android-layout

问题 I'm a little confused about how to determine which phones support what layout types. I've done some research but haven't found a satisfying answer. For example, I've found the below guide: xlarge screens are at least 960dp x 720dp large screens are at least 640dp x 480dp normal screens are at least 470dp x 320dp small screens are at least 426dp x 320dp However, I still have some concerns: Samsung grand (480*800) and HTC wild fire S (320*480) both support MDPI. These screens have very

问题 I'm new on stackoverflow and i want to learn answer this question please dont give me negative reputation. How can i change background color with random time and everytime on android studio ? I'm using kotlin language. var counter:Int =0 if (Random.nextBoolean()) background.setBackgroundColor(Color.GREEN) else background.setBackgroundColor(Color.RED) btn_touch.setOnClickListener { counter += 1 textCounter.text = counter.toString() 回答1: A fun coroutines answer: var loop = true GlobalScope

问题 I have a 2 step question here: 1) How do I display a time slider UI which scrolls horizontally upon touch in a 24-hour format? 2) How do I divide it into a 24 hour format with each slot consisting of a 1 hour slot each? The time slot is divided into hourly increments, such that only 8 hours are visible at a time ( but it's actually a 24 hour time slider which scrolls horizontally) Also, I am planning to make it such that based on the start and end time returned by the JSON I am using, it

问题 I'm looking for a solution to change the color of some Android Material Components layout objects. How can I change the color of text or borders in a Material Button programmatically? All functions like MaterialButton.setTexColor() do not work. Same thing for the StrokeColor. The change must be made logically, directly from code. No XML styles, colors must be able to change in live, based on values read from a database. Things like these don't work : //renewSetDate is a Material Button Object

问题 I'm looking for a solution to change the color of some Android Material Components layout objects. How can I change the color of text or borders in a Material Button programmatically? All functions like MaterialButton.setTexColor() do not work. Same thing for the StrokeColor. The change must be made logically, directly from code. No XML styles, colors must be able to change in live, based on values read from a database. Things like these don't work : //renewSetDate is a Material Button Object

问题 I'm looking for a solution to change the color of some Android Material Components layout objects. How can I change the color of text or borders in a Material Button programmatically? All functions like MaterialButton.setTexColor() do not work. Same thing for the StrokeColor. The change must be made logically, directly from code. No XML styles, colors must be able to change in live, based on values read from a database. Things like these don't work : //renewSetDate is a Material Button Object

问题 This is my style: <resources> <!-- Base application theme. --> <style name="AppTheme" parent="Theme.MaterialComponents.DayNight"> <!-- Customize your theme here. --> <item name="colorPrimary">@color/colorPrimary</item> <item name="colorPrimaryDark">@color/colorPrimaryDark</item> <item name="colorAccent">@color/colorAccent</item> </style> <style name="AppTheme.NoActionBar"> <item name="windowActionBar">false</item> <item name="windowNoTitle">true</item> </style> <style name="AppTheme

问题 When I try to load a URL in the WebView it only shows a blank screen. If I load https://www.google.com or https://www.facebook.com it is working fine. package com.example.hp.cccapp; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.webkit.WebView; import android.webkit.WebViewClient; public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R

问题 When I try to load a URL in the WebView it only shows a blank screen. If I load https://www.google.com or https://www.facebook.com it is working fine. package com.example.hp.cccapp; import android.support.v7.app.AppCompatActivity; import android.os.Bundle; import android.webkit.WebView; import android.webkit.WebViewClient; public class MainActivity extends AppCompatActivity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R

问题 When placing a container below my bottom navigation, it is partly covered by the gray shadow from the navigation, even after adding content to the container. How do I remove the shadow? 回答1: Use app:elevation="0dp" to hide shadow from from bottom navigation <android.support.design.widget.BottomNavigationView android:id="@+id/bottom_navigation" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_alignParentBottom="true" android:background="@android:color