Java ImageView.setAlpha方法代码示例

import android.widget.ImageView; //导入方法依赖的package包/类
@Override
public void transformPage(View view, float position) {

    int pageWidth = view.getWidth();
    ImageView imgView = (ImageView)view.findViewById(R.id.img);
    if (position < -1) { // [-Infinity,-1)
        // This page is way off-screen to the left.
    } else if (position <= 0) { // [-1,0]

        view.setAlpha((1 - MIN_ALPHA) * (1 - Math.abs(position)) + MIN_ALPHA);
        float transX = pageWidth * -position;
        view.setTranslationX(transX);
        float scale = (DEFAULT_SCALE - 1.0f) * (1 - Math.abs(position)) + 1;
        imgView.setScaleX(scale);
        imgView.setScaleY(scale);

    } else if (position <= 1) { // (0,1]
        imgView.setAlpha(1.0f);
        imgView.setScaleX(DEFAULT_SCALE);
        imgView.setScaleY(DEFAULT_SCALE);

    } else { // (1,+Infinity]
        // This page is way off-screen to the right.
    }
}
 

import android.widget.ImageView; //导入方法依赖的package包/类
public static void loadImage(Context context, String url, ImageView imageView) {
    // 夜间模式的处理
    if (SPUtil.getBoolean(Constants.IS_NIGHT_MODE)) {
        imageView.setAlpha(0.2f);
        imageView.setBackgroundColor(Color.BLACK);
    }
    Glide.with(context).load(url).into(imageView);
}
 

import android.widget.ImageView; //导入方法依赖的package包/类
public void doubleTrouble (View myView){

        /* Now we will have one image slide off the screen
        * and another image slide into it's place. Note that one
        * of the images is offscreen in the on create methode below.
        */
        // Define the image views to use.
        ImageView firstPic = (ImageView) findViewById(R.id.imageView2);
        ImageView secondPic = (ImageView) findViewById(R.id.imageView3);
        // Set the alpha (not really needed here, was used in other exercises.
        // Used here to make them "dimmer" at half brightness.
        firstPic.setAlpha(0.5f);
        secondPic.setAlpha(0.5f);
        // Call the translation (movement) and set the duration.
        firstPic.animate().translationXBy(-1000f).setDuration(1500);
        secondPic.animate().translationXBy(-1000f).setDuration(1500);
    }
 

import android.widget.ImageView; //导入方法依赖的package包/类
private void changeTypeButton(Button button, int type) {
    ImageView coins = (ImageView) mViewDetails.findViewById(R.id
            .reward_coins_icon);
    switch (type) {
        case ENABLE_BUTTON:
            coins.setAlpha(1);
            button.setAlpha(1);
            button.setEnabled(true);
            break;
        case DISABLE_BUTTON:
            coins.setAlpha(ALPHA);
            button.setAlpha(ALPHA);
            button.setEnabled(false);
            break;
        default:
            break;
    }
}
 

import android.widget.ImageView; //导入方法依赖的package包/类
@Override
public void setResult(ImageView imageView, LoadTaskItem taskItem) {
    if (DBG) Log.d(TAG, "setResult");
    boolean animate = true;
    if (taskItem.loadObject instanceof ScraperImage) {
        ScraperImage image = (ScraperImage) taskItem.loadObject;
        String file = image.getLargeFile();
        if (file != null && file.equals(lastLoaded)) {
            //!!!animate = false;
            if (DBG) Log.d(TAG, "setResult animate false");
        }
        lastLoaded = file;
    }

    imageView.setImageBitmap(taskItem.result.bitmap);
    if (animate) {
        Log.d(TAG, "   animate backdrop alpha "+mBackgroundAlpha);
        imageView.animate().alpha(mBackgroundAlpha).setDuration(600);
    }
    else {
        Log.d(TAG, "   set backdrop alpha"+mBackgroundAlpha);
        imageView.setAlpha(mBackgroundAlpha);
    }
}
 

import android.widget.ImageView; //导入方法依赖的package包/类
private void updateScanData(List<GlucoseData> trend) {
    if (trend.size() == 0) {
        Toast.makeText(this.getContext(), "No current data available!", Toast.LENGTH_LONG).show();
        return;
    }

    mDataPlotView.findViewById(R.id.scan_data).setVisibility(View.VISIBLE);

