  /** Optional - Live Spring Tuning **/

  // Put our config into a registry. This is optional, but it gives you the ability to live tune
  // the spring using the SpringConfiguratorView which will show up at the bottom of the screen.
  SpringConfigRegistry.getInstance().addSpringConfig(ORIGAMI_SPRING_CONFIG, "origami animation spring");
  // Tell the SpringConfiguratorView that we've updated the registry to allow you to live tune the animation spring.
  mSpringConfiguratorView.refreshSpringConfigurations();

  // Uncomment this line to actually show the SpringConfiguratorView allowing you to live tune
  // the Spring constants as you manipulate the UI.
  mSpringConfiguratorView.setVisibility(View.VISIBLE);
}
 

import com.facebook.rebound.SpringConfigRegistry; //导入依赖的package包/类
public OrigamiExample(Context context, AttributeSet attrs, int defStyle) {
  super(context, attrs, defStyle);

  // Inflate the layout.
  LayoutInflater inflater = LayoutInflater.from(context);
  ViewGroup root = (ViewGroup) inflater.inflate(R.layout.origami_example, this, false);
  addView(root);

  // Listen for clicks on the root view.
  root.setOnClickListener(new OnClickListener() {
    @Override
    public void onClick(View v) {
      handleClick(v);
    }
  });

  // Get references to our views.
  mPhotoGrid = root.findViewById(R.id.grid);
  mSelectedPhoto = root.findViewById(R.id.selection);
  mFeedbackBar = root.findViewById(R.id.feedback);
  mSpringConfiguratorView = (SpringConfiguratorView) root.findViewById(R.id.spring_configurator);

  // Setup the Spring by creating a SpringSystem adding a SimpleListener that renders the
  // animation whenever the spring is updated.
  mSpring = SpringSystem
      .create()
      .createSpring()
      .setSpringConfig(ORIGAMI_SPRING_CONFIG)
      .addListener(new SimpleSpringListener() {
        @Override
        public void onSpringUpdate(Spring spring) {
          // Just tell the UI to update based on the springs current state.
          render();
        }
      });


  // Here we just wait until the first layout pass finishes and call our render method to update
  // the animation to the initial resting state of the spring.
  mPhotoGrid.getViewTreeObserver().addOnGlobalLayoutListener(
      new ViewTreeObserver.OnGlobalLayoutListener() {
        @Override
        public void onGlobalLayout() {
          render();
          mPhotoGrid.getViewTreeObserver().removeGlobalOnLayoutListener(this);
        }
      });

  /** Optional - Live Spring Tuning **/

  // Put our config into a registry. This is optional, but it gives you the ability to live tune
  // the spring using the SpringConfiguratorView which will show up at the bottom of the screen.
  SpringConfigRegistry.getInstance().addSpringConfig(ORIGAMI_SPRING_CONFIG, "origami animation spring");
  // Tell the SpringConfiguratorView that we've updated the registry to allow you to live tune the animation spring.
  mSpringConfiguratorView.refreshSpringConfigurations();

  // Uncomment this line to actually show the SpringConfiguratorView allowing you to live tune
  // the Spring constants as you manipulate the UI.
  mSpringConfiguratorView.setVisibility(View.VISIBLE);
}