Java Code Examples for android.view.ViewGroup#post()

/**
 * 系统版本4.4或以上才可以设置沉浸式状态栏
 *
 * 设置状态栏的高度
 */
protected void setStatus(){
    bar_layout= (ViewGroup) findViewById(R.id.bar_layout);
    if (Build.VERSION.SDK_INT >=Build.VERSION_CODES.KITKAT){
        //设置状态栏透明
        getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
        //设置导航栏透明
        getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION);
        final int statusBarHeight = getStatusBarHeight();
        bar_layout.post(new Runnable() {
            @Override
            public void run() {
                //标题栏高度
                int height=bar_layout.getHeight();
                android.widget.RelativeLayout.LayoutParams params = (android.widget.RelativeLayout.LayoutParams) bar_layout.getLayoutParams();
                //导航栏高度+通知栏高度
                params.height=height+statusBarHeight;
                bar_layout.setLayoutParams(params);
            }
        });
    }
}
 

/**
 * 系统版本4.4或以上才可以设置沉浸式状态栏
 *
 * 设置状态栏的高度
 */
protected void setStatus(){
    bar_layout= (ViewGroup) findViewById(R.id.bar_layout);
    if (Build.VERSION.SDK_INT >=Build.VERSION_CODES.KITKAT){
        //设置状态栏透明
        getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
        //设置导航栏透明
        getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION);
        final int statusBarHeight = getStatusBarHeight();
        bar_layout.post(new Runnable() {
            @Override
            public void run() {
                //标题栏高度
                int height=bar_layout.getHeight();
                android.widget.RelativeLayout.LayoutParams params = (android.widget.RelativeLayout.LayoutParams) bar_layout.getLayoutParams();
                //导航栏高度+通知栏高度
                params.height=height+statusBarHeight;
                bar_layout.setLayoutParams(params);
            }
        });
    }
}
 

@Override
protected void onFinishInflate() {
    super.onFinishInflate();

    if(getChildCount() > 0) {
        if(getChildAt(0) instanceof ViewGroup) {
            ViewGroup childLayout = (ViewGroup) getChildAt(0);
            childLayout.post(new Runnable() {
                @Override
                public void run() {
                    updateCover();
                }
            });

            if(childLayout.getChildCount() > 0) {
                childLayout.getChildAt(0).post(new Runnable() {
                    @Override
                    public void run() {
                        updateCover();
                    }
                });
            }
        }
    }
    updateCover();
}
 

/**
 * Pop stickyView to stack
 */
private void showSticky() {
  WXCell headComponent = headComponentStack.pop();
  headComponentStack.push(headComponent);
  final View headerView = headComponent.getRealView();
  if (headerView == null)
    return;
  headerViewStack.push(headerView);
  headComponent.removeSticky();
  final ViewGroup parent = (ViewGroup) getParent();
  if(parent != null){
    parent.post(WXThread.secure(new Runnable() {
      @Override
      public void run() {
        ViewGroup existedParent;
        if((existedParent = (ViewGroup)headerView.getParent())!= null){
          existedParent.removeView(headerView);
        }
        parent.addView(headerView);
      }
    }));
  }
}
 

/**
 * remove top stickyView
 * @param component
 */
private void removeSticky(WXComponent component) {
  final WXCell headComponent = headComponentStack.pop();
  if (!component.getRef().equals(headComponent.getRef())) {
    headComponentStack.push(headComponent);
    return;
  }
  final View headerView = headerViewStack.pop();
  final ViewGroup parent = (ViewGroup) getParent();
  if(parent != null){
    parent.post(WXThread.secure(new Runnable() {
      @Override
      public void run() {
        parent.removeView(headerView);
        headComponent.recoverySticky();
      }
    }));
  }

