Edward Lance Lorilla

【Android 】full screen display effect of clicking pictures

package com.example.explosioneffect;


import androidx.appcompat.app.AppCompatActivity;

import android.annotation.SuppressLint;
import android.app.Dialog;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.View;
import android.view.ViewGroup;
import android.view.WindowManager;
import android.widget.ImageView;
import android.widget.RelativeLayout;

import java.io.InputStream;

public class MainActivity extends AppCompatActivity {
    private ImageView imageView;
    private Dialog dialog;
    private ImageView image;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        init();
        //Click event of small picture (pop up big picture)
        imageView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                dialog.show();
            }
        });
    }

    private void init() {
        imageView = (ImageView) findViewById(R.id.image);
        //The big picture displayed on the dialog
        dialog = new Dialog(MainActivity.this, R.style.FullActivity);
        WindowManager.LayoutParams attributes = getWindow().getAttributes();
        attributes.width = WindowManager.LayoutParams.MATCH_PARENT;
        attributes.height = WindowManager.LayoutParams.MATCH_PARENT;
        dialog.getWindow().setAttributes(attributes);
        image = getImageView();
        dialog.setContentView(image);
        //The click event of the big picture (click to make him disappear)
        image.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                dialog.dismiss();
            }
        });
    }

    //Dynamic ImageView
    private ImageView getImageView() {
        ImageView imageView = new ImageView(this);
        //Width Height
        imageView.setLayoutParams(new RelativeLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT));
        //imageView set picture
        @SuppressLint("ResourceType") InputStream is = getResources().openRawResource(R.drawable.ic_launcher_background);
        Drawable drawable = BitmapDrawable.createFromStream(is, null);
        imageView.setImageDrawable(drawable);
        return imageView;
    }
}

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">
<ImageView
    android:id="@+id/image"
    android:src="@drawable/ic_launcher_background"
    android:layout_centerInParent="true"
    android:layout_width="200dp"
    android:layout_height="200dp" />
</LinearLayout>

<resources>

    <!-- Base application theme. -->
    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
        <!-- 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="FullActivity" parent="AppTheme">
    <item name="windowNoTitle">true</item>
    <item name="android:windowFullscreen">true</item>item>
</style>
</resources>

【C#】 WPF realizes the effect of flashing background lights with the mouse

<Window x:Class="FlashingEffect.MainWindow"

xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"

xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"

xmlns:d="http://schemas.microsoft.com/expression/blend/2008"

xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"

xmlns:local="clr-namespace:FlashingEffect"

mc:Ignorable="d"

Title="MainWindow" Height="450" Width="800">

<Grid>

</Grid>

</Window>

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.Windows;

using System.Windows.Controls;

using System.Windows.Data;

using System.Windows.Documents;

using System.Windows.Input;

using System.Windows.Media;

using System.Windows.Media.Imaging;

using System.Windows.Navigation;

using System.Windows.Shapes;

namespace FlashingEffect

{

/// <summary>

/// Interaction logic for MainWindow.xaml

/// </summary>

public partial class MainWindow : Window

{

private Point lastMousePosition = new Point(0, 0);//Mouse position

private int triangleLength = 100;//Triangle side length

public MainWindow()

{

InitializeComponent();

this.Loaded += MainWindow_Loaded;

CompositionTarget.Rendering += UpdateTriangle;

this.container.PreviewMouseMove += UpdateLastMousePosition;

}

private void MainWindow_Loaded(object sender, RoutedEventArgs e)

{

//Easily divide the rectangle into combined triangles

int horizontalCount = (int)(this.container.ActualWidth / triangleLength);

int verticalCount = (int)(this.container.ActualHeight / triangleLength);

for (int i = 0; i < horizontalCount; i++)

{

for (int j = 0; j < verticalCount; j++)

{

Path trianglePath1 = new Path();

var g1 = new StreamGeometry();

using (StreamGeometryContext context = g1.Open())

