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Android MeasureSpec的理解和源碼的解析_Android_腳本之家

* 關(guān)于MeasureSpec的理解 * * (1) MeasureSpec基礎(chǔ)知識(shí) * MeasureSpec通常翻譯為"測(cè)量規(guī)格",它是一個(gè)32位的int數(shù)據(jù). * 其中高2位代表SpecMode即某種測(cè)量模式,低32位為SpecSize代表在該模式下的規(guī)格大小. * 可以通過(guò): * int specMode = MeasureSpec.getMode(measure
www.dbjr.com.cn/article/1228...htm 2025-5-29

Android視圖控件架構(gòu)分析之View、ViewGroup_Android_腳本之家

protectedvoidonMeasure(intwidthMeasureSpec,intheightMeasureSpec) { // 調(diào)用父類的onMeasure() super.onMeasure(measureWidth(widthMeasureSpec), measureHeight(heightMeasureSpec)); // 或者直接調(diào)用父類的setMeasuredDimension(),因?yàn)楦割惖膐nMeasure()最終調(diào)用了setMeasuredDimension() // setMeasuredDimension(measureWidth(...
www.dbjr.com.cn/article/837...htm 2025-5-29

Android實(shí)現(xiàn)IM多人員組合的群組頭像_Android_腳本之家

protectedvoidonMeasure(intwidthMeasureSpec,intheightMeasureSpec) { mWidth = getWidth(widthMeasureSpec); mHeight = getHeight(heightMeasureSpec); setMeasuredDimension(mWidth, mHeight); } privateintgetWidth(intmeasureSpec) { intwidth = MIN_WIDTH_AND_HEIGHT; intspecMode = MeasureSpec.getMode(measureSpec);...
www.dbjr.com.cn/article/1498...htm 2025-5-17

Android之ScrollView嵌套ListView和GridView沖突的解決方法_Android...

protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { if (haveScrollbars == false) { int expandSpec = MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2, MeasureSpec.AT_MOST); super.onMeasure(widthMeasureSpec, expandSpec); } else { super.onMeasure(widthMeasureSpec, heightMeasure...
www.dbjr.com.cn/article/410...htm 2025-5-18

Android 兩個(gè)ViewPager的聯(lián)動(dòng)效果的實(shí)現(xiàn)_Android_腳本之家

child.measure(widthMeasureSpec, MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED)); inth = child.getMeasuredHeight(); height = h; } heightMeasureSpec = MeasureSpec.makeMeasureSpec(height, MeasureSpec.EXACTLY); super.onMeasure(widthMeasureSpec, heightMeasureSpec); ...
www.dbjr.com.cn/article/1448...htm 2025-5-20

Android開發(fā)之實(shí)現(xiàn)GridView支付寶九宮格_Android_腳本之家

MeasureSpec.AT_MOST); super.onMeasure(widthMeasureSpec, expandSpec); } } 接下來(lái),我們就定義一個(gè)帶分割線的選擇器,具體代碼是: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 <?xml version="1.0"encoding="utf-8"?> <item android:state_pressed="true"><shape android:shape="rectangle"> <...
www.dbjr.com.cn/article/749...htm 2025-6-8

Android 根據(jù)手勢(shì)頂部View自動(dòng)展示與隱藏效果_Android_腳本之家

viewBottom.measure(MeasureSpec.makeMeasureSpec(width, MeasureSpec.EXACTLY), MeasureSpec.makeMeasureSpec(height, MeasureSpec.EXACTLY)); setMeasuredDimension(width, height); } @Override protectedvoidonLayout(booleanchanged,intl,intt,intr,intb) { inttopHeight = viewTop.getMeasuredHeight(); ...
www.dbjr.com.cn/article/1216...htm 2025-5-19

Android自定義View實(shí)現(xiàn)帶音效和震動(dòng)的SeekBar_Android_腳本之家

protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { mWidth = calculateSize(true, widthMeasureSpec); mHeight = calculateSize(false, heightMeasureSpec); mHalfWidth = mWidth >> 1; if (mWidthRangeNumber == 0) { mWidthRangeNumber = (int) (mWidth / gradationGap * mNumberUn...
www.dbjr.com.cn/program/318427e...htm 2025-5-31

Android 實(shí)現(xiàn)帶字母索引的側(cè)邊欄功能_Android_腳本之家

case MeasureSpec.EXACTLY: { return widthSize; } case MeasureSpec.UNSPECIFIED: default: return DEFAULT_WIDTH; } } @Override public boolean dispatchTouchEvent(MotionEvent event) { switch (event.getAction()) { case MotionEvent.ACTION_DOWN: hit = true; onHit(event.getY()); break; case MotionEvent...
www.dbjr.com.cn/article/1216...htm 2025-5-31

Android自定義View繪制貝塞爾曲線實(shí)現(xiàn)流程_Android_腳本之家

MeasureSpec.getSize(measureSpec) } else { defaultSize } } override fun onDraw(canvas: Canvas) { super.onDraw(canvas) //裁剪畫布為圓形 cutCanvas(canvas) //繪制圓形 drawRound(canvas) //繪制波浪 drawWave(canvas) //自動(dòng)增長(zhǎng)進(jìn)度 autoGrow() } //進(jìn)度從0-100,自動(dòng)增長(zhǎng) private fun autoGrow() {...
www.dbjr.com.cn/article/2663...htm 2025-6-4