Screenshot

package com.gordonlu.screenshot;

import android.app.Activity;

import android.content.Context;

import com.google.appinventor.components.annotations.*;

import com.google.appinventor.components.common.ComponentCategory;

import com.google.appinventor.components.runtime.AndroidNonvisibleComponent;

import com.google.appinventor.components.runtime.ComponentContainer;

import com.google.appinventor.components.runtime.EventDispatcher;

import com.google.appinventor.components.runtime.AndroidViewComponent;

import android.view.View;

import android.graphics.Bitmap;

import java.io.FileOutputStream;

import android.graphics.Bitmap.CompressFormat;

import android.content.pm.PackageManager;

import android.os.Environment;

import java.io.File;

import java.lang.Enum;

@DesignerComponent(

version = 2,

description = "A non-visible extension to take screenshots.",

category = ComponentCategory.EXTENSION,

nonVisible = true,

iconName = "https://docs.google.com/drawings/d/e/2PACX-1vQCI87PHLBF0jb8QWyYmIRQSjjNW3EFXf-qpsWCvBYkUQ9vEgPAB8SpxcMpblxNpbIYrjCjLrRLIU2c/pub?w=16&h=16")

@SimpleObject(external = true)

//Libraries

@UsesLibraries(libraries = "")

//Permissions

@UsesPermissions(permissionNames = "")

public class Screenshot extends AndroidNonvisibleComponent {

//Activity and Context

private Context context;

private Activity activity;

public Screenshot(ComponentContainer container){

super(container.$form());

this.activity = container.$context();

this.context = container.$context();

}

@SimpleFunction(description = "Takes a screenshot of the current app, with the given quality, compressFormat and saves the screenshot as the given path.")

public void TakeScreenshot(int quality, String compressFormat, String path) {

try {

String mPath = path;

CompressFormat cp = CompressFormat.JPEG;

if (compressFormat == "PNG") {

cp = CompressFormat.PNG;

} else if (compressFormat == "WEBP") {

cp = CompressFormat.WEBP;

}

View v1 = activity.getWindow().getDecorView().getRootView();

v1.setDrawingCacheEnabled(true);

Bitmap bitmap = Bitmap.createBitmap(v1.getDrawingCache());

v1.setDrawingCacheEnabled(false);

File imageFile = new File(mPath);

FileOutputStream outputStream = new FileOutputStream(imageFile);

bitmap.compress(cp, quality, new FileOutputStream(path));

SavedScreenshot(imageFile.toString());

outputStream.flush();

outputStream.close();

}

catch(Throwable e) {

Failed(e.getMessage());

}

}

@SimpleProperty(description = "A compress format block.")

public String Jpeg() {

return "JPEG";

}

@SimpleProperty(description = "A compress format block.")

public String Png() {

return "PNG";

}

@SimpleProperty(description = "A compress format block. This block will only work for devices smaller than Android 10.")

public String Webp() {

return "WEBP";

}

@SimpleEvent(description = "This event is fired when the extension has failed to take the screenshot.")

public void Failed (String error) {

EventDispatcher.dispatchEvent(this, "Failed", error);

}

@SimpleEvent(description = "This event is fired when the extension has taken the screenshot in the given path.")

public void SavedScreenshot (String path) {

EventDispatcher.dispatchEvent(this, "SavedScreenshot", path);

}

@SimpleFunction(description = "Returns whether the application has the write permission. This is mandatory if you use this extension.")

public boolean IsWritePermissionGranted() {

String permission = android.Manifest.permission.WRITE_EXTERNAL_STORAGE;

int res = context.checkCallingOrSelfPermission(permission);

return (res == PackageManager.PERMISSION_GRANTED);

}

@SimpleFunction(description = "Returns an absolute path of the application specific directory of this app.")

public String ApplicationSpecificDirectory() {

String pkgName = context.getPackageName();

return "/storage/emulated/0/Android/data/" + pkgName + "/files/";

}

}