Java Code Examples for android.view.ViewTreeObserver#OnPreDrawListener

The following examples show how to use android.view.ViewTreeObserver#OnPreDrawListener . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: LithoScrollView.java    From litho with Apache License 2.0 6 votes vote down vote up 
void mount(
    ComponentTree contentComponentTree,
    final ScrollPosition scrollPosition,
    boolean isIncrementalMountEnabled) {
  mLithoView.setComponentTree(contentComponentTree);

  mIsIncrementalMountEnabled = isIncrementalMountEnabled;
  mScrollPosition = scrollPosition;
  final ViewTreeObserver.OnPreDrawListener onPreDrawListener =
      new ViewTreeObserver.OnPreDrawListener() {
        @Override
        public boolean onPreDraw() {
          setScrollY(scrollPosition.y);
          ViewTreeObserver currentViewTreeObserver = getViewTreeObserver();
          if (currentViewTreeObserver.isAlive()) {
            currentViewTreeObserver.removeOnPreDrawListener(this);
          }
          return true;
        }
      };
  getViewTreeObserver().addOnPreDrawListener(onPreDrawListener);

  mOnPreDrawListener = onPreDrawListener;
}
Example 2
Source File: EditTextBoldCursor.java    From Telegram with GNU General Public License v2.0 6 votes vote down vote up 
@SuppressLint("PrivateApi")
public void fixHandleView(boolean reset) {
    if (reset) {
        fixed = false;
    } else if (!fixed) {
        try {
            if (editorClass == null) {
                editorClass = Class.forName("android.widget.Editor");
                mEditor = TextView.class.getDeclaredField("mEditor");
                mEditor.setAccessible(true);
                editor = mEditor.get(this);
            }
            if (listenerFixer == null) {
                Method initDrawablesMethod = editorClass.getDeclaredMethod("getPositionListener");
                initDrawablesMethod.setAccessible(true);
                listenerFixer = (ViewTreeObserver.OnPreDrawListener) initDrawablesMethod.invoke(editor);
            }
            AndroidUtilities.runOnUIThread(listenerFixer::onPreDraw, 500);
        } catch (Throwable ignore) {

        }
        fixed = true;
    }
}
Example 3
Source File: SlidingRelativeLayout.java    From Kernel-Tuner with GNU General Public License v3.0 6 votes vote down vote up 
public void setXFraction(float fraction) {
	this.xFraction = fraction;
	if (getWidth() == 0) {
		if (preDrawListener == null) {
			preDrawListener = new ViewTreeObserver.OnPreDrawListener() {
				@Override
				public boolean onPreDraw() {
					getViewTreeObserver().removeOnPreDrawListener(
							preDrawListener);
					setXFraction(xFraction);
					return true;
				}
			};
			getViewTreeObserver().addOnPreDrawListener(preDrawListener);
		}
		return;
	}
	float translationX = getWidth() * fraction;
	setTranslationX(translationX);
}
Example 4
Source File: SlidingRelativeLayout.java    From Kernel-Tuner with GNU General Public License v3.0 6 votes vote down vote up 
public void setYFraction(float fraction) {
	this.yFraction = fraction;
	if (getHeight() == 0) {
		if (preDrawListener == null) {
			preDrawListener = new ViewTreeObserver.OnPreDrawListener() {
				@Override
				public boolean onPreDraw() {
					getViewTreeObserver().removeOnPreDrawListener(
							preDrawListener);
					setYFraction(yFraction);
					return true;
				}
			};
			getViewTreeObserver().addOnPreDrawListener(preDrawListener);
		}
		return;
	}
	float translationY = getHeight() * fraction;
	setTranslationY(translationY);
}
Example 5
Source File: EditTextBoldCursor.java    From Telegram-FOSS with GNU General Public License v2.0 6 votes vote down vote up 
@SuppressLint("PrivateApi")
public void fixHandleView(boolean reset) {
    if (reset) {
        fixed = false;
    } else if (!fixed) {
        try {
            if (editorClass == null) {
                editorClass = Class.forName("android.widget.Editor");
                mEditor = TextView.class.getDeclaredField("mEditor");
                mEditor.setAccessible(true);
                editor = mEditor.get(this);
            }
            if (listenerFixer == null) {
                Method initDrawablesMethod = editorClass.getDeclaredMethod("getPositionListener");
                initDrawablesMethod.setAccessible(true);
                listenerFixer = (ViewTreeObserver.OnPreDrawListener) initDrawablesMethod.invoke(editor);
            }
            AndroidUtilities.runOnUIThread(listenerFixer::onPreDraw, 500);
        } catch (Throwable ignore) {

