如何解决捕获布局并将其另存为图像
我下面有以下代码,我想在单击按钮时捕获“ @ + id / layout_capture” 并保存为图像。 。 我已经尝试过this,但是无法使用我的代码
<?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"
android:gravity="center"
android:orientation="vertical"
tools:context=".MainActivity">
<LinearLayout
android:id="@+id/layout_capture"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_gravity="center"
android:gravity="center_horizontal"
android:background="#AFA4BF"
android:padding="10dp"
>
<ImageView
android:id="@+id/noaman_1"
android:layout_width="89dp"
android:layout_height="89dp"
android:src="@drawable/ic_launcher_foreground"
android:background="@drawable/ic_launcher_background"
/>
<!-- First Semister Result -->
<TextView
android:id="@+id/first_semis1"
android:layout_width="180dp"
android:layout_height="24dp"
android:layout_marginTop="20dp"
android:text="@string/first_semis"
android:textAppearance="@style/first_semis"
android:gravity="center_horizontal|top"
/>
<TextView
android:id="@+id/first_semis2"
android:layout_width="180dp"
android:layout_height="24dp"
android:text="@string/first_semis"
android:textAppearance="@style/first_semis"
android:gravity="center_horizontal|top"
/>
</LinearLayout>
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/first_semis"
/>
</LinearLayout>
这是屏幕内容
以及捕获后的情况
感谢您的光临❤
解决方法
我已经复制了您的layout.xml文件,并简单地将onClick Action添加到了代码中:
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/first_semis"
android:onClick="capture"
/>
我在您的链接中使用了代码,它确实运行良好:
这是我的MainActivity.java文件:
package com.example.androidlayout;
import androidx.appcompat.app.AppCompatActivity;
import android.content.res.Configuration;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.drawable.Drawable;
import android.os.Bundle;
import android.provider.MediaStore;
import android.view.View;
import android.widget.LinearLayout;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void capture(View view){
Bitmap photo = getBitmapFromView((LinearLayout) findViewById(R.id.layout_capture));
String savedImageURL = MediaStore.Images.Media.insertImage(
getContentResolver(),photo,"your_layout","image"
);
}
public static Bitmap getBitmapFromView(View view) {
//Define a bitmap with the same size as the view
Bitmap returnedBitmap = Bitmap.createBitmap(view.getWidth(),view.getHeight(),Bitmap.Config.ARGB_8888);
//Bind a canvas to it
Canvas canvas = new Canvas(returnedBitmap);
//Get the view's background
Drawable bgDrawable =view.getBackground();
if (bgDrawable!=null)
//has background drawable,then draw it on the canvas
bgDrawable.draw(canvas);
else
//does not have background drawable,then draw white background on the canvas
canvas.drawColor(Color.WHITE);
// draw the view on the canvas
view.draw(canvas);
//return the bitmap
return returnedBitmap;
}
}
它将图像保存到您的画廊。
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