IP属地：广东
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onTouchEvent源码解析
源码解析public boolean onTouchEvent(MotionEvent event) {final float x = even...
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java.lang.IllegalArgumentException: No view found for id 0x7f1108ca原始崩溃信息: java.lang.IllegalArgumentException: No view found for id 0x7f110...
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EditText hint支持图标
兼容21及以下版本 fun EditText.setHintImageSpan(hintTips: String?, drawable: Int...
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RecyclerView嵌套滚动
实现方案 父View不拦截事件，并实现NestedScrollingParent2接口。上滑时父view优先处理滑动，下滑时子view优先处理滑...
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协程线程问题
情况一 lifecycleScope.launch(Dispatchers.IO){ delay(5000) click.text ="...
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6.0运行时权限与targetSdkVersion选择
Android6.0普通权限normal permission 和 危险权限dangerous permission NormalPermiss...
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协程原理
welcome to the co-routines codelab ,in this codelab you will learn the b...
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textview跑马灯
宽度要写死，不然不跑 class MarqueeTextView(context: Context, attr: AttributeSet) :...