        }
        fixed = true;
    }
}
Example 6
Source File: SlidingRelativeLayout.java    From TranslateFragment with Apache License 2.0 6 votes vote down vote up 
public void setYFraction(float fraction) {

            this.yFraction = fraction;

            if (getHeight() == 0) {
                if (preDrawListener == null) {
                    preDrawListener = new ViewTreeObserver.OnPreDrawListener() {
                        @Override
                        public boolean onPreDraw() {
                            getViewTreeObserver().removeOnPreDrawListener(preDrawListener);
                            setYFraction(yFraction);
                            return true;
                        }
                    };
                    getViewTreeObserver().addOnPreDrawListener(preDrawListener);
                }
                return;
            }

            float translationY = getHeight() * fraction;
            setTranslationY(translationY);
        }
Example 7
Source File: AndroidFragmentFrameLayout.java    From FragmentNavigationController with MIT License 6 votes vote down vote up 
public void setXFraction(float fraction) {
    this.xFraction = fraction;
    if (getWidth() == 0) {
        if (preDrawListener == null) {
            preDrawListener = new ViewTreeObserver.OnPreDrawListener() {
                @Override
                public boolean onPreDraw() {
                    getViewTreeObserver().removeOnPreDrawListener(
                            preDrawListener);
                    setXFraction(xFraction);
                    return true;
                }
            };
            getViewTreeObserver().addOnPreDrawListener(preDrawListener);
        }
        return;
    }
    float translationX = getWidth() * fraction;
    setTranslationX(translationX);
}
Example 8
Source File: AndroidFragmentFrameLayout.java    From FragmentNavigationController with MIT License 6 votes vote down vote up 
public void setYFraction(float fraction) {
    this.yFraction = fraction;
    if (getHeight() == 0) {
        if (preDrawListener == null) {
            preDrawListener = new ViewTreeObserver.OnPreDrawListener() {
                @Override
                public boolean onPreDraw() {
                    getViewTreeObserver().removeOnPreDrawListener(
                            preDrawListener);
                    setYFraction(yFraction);
                    return true;
                }
            };
            getViewTreeObserver().addOnPreDrawListener(preDrawListener);
        }
        return;
    }
    float translationY = getHeight() * fraction;
    setTranslationY(translationY);
}
Example 9
Source File: SnakeHackLayout.java    From Snake with Apache License 2.0 6 votes vote down vote up 
public void setFractionX(final float fractionX) {
    this.fractionX = fractionX;

    if(null == mPreDrawListener) {
        mPreDrawListener = new ViewTreeObserver.OnPreDrawListener() {
            @Override
            public boolean onPreDraw() {
                getViewTreeObserver().removeOnPreDrawListener(mPreDrawListener);
                setTranslateX(fractionX);
                return true;
            }
        };
        getViewTreeObserver().addOnPreDrawListener(mPreDrawListener);
    }

    setTranslateX(fractionX);
}
Example 10
Source File: ShimmerLayout.java    From AndroidAnimationExercise with Apache License 2.0 6 votes vote down vote up 
public void startShimmerAnimation() {
    if (isAnimationStarted) {
        return;
    }

    if (getWidth() == 0) {
        startAnimationPreDrawListener = new ViewTreeObserver.OnPreDrawListener() {
            @Override
            public boolean onPreDraw() {
                getViewTreeObserver().removeOnPreDrawListener(this);
                startShimmerAnimation();

                return true;
            }
        };

        getViewTreeObserver().addOnPreDrawListener(startAnimationPreDrawListener);

        return;
    }

    Animator animator = getShimmerAnimation();
    animator.start();
    isAnimationStarted = true;
}
Example 11
Source File: ShimmerLayout.java    From ShimmerLayout with Apache License 2.0 6 votes vote down vote up 
public void startShimmerAnimation() {
    if (isAnimationStarted) {
        return;
    }

    if (getWidth() == 0) {
        startAnimationPreDrawListener = new ViewTreeObserver.OnPreDrawListener() {
            @Override
            public boolean onPreDraw() {
                getViewTreeObserver().removeOnPreDrawListener(this);
                startShimmerAnimation();

                return true;
            }
        };

        getViewTreeObserver().addOnPreDrawListener(startAnimationPreDrawListener);