{

context.BeginFigure(new Point(i * triangleLength, j * triangleLength), true, true);

context.LineTo(new Point(i * triangleLength, (j + 1) * triangleLength), true, false);

context.LineTo(new Point((i + 1) * triangleLength, (j + 1) * triangleLength), true, false);

}

trianglePath1.Data = g1;

trianglePath1.Fill = new SolidColorBrush(Color.FromArgb(255, 247, 18, 65));

this.container.Children.Add(trianglePath1);

Path trianglePath2 = new Path();

var g2 = new StreamGeometry();

using (StreamGeometryContext context = g2.Open())

{

context.BeginFigure(new Point(i * triangleLength, j * triangleLength), true, true);

context.LineTo(new Point((i + 1) * triangleLength, j * triangleLength), true, false);

context.LineTo(new Point((i + 1) * triangleLength, (j + 1) * triangleLength), true, false);

}

trianglePath2.Data = g2;

trianglePath2.Fill = new SolidColorBrush(Color.FromArgb(255, 247, 18, 65));

this.container.Children.Add(trianglePath2);

}

private void UpdateTriangle(object sender, EventArgs e)

{

//Get child controls

List<Path> childList = GetChildObjects<Path>(this.container);

for (int i = 0; i < childList.Count; i++)

{

for (int j = 1; j < childList.Count; j++)

{

string si = childList[i].Data.ToString();

string si1 = MidStrEx(si, "M", "L");

string si2 = MidStrEx(si, "L", " ");

string si3 = MidStrEx(si, " ", "z");

string sj = childList[j].Data.ToString();

string sj1 = MidStrEx(sj, "M", "L");

string sj2 = MidStrEx(sj, "L", " ");

string sj3 = MidStrEx(sj, " ", "z");

//Left and right triangle judgment

if (si1 == sj1 && si3 == sj3)

{

double x = childList[i].Data.Bounds.X + (1 - Math.Pow(2, 0.5) / 2) * triangleLength - lastMousePosition.X;

double y = childList[i].Data.Bounds.Y + (1 - Math.Pow(2, 0.5) / 2) * triangleLength - lastMousePosition.Y;

double rRadio = 1 - Math.Pow(x * x + y * y, 0.5) / Math.Pow(this.container.ActualWidth * this.container.ActualWidth + this.container.ActualHeight * this.container.ActualHeight, 0.5);

childList[j].Fill = new SolidColorBrush(Color.FromArgb((byte)(255 * rRadio), 247, 18, 65));

x = childList[j].Data.Bounds.TopRight.X - (1 - Math.Pow(2, 0.5) / 2) * triangleLength - lastMousePosition.X;

rRadio = 1 - Math.Pow(x * x + y * y, 0.5) / Math.Pow(this.container.ActualWidth * this.container.ActualWidth + this.container.ActualHeight * this.container.ActualHeight, 0.5);

childList[i].Fill = new SolidColorBrush(Color.FromArgb((byte)(255 * rRadio), 247, 18, 65));

break;

}

private void UpdateLastMousePosition(object sender, MouseEventArgs e)

{

lastMousePosition = e.GetPosition(this.container);

}

private List<T> GetChildObjects<T>(System.Windows.DependencyObject obj) where T : System.Windows.FrameworkElement

{

System.Windows.DependencyObject child = null;

List<T> childList = new List<T>();

for (int i = 0; i < VisualTreeHelper.GetChildrenCount(obj); i++)

{

child = VisualTreeHelper.GetChild(obj, i);

if (child is T)

{

childList.Add((T)child);

}

childList.AddRange(GetChildObjects<T>(child));

}

return childList;

}

public static string MidStrEx(string sourse, string startstr, string endstr)

{

string result = string.Empty;

int startindex, endindex;

try

{

startindex = sourse.IndexOf(startstr);

if (startindex == -1)

return result;

string tmpstr = sourse.Substring(startindex + startstr.Length);

endindex = tmpstr.IndexOf(endstr);

if (endindex == -1)

return result;

result = tmpstr.Remove(endindex);

}

catch (Exception ex)

{

}

return result;

}

Edward Lance Lorilla

【Android 】full screen display effect of clicking pictures

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