}
 

/**
 * Pop stickyView to stack
 */
private void showSticky() {
  WXCell headComponent = headComponentStack.pop();
  headComponentStack.push(headComponent);
  final View headerView = headComponent.getRealView();
  if (headerView == null)
    return;
  headerViewStack.push(headerView);
  headComponent.removeSticky();
  final ViewGroup parent = (ViewGroup) getParent();
  if(parent != null){
    parent.post(WXThread.secure(new Runnable() {
      @Override
      public void run() {
        ViewGroup existedParent;
        if((existedParent = (ViewGroup)headerView.getParent())!= null){
          existedParent.removeView(headerView);
        }
        parent.addView(headerView);
      }
    }));
  }
}
 

/**
 * remove top stickyView
 * @param component
 */
private void removeSticky(WXComponent component) {
  final WXCell headComponent = headComponentStack.pop();
  if (!component.getRef().equals(headComponent.getRef())) {
    headComponentStack.push(headComponent);
    return;
  }
  final View headerView = headerViewStack.pop();
  final ViewGroup parent = (ViewGroup) getParent();
  if(parent != null){
    parent.post(WXThread.secure(new Runnable() {
      @Override
      public void run() {
        parent.removeView(headerView);
        headComponent.recoverySticky();
      }
    }));
  }

}
 

private void initViews() {
    mCaptureView = (ViewGroup) findViewById(R.id.capture_layout);
    mListView = (ListView) findViewById(R.id.listView);
    mImageView = (ImageView) findViewById(R.id.imageView);
    final List<String> list = new ArrayList<>();
    for (int i = 0; i < 35; i++) {
        list.add("item " + i);
    }
    MainAdapter adapter = new MainAdapter(this, list);
    mListView.setAdapter(adapter);
    mCaptureView.post(new Runnable() {
        @Override
        public void run() {
            LogUtils.i(String.format("width=%s, height=%s, measureWidth=%s, measureHeight=%s", mCaptureView.getWidth(), mCaptureView.getHeight(), mCaptureView.getMeasuredWidth(), mCaptureView.getMeasuredHeight()));
        }
    });
}
 

public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    mViews = FragmentAmenityInformationBinding.inflate(inflater, container, false);
    final ViewGroup rootView = (ViewGroup) mViews.getRoot();
    rootView.post(() -> {
        updatePeekHeight(rootView, false);
        int panelState = BottomSheetBehavior.STATE_COLLAPSED;
        if (savedInstanceState != null) {
            panelState = savedInstanceState.getInt("panelState", panelState);
            View dragHandle = rootView.findViewById(R.id.dragHandle);
            dragHandle.setAlpha(panelState == BottomSheetBehavior.STATE_EXPANDED ? 0f : 1f);
        }
        mBottomSheetBehavior.setState(panelState);
        // Workaround for panel partially drawn on first slide
        // TODO Try to put transparent view above map
        if (Configuration.getHideSystemUI())
            rootView.requestLayout();
    });
    mMapHolder.updateMapViewArea();

    return rootView;
}
 

public void setCanvasSize(final Bitmap b, final ViewGroup imageGroup) {
    if (imageGroup.getMeasuredWidth() == 0) {
        imageGroup.post(new Runnable() {
            @Override
            public void run() {
                setSize(b, imageGroup);
            }
        });
    } else {
        setSize(b, imageGroup);
    }
}
 

private void removeFromParent(final View view) {

        // If we don't include the post() call, the following error occurs:
        // Attempt to read from field 'int android.view.View.mViewFlags' on a null object reference
        // So far I haven't been able to isolate the cause of this -- I think it might be related
        // to removing the view immediately after an animation ends, but I haven't been able to
        // reproduce it under controlled conditions.
        final ViewGroup parent = (ViewGroup) view.getParent();
        parent.post(new Runnable() {
            @Override
            public void run() {
                parent.removeView(view);
            }
        });
    }
 