        return;
    }

    Animator animator = getShimmerAnimation();
    animator.start();
    isAnimationStarted = true;
}
Example 12
Source File: AndroidFragmentFrameLayout.java    From MusicPlayer with GNU General Public License v3.0 6 votes vote down vote up 
public void setXFraction(float fraction) {
    this.xFraction = fraction;
    if (getWidth() == 0) {
        if (preDrawListener == null) {
            preDrawListener = new ViewTreeObserver.OnPreDrawListener() {
                @Override
                public boolean onPreDraw() {
                    getViewTreeObserver().removeOnPreDrawListener(
                            preDrawListener);
                    setXFraction(xFraction);
                    return true;
                }
            };
            getViewTreeObserver().addOnPreDrawListener(preDrawListener);
        }
        return;
    }
    float translationX = getWidth() * fraction;
    setTranslationX(translationX);
}
Example 13
Source File: AndroidFragmentFrameLayout.java    From MusicPlayer with GNU General Public License v3.0 6 votes vote down vote up 
public void setYFraction(float fraction) {
    this.yFraction = fraction;
    if (getHeight() == 0) {
        if (preDrawListener == null) {
            preDrawListener = new ViewTreeObserver.OnPreDrawListener() {
                @Override
                public boolean onPreDraw() {
                    getViewTreeObserver().removeOnPreDrawListener(
                            preDrawListener);
                    setYFraction(yFraction);
                    return true;
                }
            };
            getViewTreeObserver().addOnPreDrawListener(preDrawListener);
        }
        return;
    }
    float translationY = getHeight() * fraction;
    setTranslationY(translationY);
}
Example 14
Source File: FloatingActionButtonImpl.java    From material-components-android with Apache License 2.0 5 votes vote down vote up 
@NonNull
private ViewTreeObserver.OnPreDrawListener getOrCreatePreDrawListener() {
  if (preDrawListener == null) {
    preDrawListener =
        new ViewTreeObserver.OnPreDrawListener() {
          @Override
          public boolean onPreDraw() {
            FloatingActionButtonImpl.this.onPreDraw();
            return true;
          }
        };
  }

  return preDrawListener;
}
Example 15
Source File: ViewPositionObserver.java    From 365browser with Apache License 2.0 5 votes vote down vote up 
/**
 * @param view The view to observe.
 */
public ViewPositionObserver(View view) {
    mView = view;
    mListeners = new ArrayList<Listener>();
    updatePosition();
    mPreDrawListener = new ViewTreeObserver.OnPreDrawListener() {
        @Override
        public boolean onPreDraw() {
            updatePosition();
            return true;
        }
    };
}
Example 16
Source File: SectionHeaderLayout.java    From sectioned-recycler-view with MIT License 5 votes vote down vote up 
/**
 * Runs the code just before the given view is being drawn so that its size has been already
 * calculated.
 *
 * @param view     View to be drawn.
 * @param runnable Code to run.
 */
private static void runJustBeforeBeingDrawn(final View view, final Runnable runnable) {
    final ViewTreeObserver.OnPreDrawListener onPreDrawListener = new ViewTreeObserver.OnPreDrawListener() {
        @Override
        public boolean onPreDraw() {
            view.getViewTreeObserver().removeOnPreDrawListener(this);
            runnable.run();
            return true;
        }
    };
    view.getViewTreeObserver().addOnPreDrawListener(onPreDrawListener);
}
Example 17
Source File: ViewPositionObserver.java    From android-chromium with BSD 2-Clause "Simplified" License 5 votes vote down vote up 
/**
 * @param view The view to observe.
 */
public ViewPositionObserver(View view) {
    mView = view;
    mListeners = new ArrayList<Listener>();
    updatePosition();
    mPreDrawListener = new ViewTreeObserver.OnPreDrawListener() {
        @Override
        public boolean onPreDraw() {
            updatePosition();
            return true;
        }
    };
}
Example 18
Source File: ViewPositionObserver.java    From android-chromium with BSD 2-Clause "Simplified" License 5 votes vote down vote up 
/**
 * @param view The view to observe.
 */
public ViewPositionObserver(View view) {
    mView = view;
    mListeners = new ArrayList<Listener>();
    updatePosition();
    mPreDrawListener = new ViewTreeObserver.OnPreDrawListener() {
        @Override
        public boolean onPreDraw() {
            updatePosition();
            return true;
        }
    };
}