BlurBehindActivity | 史上最全的Android图片滤镜 可自定义任意效果滤镜 搜索关键字变红,变颜色,指定字段变色 | Android library
kandi X-RAY | BlurBehindActivity Summary
kandi X-RAY | BlurBehindActivity Summary
#这个应用中有多个项目 ##1,仿ios给activity背景设置模糊度 ##2,搜索关键字变红,指定字段变色 ##3,Android图片滤镜,可以自定义任意效果. #一, BlurBehindActivity 仿ios给activity背景设置模糊度,可以设置任意透明度(只需要一行代码简单集成) 安卓模糊背景,半透明背景,任意透明度背景. ##2,完成好第一步就直接使用了 ###比如你从MainActivity跳转到activity2 public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); findViewById(R.id.dummy_button).setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) {. ###MainActivity2 只需要添加下面简单一行代码就可以设置模糊效果(也可以设置任意透明度) public class MainActivity2 extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_blurred);. import android.content.Context; import android.text.Spannable; import android.text.SpannableStringBuilder; import android.text.style.ForegroundColorSpan; import android.util.AttributeSet; import android.widget.TextView;. import java.util.ArrayList; import java.util.List;. //制定字体变色,自定义textview public class MyTextView extends TextView {. 2,使用只需要一行代码就可以完事 public class TextActivity04 extends Activity { private MyTextView textView;. 3,附加布局文件,特别简单 . ##颜色矩阵(ColorMatrix)实现滤镜效果 ###一,知识简介 一张位图可以转换为一个5*4的矩阵,涉及到颜色和透明度。如图1所示。在Android中, 颜色矩阵M是以一维数组m=[a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t]的方式进行存储的。 在一张图片中,图像的RGBA(红色、绿色、蓝色、透明度)值决定了该图片所呈现出来的颜色效果。 要想改变一张图片的颜色效果,只需要改变图像的颜色分量矩阵即可。通过颜色矩阵可以很方便的修改图像的颜色分量矩阵。 由此可见,通过颜色矩阵修改了原图像的RGBA值,从而达到了改变图片颜色效果的目的。 并且,通过如图3所示的运算可知,颜色矩阵M的 第一行参数abcde决定了图像的红色成分, 第二行参数fghij决定了图像的绿色成分, 第三行参数klmno决定了图像的蓝色成分, 第四行参数pqrst决定了图像的透明度, 第五列参数ejot是颜色的偏移量。. ###二,以黑白效果为例(有两种实现方法) 1,用数组矩阵 float[] array = {1, 0, 0, 0, 100, 0, 1, 0, 0, 100, 0, 0, 1, 0, 0, 0, 0, 0, 1, 0}; ColorMatrix colorMatrix = new ColorMatrix(array); 2,把饱和度设置为0 就可以得到黑白的图片 ColorMatrix colorMatrix = new ColorMatrix(); colorMatrix.setSaturation(0);. import android.graphics.Bitmap; import android.graphics.Canvas; import android.graphics.ColorMatrix; import android.graphics.ColorMatrixColorFilter; import android.graphics.Paint;. public class GrayFilter { // 黑白效果函数 public static Bitmap changeToGray(Bitmap bitmap) {.
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Top functions reviewed by kandi - BETA
- Set the specified text to the specified text
- Set the background
- Execute the cacheBlurface task
BlurBehindActivity Key Features
BlurBehindActivity Examples and Code Snippets
Community Discussions
Trending Discussions on Android
QUESTION
I'm unable to store captured image in (getExternalFilesDir(Environment.DIRECTORY_PICTURES)) Android 11 device.
I have added
in manifest and all file access also. But it's not working.
ANSWER
Answered 2021-Jul-31 at 10:25use this code for save captured image
QUESTION
can someone let me know the right usage of populating image resource in Image view using Data Binding
...ANSWER
Answered 2021-Dec-31 at 10:21You can use it in such way:
QUESTION
(Solution has been found, please avoid reading on.)
I am creating a pixel art editor for Android, and as for all pixel art editors, a paint bucket (fill tool) is a must need.
To do this, I did some research on flood fill algorithms online.
I stumbled across the following video which explained how to implement an iterative flood fill algorithm in your code. The code used in the video was JavaScript, but I was easily able to convert the code from the video to Kotlin:
https://www.youtube.com/watch?v=5Bochyn8MMI&t=72s&ab_channel=crayoncode
Here is an excerpt of the JavaScript code from the video:
Converted code:
...ANSWER
Answered 2021-Dec-29 at 08:28I think the performance issue is because of expandToNeighbors
method generates 4 points all the time. It becomes crucial on the border, where you'd better generate 3 (or even 2 on corner) points, so extra point is current position again. So first border point doubles following points count, second one doubles it again (now it's x4) and so on.