    GlucoseData currentGlucose = trend.get(trend.size() - 1);
    TextView tv_currentGlucose = (TextView) mDataPlotView.findViewById(R.id.tv_glucose_current_value);
    tv_currentGlucose.setText(
            String.format(getResources().getString(R.string.glucose_current_value),
            currentGlucose.glucoseString(),
            getDisplayUnit())
    );

    PredictionData predictedGlucose = new PredictionData(trend);

    TextView tv_predictedGlucose = (TextView) mDataPlotView.findViewById(R.id.tv_glucose_prediction);
    tv_predictedGlucose.setText(String.valueOf(predictedGlucose.glucoseData.glucoseString()));
    tv_predictedGlucose.setAlpha((float) min(1, 0.1 + predictedGlucose.confidence()));

    ImageView iv_unit = (ImageView) mDataPlotView.findViewById(R.id.iv_unit);
    if (GLUCOSE_UNIT_IS_MMOL) {
        iv_unit.setImageResource(R.drawable.ic_unit_mmoll);
    } else {
        iv_unit.setImageResource(R.drawable.ic_unit_mgdl);
    }
    iv_unit.setAlpha((float) min(1, 0.1 + predictedGlucose.confidence()));

    ImageView iv_predictionArrow = (ImageView) mDataPlotView.findViewById(R.id.iv_glucose_prediction);

    // rotate trend arrow according to glucose prediction slope
    float rotationDegrees = -90f * max(-1f, min(1f, (float) (predictedGlucose.glucoseSlopeRaw / TREND_UP_DOWN_LIMIT)));
    iv_predictionArrow.setRotation(rotationDegrees);

    // reduce trend arrow visibility according to prediction confidence
    iv_predictionArrow.setAlpha((float) min(1, 0.1 + predictedGlucose.confidence()));
}
 

import android.widget.ImageView; //导入方法依赖的package包/类
private void addTrainToScreen(Rect trainRect) {
    rootView = new FrameLayout(this);
    engineView = addTrain(trainRect, TrainView.ENGINE, rootView);
    for (int i = 0; i < NUMBER_OF_CARS; i++) {
        carsView.add(addTrain(trainRect, TrainView.CAR, rootView));
    }

    rootView.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            fadeOutActivity();
        }
    });

    float iconToWidthFactor = 0.34f;
    ImageView startRoof = new ImageView(this);
    startRoof.setImageResource(R.drawable.long_start_point_roof);
    int trainRectSize = (int) (trainRect.width() * (1f - iconToWidthFactor));
    FrameLayout.LayoutParams lp = new FrameLayout.LayoutParams(trainRectSize, trainRectSize);
    startRoof.setX(trainRect.left + trainRect.width() * iconToWidthFactor / 2 - 15);
    startRoof.setY(trainRect.top + trainRect.width() * iconToWidthFactor / 2);
    rootView.addView(startRoof, lp);

    startRoof.setAlpha(0f);
    startRoof.animate()
            .alpha(1f)
            .setInterpolator(new DecelerateInterpolator())
            .setDuration(500)
            .start();

    setContentView(rootView);
}
 

import android.widget.ImageView; //导入方法依赖的package包/类
/**
 * Load thumbnails for a directory list item.
 * @param uri The URI for the file being represented.
 * @param mimeType The mime type of the file being represented.
 * @param docFlags Flags for the file being represented.
 * @param iconThumb The itemview's thumbnail icon.
 * @param iconMimeBackground
 * @return
 */
public void loadThumbnail(Uri uri, String path, String mimeType, int docFlags, int docIcon,
                          ImageView iconMime, ImageView iconThumb, View iconMimeBackground) {
    boolean cacheHit = false;