public void setAmenity(long id) {
    mAmenity = MapTrekDatabaseHelper.getAmenityData(mLang, id, MapTrek.getApplication().getDetailedMapDatabase());
    if (isVisible()) {
        mMapHolder.showMarker(mAmenity.coordinates, mAmenity.name, true);
        updateAmenityInformation(mLatitude, mLongitude);
        final ViewGroup rootView = (ViewGroup) getView();
        if (rootView != null)
            rootView.post(() -> updatePeekHeight(rootView, true));
    }
}
 

public void setWaypoint(Waypoint waypoint) {
    mWaypoint = waypoint;
    if (isVisible()) {
        if (mEditorMode)
            setEditorMode(false);
        mListener.onWaypointFocus(mWaypoint);
        updateWaypointInformation(mLatitude, mLongitude);
        final ViewGroup rootView = (ViewGroup) getView();
        if (rootView != null)
            rootView.post(() -> updatePeekHeight(rootView, true));
    }
}
 

/**
 * Create a ImageView with width and height MATCH_PARENT, which will host the blurred snapshot.
 */
private void createImageViewBlur() {

    if (mUseBlur) {
        mRootView = (ViewGroup) ((Activity) mContext).getWindow().getDecorView()
                .findViewById(android.R.id.content);

        mBlurredImageView = new ImageView(mContext);

        RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(
                ViewGroup.LayoutParams.MATCH_PARENT,
                ViewGroup.LayoutParams.MATCH_PARENT);

        Log.d("YYYYY width", "" + mRootView.getWidth());
        Log.d("YYYYY height", "" + mRootView.getHeight());
        mBlurredImageView.setLayoutParams(params);
        mBlurredImageView.setClickable(false);
        mBlurredImageView.setVisibility(View.GONE);
        mBlurredImageView.setScaleType(ImageView.ScaleType.FIT_XY);

        mRootView.post(new Runnable() {
            @Override
            public void run() {
                // Add the ImageView with blurred view
                ((ViewGroup) mRootView.getChildAt(0))
                        .addView(mBlurredImageView, mRootView.getChildCount());
            }
        });
    }
}
 

/**
 * 截屏inflate视图
 */
private void captureInflateView() {
    View rootView = LayoutInflater.from(this).inflate(R.layout.layout_listview, null, false);
    rootView.setLayoutParams(new LinearLayout.LayoutParams(ScreenUtil.getScreenWidth(this), LinearLayout.LayoutParams.WRAP_CONTENT));
    // rootView.getLayoutParams().width = ScreenUtil.getScreenWidth(this);
    rootView.requestLayout();

    final ViewGroup mCaptureView = (ViewGroup) rootView.findViewById(R.id.capture_layout);
    ListView mListView = (ListView) rootView.findViewById(R.id.listView);
    final List<String> list = new ArrayList<>();
    for (int i = 0; i < 20; i++) {
        list.add("item " + i);
    }
    MainAdapter adapter = new MainAdapter(this, list);
    mListView.setAdapter(adapter);

    mCaptureView.post(new Runnable() {
        @Override
        public void run() {
            LogUtils.i(String.format("width=%s, height=%s, measureWidth=%s, measureHeight=%s", mCaptureView.getWidth(), mCaptureView.getHeight(), mCaptureView.getMeasuredWidth(), mCaptureView.getMeasuredHeight()));
        }
    });

    int width = ScreenUtil.getScreenWidth(this);
    ViewToImageUtil.generateImage(mCaptureView, width, 0xfff8f8f8, new ViewToImageUtil.OnImageSavedCallback() {
        @Override
        public void onFinishCallback(String path) {
            Toast.makeText(MainActivity.this, path, Toast.LENGTH_SHORT).show();
            LogUtils.d(path);
        }
    });
}
 

