android.graphics.Picture not being drawn in API 14+

When i change the targetAPI in the manifest from 13 to 14 (or higher) the Picture no longer work. No matter what or how.

当我将清单中的targetAPI从13更改为14（或更高）时，Picture不再有效。无论如何或如何。

Example

例

    Paint bluepaint = new Paint();
    bluepaint.setColor(Color.BLUE);

    Picture pic = new Picture();
        Canvas testcanvas = pic.beginRecording(300, 300);
        testcanvas.drawColor(Color.BLUE);
    pic.endRecording();

    canvas.drawColor(Color.RED);
    canvas.drawLine(0, 0, 480, 480, bluepaint);

    canvas.drawPicture(pic);

This should draw a blue screen from the pic, it does so in API 13 and lower. It does NOT draw the blue but only the red from the pure canvas.draw call.

这应该从图片中绘制一个蓝色屏幕，它在API 13和更低版本中这样做。它不会绘制蓝色，只会绘制纯canvas.draw调用中的红色。

I can't see any change from API 13 to 14 that would explain this.

我无法看到API 13到14的任何变化可以解释这一点。

However i am using cyanogenmod on a Galaxy S2 (so i can run 4.3), not sure if they change native stuff on cyanogen, switched to it couple of weeks ago.

然而，我在Galaxy S2上使用cyanogenmod（所以我可以运行4.3），不确定他们是否会改变氰基上的原生物，几周前改用它。

Any idea where to look for answers or what could cause this ?

知道在哪里寻找答案或可能导致这种情况的原因是什么？

edit

编辑

working

加工

<uses-sdk
    android:minSdkVersion="10"
    android:targetSdkVersion="13" />

NOT working

不工作

<uses-sdk
    android:minSdkVersion="10"
    android:targetSdkVersion="14" />

2 个解决方案

#1

If targetSdkVersion is 14 (Ice Cream Sandwich) or higher then hardware acceleration is enabled by default for the whole app. Unfortunately Canvas.drawPicture() is not supported if hardware acceleration is enabled.

如果targetSdkVersion为14（冰淇淋三明治）或更高，则默认情况下会为整个应用启用硬件加速。不幸的是，如果启用了硬件加速，则不支持Canvas.drawPicture（）。

There are two way to fix this:

有两种方法可以解决这个问题：

Add android:hardwareAccelerated="false" to the application tag in your AndroidManifest.xml. This will disable hardware acceleration for your whole app.

将android：hardwareAccelerated =“false”添加到AndroidManifest.xml中的应用程序标记。这将禁用整个应用程序的硬件加速。
You can use Bitmap and Canvas.drawBitmap() which is supported with hardware acceleration.

您可以使用硬件加速支持的Bitmap和Canvas.drawBitmap（）。

Reference: http://developer.android.com/guide/topics/graphics/hardware-accel.html

参考：http：//developer.android.com/guide/topics/graphics/hardware-accel.html

#2

-1

Use these dependency ... here 26.0.2 is a bug and Version 14 is not supportable. give these dependency:-

使用这些依赖...这里26.0.2是一个错误，版本14是不可支持的。给出这些依赖： -

dependencies {
    implementation fileTree(include: ['*.jar'], dir: 'libs')

    implementation 'com.android.support:appcompat-v7:27.1.1'
    implementation 'com.android.support.constraint:constraint-layout:1.0.2'
    implementation 'com.android.support:design:27.1.1'

    compile 'com.android.support:support-v4:27.1.1'

and Make SDK version:-

并制作SDK版本： -

android {
    compileSdkVersion 27  
    defaultConfig {
        applicationId "com.example.yeshveer.mygraphics"
        minSdkVersion 21
        targetSdkVersion 26
        versionCode 1
        versionName "1.0"}

But you can try once with dependency without change SDK version.

但是您可以尝试使用依赖而无需更改SDK版本。

and Remember canvas.restore(); dont use

并记住canvas.restore（）;不要用

#1