If I'm right, you saw not the slow method work, but it was called too often.
QUESTION
I switched from the deprecated GDPR Consent Library to the new User Messaging Platform, and used the code as stated in the documentation.
I noticed that when the user clicks on Manage Options then Confirm choices, ads will stop displaying altogether (Ad failed to load, no ad config), and I can't find anyway to check if the user didn't consent to the use of personal data.
This is problematic as my app relies purely on ads, and I will be losing money if ads don't show up, so I want to make it mandatory for users to consent to the use of their personal data, otherwise the app should be unusable.
I have made a test project on Github so everyone can test this behavior. If you are not using an emulator, then you need to change the "TEST_DEVICE_ID" to yours.
How can I achieve this?
...ANSWER
Answered 2021-Nov-02 at 17:50I found a workaround for this, but this is no final official solution.
It seems that if a user consented to Personalized ads, a string in SharedPreferences
, which key is IABTCF_VendorConsents, will contain ones and zeros corresponding to some vendors (I think). If he didn't consent, this string will be equal to 0.
QUESTION
We have a react-native application running in production with firebase phone auth. Lately, we received feedback from users owning new Huawei devices not being able to authenticate with their phone numbers using firebase.
Since a lot of users started having this issue, we decided to implement Huawei auth services only for devices under HarmonyOS and keep the regular firebase phone authentication for other users.
After integrating the Huawei App Gallery Connect Auth SDK in our react-native app, we are able to receive the OTP and sign the user in using credentialWithVerifyCode
and we are also able to retrieve the user's token using
ANSWER
Answered 2021-Nov-09 at 03:04You are advised to use the following method to validate the token.
QUESTION
I was using def lifecycle_version = "2.3.1"
,
implementation("androidx.lifecycle:lifecycle-viewmodel-ktx:$lifecycle_version")
.
but I had to update version to def lifecycle_version = "2.4.0-alpha03"
to use some features, but ViewModelProvider.Factory
class doesn't work after I use def lifecycle_version = "2.4.0-alpha03"
.
ANSWER
Answered 2021-Nov-09 at 03:38You've written:
QUESTION
On Android 12,
If we open an activity
Go to the home screen of the phone to change the wallpaper
Switch back to our activity, the activity restarts.
It seems it is related to the Material You theming.
I would like to disable the restarting of activity when my app comes to the foreground. Is there a way?
...ANSWER
Answered 2021-Oct-31 at 18:39It is a non-traditional configuration change. By "non-traditional", I mean that it cannot be blocked by android:configChanges
— your activity will be destroyed and recreated whether you like it or not.
If you have Configuration
objects from before and after the change, you can determine that this scenario occurred by calling diff()
on the newer
Configuration
to compare it to the older one:
QUESTION
I create an app from the template, and populate with some Logs as below
...ANSWER
Answered 2021-Nov-05 at 03:21Apparently, it's an Android Studio filtering issue.
I'm having the Tracking
there to filter the log. And it shows multiple log of the same type.
When I remove a character from the log, then the filter get corrected. After putting back the character, the filter is still okay.
See the GIF below.
QUESTION
I'm starting to get errors when I am executing a test for a release variant which was always working fine. The code has always been executed in a Docker container so we can ensure that the build will always be clean.
Today for some reason with no changes at all to the code, I am starting to see errors on the test run:
...ANSWER
Answered 2021-Sep-03 at 11:31I've found the issue and I was able to fix it.
The issue was that one of the external libraries the app depends on has a dependency on androidx.core:core-ktx:+
which meant that was always compiling with the latest version. My app is still working on SDK 28, but the latest version of androidx.core:core-ktx
has the minimal SDK of 31, which resulted in this conflict.
QUESTION
While upload my app in Google playstore I get this error; We've detected this app uses an unsupported version of Play billing. Please upgrade to Billing Library version 3 or newer to publish this app.
Below are the dependencies on my android studio app, which of them is the billing library to change?
...ANSWER
Answered 2021-Sep-10 at 12:03You are using this library for InApp purchasing but this library says we have updated to V3 but Google play store warn about this library that library is not updated to V3 or V4
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install BlurBehindActivity
You can use BlurBehindActivity like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the BlurBehindActivity component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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