private void initTransitions() {
    final PLVideoEncodeSetting setting = new PLVideoEncodeSetting(TransitionMakeActivity.this);
    setting.setEncodingSizeLevel(PLVideoEncodeSetting.VIDEO_ENCODING_SIZE_LEVEL.VIDEO_ENCODING_SIZE_LEVEL_720P_3);
    for (int i = 0; i < mTransitions.length; i++) {
        final ViewGroup viewGroup = (ViewGroup) findViewById(getResources().getIdentifier("transition_container" + i, "id", getPackageName()));
        final int index = i;
        viewGroup.post(new Runnable() {
            @Override
            public void run() {
                try {
                    Constructor constructor = TRANSITION_CLASS[index].getConstructor(ViewGroup.class, PLVideoEncodeSetting.class);
                    TransitionBase transition = (TransitionBase) constructor.newInstance(viewGroup, setting);

                    mTransitions[index] = transition;

                    //default show first transition
                    if (index == 0) {
                        transition.setVisibility(View.VISIBLE);
                        mCurTransition = transition;
                        mTransEditView.setTransition(mCurTransition);
                    } else {
                        transition.setVisibility(View.INVISIBLE);
                    }
                } catch (Exception e) {
                    e.printStackTrace();
                    ToastUtils.s(TransitionMakeActivity.this, "Can not init Transition : " + "Transition" + index);
                }
            }
        });
    }
}
 

public void setCanvasSize(final Bitmap b, final ViewGroup imageGroup) {
    if (imageGroup.getMeasuredWidth() == 0) {
        imageGroup.post(new Runnable() {
            @Override
            public void run() {
                setSize(b, imageGroup);
            }
        });
    } else {
        setSize(b, imageGroup);
    }
}
 

public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    final ViewGroup rootView = (ViewGroup) inflater.inflate(R.layout.fragment_waypoint_information, container, false);
    final ImageButton editButton = rootView.findViewById(R.id.editButton);
    final ImageButton shareButton = rootView.findViewById(R.id.shareButton);
    final ImageButton deleteButton = rootView.findViewById(R.id.deleteButton);

    editButton.setOnClickListener(v -> setEditorMode(true));
    shareButton.setOnClickListener(v -> {
        mBottomSheetBehavior.setState(BottomSheetBehavior.STATE_HIDDEN);
        mListener.onWaypointShare(mWaypoint);
    });
    deleteButton.setOnClickListener(v -> {
        Animation shake = AnimationUtils.loadAnimation(getContext(), R.anim.shake);
        v.startAnimation(shake);
    });
    deleteButton.setOnLongClickListener(v -> {
        mBottomSheetBehavior.setState(BottomSheetBehavior.STATE_HIDDEN);
        mListener.onWaypointDelete(mWaypoint);
        return true;
    });

    mEditorMode = false;
    mPopAll = false;

    rootView.post(() -> {
        updatePeekHeight(rootView, false);
        mBottomSheetBehavior.setSkipCollapsed(mExpanded);
        int panelState = mExpanded ? BottomSheetBehavior.STATE_EXPANDED : BottomSheetBehavior.STATE_COLLAPSED;
        if (savedInstanceState != null) {
            panelState = savedInstanceState.getInt("panelState", panelState);
            View dragHandle = rootView.findViewById(R.id.dragHandle);
            dragHandle.setAlpha(panelState == BottomSheetBehavior.STATE_EXPANDED ? 0f : 1f);
        }
        mBottomSheetBehavior.setState(panelState);
        // Workaround for panel partially drawn on first slide
        // TODO Try to put transparent view above map
        if (Configuration.getHideSystemUI())
            rootView.requestLayout();
    });

    return rootView;
}
 

protected PullToRefreshAttacher(Activity activity, Options options) {
    if (activity == null) {
        throw new IllegalArgumentException("activity cannot be null");
    }
    if (options == null) {
        Log.i(LOG_TAG, "Given null options so using default options.");
        options = new Options();
    }

    mActivity = activity;
    mRefreshableViews = new WeakHashMap<View, ViewDelegate>();