    final String docAuthority = uri.getAuthority();
    String docId = DocumentsContract.getDocumentId(uri);
    final boolean supportsThumbnail = (docFlags & Document.FLAG_SUPPORTS_THUMBNAIL) != 0;
    final boolean allowThumbnail = MimePredicate.mimeMatches(MimePredicate.VISUAL_MIMES, mimeType);
    final boolean showThumbnail = supportsThumbnail && allowThumbnail && mThumbnailsEnabled;
    if (showThumbnail) {
        final Bitmap cachedResult = mCache.get(uri);
        if (cachedResult != null) {
            iconThumb.setImageBitmap(cachedResult);
            cacheHit = true;
            iconMimeBackground.setVisibility(View.GONE);
        } else {
            iconThumb.setImageDrawable(null);
            final LoaderTask task = new LoaderTask(uri, path, mimeType, mThumbSize, iconThumb,
                    iconMime, iconMimeBackground);
            iconThumb.setTag(task);
            ProviderExecutor.forAuthority(docAuthority).execute(task);
        }
    }

    if (cacheHit) {
        iconMime.setImageDrawable(null);
        iconMime.setAlpha(0f);
        iconThumb.setAlpha(1f);
    } else {
        // Add a mime icon if the thumbnail is being loaded in the background.
        iconThumb.setImageDrawable(null);
        iconMime.setImageDrawable(getDocumentIcon(mContext, docAuthority, docId, mimeType, docIcon));
        iconMime.setAlpha(1f);
        iconThumb.setAlpha(0f);
    }
}
 

import android.widget.ImageView; //导入方法依赖的package包/类
public RadioButton(int unSelected,int selected,String string) {
	v=inflater.inflate(ID_LAYOUT, null);
	top=(ImageView)v.findViewById(ID_IMAGE_TOP);
	bottom=(ImageView)v.findViewById(ID_IMAGE_BOTTOM);
	text=(TextView)v.findViewById(ID_TEXT);
	news=(TextView)v.findViewById(ID_NEWS);
	
	top.setImageResource(unSelected);
	top.setAlpha(1.0f);
	bottom.setImageResource(selected);
	bottom.setAlpha(0.0f);
	text.setText(string);
	news.setVisibility(INVISIBLE);
	v.setLayoutParams(itemLayoutParams);
}
 

import android.widget.ImageView; //导入方法依赖的package包/类
@Override
public void initView() {
    LogUtil.e("initMain123");
    RecentFragment recentFragment = new RecentFragment();
    ContactsFragment contactsFragment = new ContactsFragment();
    InvitationFragment invitationFragment = new InvitationFragment();
    ShareMessageFragment shareMessageFragment = new ShareMessageFragment();
    mFragments[0] = recentFragment;
    mFragments[1] = contactsFragment;
    mFragments[2] = invitationFragment;
    mFragments[3] = shareMessageFragment;
    container = (DragLayout) findViewById(R.id.drag_container);
    menuDisplay = (RecyclerView) findViewById(R.id.rev_menu_display);
    nick = (TextView) findViewById(R.id.tv_menu_nick);
    signature = (TextView) findViewById(R.id.tv_menu_signature);
    avatar = (RoundAngleImageView) findViewById(R.id.riv_menu_avatar);
    headLayout = (RelativeLayout) findViewById(R.id.rl_menu_head_layout);
    bg = (ImageView) findViewById(R.id.iv_main_bg);
    net = (TextView) findViewById(R.id.tv_main_net);
    weatherCity = (TextView) findViewById(R.id.tv_menu_weather_city);
    weatherTemperature = (TextView) findViewById(R.id.tv_menu_weather_temperature);
    bottomLayout = (LinearLayout) findViewById(R.id.ll_menu_bottom_container);
    bg.setAlpha((float) 0.0);
    menuDisplay.setLayoutManager(new LinearLayoutManager(this));
    menuDisplay.setHasFixedSize(true);
    menuDisplay.setItemAnimator(new DefaultItemAnimator());
    container.setListener(this);
    headLayout.setOnClickListener(this);
    net.setOnClickListener(this);
    bottomLayout.setOnClickListener(this);
    initActionBarView();
}
 

