I try to switch pages using custom controls. I read this tutorial: composite controls now I use a Cardview and LinearLayout to put the button in it, but I can t do it. so I followed this tutorial: put the code to dynamically add page fragments ...
problem description if the onResume event of the second page is triggered when the first page is opened, the onResume of the third page will trigger the fragment. The life cycle of the fragment is onAttach ()-> onCreate ()-> onCreateView ()-> onActivi...
I don t know how to start the title. < ( ^ ) > how can input, in document fragments created by document.createDocumentFragment modify the content in input through JavaScript? if you modify it directly through the value property, the prompt "Pleas...
pages made with fragment+recyclerview+glide+cradview, in which the pictures of recyclerview cannot be filled up after they are transferred to the screen. cardview, when this is a landscape screen, the picture is only centered, not full of cardview. ...
simpleadapter is called in the fragment tabhost tab of Androidstudio. where item.setAdapter (simpleAdapter) reported null pointer error? ...
in practice, follow the br that the book knocks out step by step. call the replace method here to create an anonymous inner class. Ide has this error. this method is contained in the following class . class MyOnCheckedChangListener implements R...
1. I want to automatically run the go language by pressing F5, but I still can t OK? after searching the data. so seek the truth, do not know how to configure and debug ~ 2, I want to use vscode to debug go, but do not know how to play tools, read th...
always prompts openssl_sign (): supplied key param cannot be coerced into a private key. I changed the system and the local computer is WIN7, not even under the linux system? someone on the network said that in the sandbox, the private key needs to be ...
these two are the same route, but one has parameters and the other does not <ng-container *ngFor="let item of menu"> <li *ngIf="!item.son&&item.action_type < 3" nz-menu-item [nzSelected]="isMe...
Syntax scss .a { background-color :red; &.b{ background-color: green; } &-c{ background-color: blue; } .d{ background-color: yellow; } } ab c d b <div class="a b"> < div> <div class=...
1. Notes printed by Bluetooth printer are garbled in Chinese 2. 3. ...