    // Copy necessary values from options
    mRefreshScrollDistance = options.refreshScrollDistance;
    mRefreshOnUp = options.refreshOnUp;
    mRefreshMinimizeDelay = options.refreshMinimizeDelay;
    mRefreshMinimize = options.refreshMinimize;

    // EnvironmentDelegate
    mEnvironmentDelegate = options.environmentDelegate != null
            ? options.environmentDelegate
            : createDefaultEnvironmentDelegate();

    // Header Transformer
    mHeaderTransformer = options.headerTransformer != null
            ? options.headerTransformer
            : createDefaultHeaderTransformer();

    // Get touch slop for use later
    mTouchSlop = ViewConfiguration.get(activity).getScaledTouchSlop();

    // Get Window Decor View
    final ViewGroup decorView = (ViewGroup) activity.getWindow().getDecorView();

    // Create Header view and then add to Decor View
    mHeaderView = LayoutInflater.from(
            mEnvironmentDelegate.getContextForInflater(activity)).inflate(
            options.headerLayout, decorView, false);
    if (mHeaderView == null) {
        throw new IllegalArgumentException("Must supply valid layout id for header.");
    }
    // Make Header View invisible so it still gets a layout pass
    mHeaderView.setVisibility(View.INVISIBLE);

    // Notify transformer
    mHeaderTransformer.onViewCreated(activity, mHeaderView);

    // Now HeaderView to Activity
    decorView.post(new Runnable() {
        @Override
        public void run() {
            if (decorView.getWindowToken() != null) {
                // The Decor View has a Window Token, so we can add the HeaderView!
                addHeaderViewToActivity(mHeaderView);
            } else {
                // The Decor View doesn't have a Window Token yet, post ourselves again...
                decorView.post(this);
            }
        }
    });
}
 

protected PullToRefreshAttacher(Activity activity, Options options) {
    if (activity == null) {
        throw new IllegalArgumentException("activity cannot be null");
    }
    if (options == null) {
        Log.i(LOG_TAG, "Given null options so using default options.");
        options = new Options();
    }

    mActivity = activity;
    mRefreshableViews = new WeakHashMap<View, ViewDelegate>();

    // Copy necessary values from options
    mRefreshScrollDistance = options.refreshScrollDistance;
    mRefreshOnUp = options.refreshOnUp;
    mRefreshMinimizeDelay = options.refreshMinimizeDelay;
    mRefreshMinimize = options.refreshMinimize;

    // EnvironmentDelegate
    mEnvironmentDelegate = options.environmentDelegate != null
            ? options.environmentDelegate
            : createDefaultEnvironmentDelegate();

    // Header Transformer
    mHeaderTransformer = options.headerTransformer != null
            ? options.headerTransformer
            : createDefaultHeaderTransformer();

    // Get touch slop for use later
    mTouchSlop = ViewConfiguration.get(activity).getScaledTouchSlop();

    // Get Window Decor View
    final ViewGroup decorView = (ViewGroup) activity.getWindow().getDecorView();

    // Create Header view and then add to Decor View
    mHeaderView = LayoutInflater.from(
            mEnvironmentDelegate.getContextForInflater(activity)).inflate(
            options.headerLayout, decorView, false);
    if (mHeaderView == null) {
        throw new IllegalArgumentException("Must supply valid layout id for header.");
    }
    // Make Header View invisible so it still gets a layout pass
    mHeaderView.setVisibility(View.INVISIBLE);

    // Notify transformer
    mHeaderTransformer.onViewCreated(activity, mHeaderView);

    // Now HeaderView to Activity
    decorView.post(new Runnable() {
        @Override
        public void run() {
            if (decorView.getWindowToken() != null) {
                // The Decor View has a Window Token, so we can add the HeaderView!
                addHeaderViewToActivity(mHeaderView);
            } else {
                // The Decor View doesn't have a Window Token yet, post ourselves again...
                decorView.post(this);
            }
        }
    });
}