import android.widget.ImageView; //导入方法依赖的package包/类
public void onViewCreated(View v, Bundle save){
    super.onViewCreated(v, save);
    ImageViewSetterConfiguration config = ImageViewSetterConfiguration.Builder.createNew()
            .setUseCache(false)
            .build();
    mApplicationFrameLayout =  ((MainActivity) getActivity()).getGlobalBackdropView();
    mApplicationBackdrop = (ImageView) (((MainActivity) getActivity()).getGlobalBackdropView().findViewById(R.id.backdrop));
    mApplicationBackdrop.setAlpha(0f);
    mBackgroundSetter = new ImageViewSetter(getActivity(), config);
    mHeaderView = LayoutInflater.from(getContext()).inflate(R.layout.browser_item_header_show, null);
    mHeaderView.findViewById(R.id.loading).setVisibility(View.VISIBLE);
    addHeaderView();
}
 

import android.widget.ImageView; //导入方法依赖的package包/类
@Override
public void transformPage(ImageView ivBg, float position, int direction) {
    float mFraction = (float) Math.cos(2 * Math.PI * position);
    if (mFraction < 0)
        mFraction = 0;
        ivBg.setAlpha(mFraction);
}
 

import android.widget.ImageView; //导入方法依赖的package包/类
private void setFirstItemOrNormal(BaseViewHolder helper){

        ImageView ivRename=helper.getView(R.id.iv_edit_folder_rename);
        CheckBox checkBox=helper.getView(R.id.cb_edit_folder);
        RelativeLayout rlRoot=helper.getView(R.id.rl_edit_folder);

        // 第一行(随手记）不可编辑
        if(helper.getLayoutPosition()==0){

            checkBox.setAlpha(0.26F);
            rlRoot.setClickable(false);

        } else {

            ivRename.setAlpha(0.54F);
            ivRename.setClickable(true);

            checkBox.setAlpha(0.87F);
            rlRoot.setClickable(true);

        }
    }
 

import android.widget.ImageView; //导入方法依赖的package包/类
public void addPagerData(PageBean bean, ViewPager viewPager) {
    if (bean != null){
        mCount = bean.datas.size();
        //这里加小圆点
        for (int i = 0; i < mCount; i++) {
            LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
                    ViewGroup.LayoutParams.WRAP_CONTENT,
                    ViewGroup.LayoutParams.WRAP_CONTENT);
            if (i == mCount - 1){ //防止indicator的宽度为wrap_content，放大后被遮盖住的问题
                params.setMargins(mLeftMargin,0,mLeftMargin,0);
            }else{
                params.setMargins(mLeftMargin,0,0,0);
            }

            ImageView imageView = new ImageView(mContext);
        /*    if (mSelector == 0){
            }else {
            }*/
            imageView.setBackgroundResource(mSelector);
            imageView.setLayoutParams(params);
            imageView.setAlpha(mAlpha_min);

            addView(imageView);
        }
    }
    if (bean.openview != null){
        mOpenView = bean.openview;
    }
    if (viewPager != null){
        viewPager.addOnPageChangeListener(this);
    }
}
 

import android.widget.ImageView; //导入方法依赖的package包/类
private void startDragging(Bitmap bm, int x, int y) {
      stopDragging();

      mWindowParams = new WindowManager.LayoutParams();
      mWindowParams.gravity = Gravity.TOP | Gravity.START;
      mWindowParams.x = x;
      mWindowParams.y = y - mDragPoint + mCoordOffset;

      mWindowParams.height = WindowManager.LayoutParams.WRAP_CONTENT;
      mWindowParams.width = WindowManager.LayoutParams.WRAP_CONTENT;
      mWindowParams.flags = WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE
              | WindowManager.LayoutParams.FLAG_NOT_TOUCHABLE
              | WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON
              | WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN
              | WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS;
      mWindowParams.format = PixelFormat.TRANSLUCENT;
      mWindowParams.windowAnimations = 0;

      Context context = getContext();
      ImageView v = new ImageView(context);
      int backGroundColor = context.getResources().getColor(R.color.dragndrop_background);
v.setAlpha((float) 0.7);
      v.setBackgroundColor(backGroundColor);
      v.setImageBitmap(bm);
      mDragBitmap = bm;

      mWindowManager = (WindowManager) context.getSystemService("window");
      mWindowManager.addView(v, mWindowParams);
      mDragView = v;
  }