blocks|key|2326381|text|我使用了这个：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2326382|dependencies+{
++compile+fileTree(dir:+'libs',+include:+['*.jar'])
++testCompile+'junit:junit:4.12'
+compile+'com.android.support:appcompat-v7:23.1.1'
+compile+files('libs/GraphView-4.0.1.jar')
++compile+'com.jjoe64:graphview:4.1.0'
}|code-block|syntax|javascript|2326383|特别是|2326384|compile+'com.jjoe64:graphview:4.1.0'|2326385|这对我很有帮助。|2326386|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

i used this:

<pre><code>dependencies {
 compile fileTree(dir: 'libs', include: ['*.jar'])
 testCompile 'junit:junit:4.12'
 compile 'com.android.support:appcompat-v7:23.1.1'
 compile files('libs/GraphView-4.0.1.jar')
 compile 'com.jjoe64:graphview:4.1.0'
}
</code></pre>

especially 

<pre><code>compile 'com.jjoe64:graphview:4.1.0'
</code></pre>

this helped me.

blocks|key|2313729|text|问题是最新版本GraphView包含了额外的条件-如果canvas处于硬件加速模式：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2313730|GraphView.java+(https://github.com/appsthatmatter/GraphView/commit/0740de3e0a93633f7f168115b96edfdce156b19e)|offset|length|style|BOLD|2313731|public+class+GraphView+extends+View+{

++++...

++++protected+void+drawGraphElements(Canvas+canvas)+{
++++++++//+must+be+in+hardware+accelerated+mode
++++++++if+(android.os.Build.VERSION.SDK_INT+>=+11+&&+!canvas.isHardwareAccelerated())+{
++++++++++++throw+new+IllegalStateException("GraphView+must+be+used+in+hardware+accelerated+mode."+%2B
++++++++++++++++"You+can+use+android:hardwareAccelerated=\"true\"+on+your+activity.+Read+this+for+more+info:"+%2B
++++++++++++++++"https://developer.android.com/guide/topics/graphics/hardware-accel.html");
++++++++}
++++++++...
++++}

++++...
}|code-block|syntax|javascript|2313732|当你创建离屏画布时，它没有硬件加速模式。但是您可以只覆盖Canvas实例的isHardwareAccelerated。使用此解决方法：|2313733|Bitmap+bitmap+=+Bitmap.createBitmap(graphView.getWidth(),+graphView.getHeight(),+Bitmap.Config.ARGB_8888);
Canvas+canvas+=+new+Canvas(bitmap)+{
++++@Override
++++public+boolean+isHardwareAccelerated()+{
++++++++return+true;
++++}
};

//+not+it's+work
graphView.draw(canvas);

//+save+somewhere
bitmap.compress(Bitmap.CompressFormat.JPEG,+100,++new+FileOutputStream(imagePath));|2313734|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/appsthatmatter/GraphView/commit/0740de3e0a93633f7f168115b96edfdce156b19e^0|0|0|E|G|2J|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Y|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|Z|8|@$D|10|E|11|F|G]]|9|@$D|12|E|13|1|14]]|A|$]]|$1|H|3|I|5|J|7|15|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|16|8|@]|9|@]|A|$]]|$1|O|3|P|5|J|7|17|8|@]|9|@]|A|$K|L]]|$1|Q|3|-4|5|6|7|18|8|@]|9|@]|A|$]]]|R|$S|$5|T|U|V|A|$W|X]]]]

The problem is that GraphView in recent version include additional conditions - if canvas in hardware accelerated mode or not:

GraphView.java (<a href="https://github.com/appsthatmatter/GraphView/commit/0740de3e0a93633f7f168115b96edfdce156b19e" rel="nofollow noreferrer">https://github.com/appsthatmatter/GraphView/commit/0740de3e0a93633f7f168115b96edfdce156b19e</a>)

<pre><code>public class GraphView extends View {

 ...

 protected void drawGraphElements(Canvas canvas) {
 // must be in hardware accelerated mode
 if (android.os.Build.VERSION.SDK_INT &gt;= 11 &amp;&amp; !canvas.isHardwareAccelerated()) {
 throw new IllegalStateException("GraphView must be used in hardware accelerated mode." +
 "You can use android:hardwareAccelerated=\"true\" on your activity. Read this for more info:" +
 "https://developer.android.com/guide/topics/graphics/hardware-accel.html");
 }
 ...
 }

 ...
}
</code></pre>

When you create off-screen canvas it doesn't have hardware accelerated mode. But you can just override isHardwareAccelerated for your Canvas instance. Use this workaround:

<pre><code>Bitmap bitmap = Bitmap.createBitmap(graphView.getWidth(), graphView.getHeight(), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap) {
 @Override
 public boolean isHardwareAccelerated() {
 return true;
 }
};

// not it's work
graphView.draw(canvas);

// save somewhere
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, new FileOutputStream(imagePath));
</code></pre>

blocks|key|2322528|text|在最新版本4.2.2中，快照功能正常运行。您可以查看文档和示例项目：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2322529|http://www.android-graphview.org/take-snapshots/|offset|length|2322530|这基本上是API调用：|2322531|//+directly+share+it
graph.takeSnapshotAndShare(mActivity,+"exampleGraph",+"GraphViewSnapshot");

//+get+the+bitmap
Bitmap+bitmap+=+graph.takeSnapshot();|code-block|syntax|javascript|2322532|entityMap|0|LINK|mutability|MUTABLE|url^0|0|0|1C|0|0|0|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|U|8|@]|9|@$D|V|E|W|1|X]]|A|$]]|$1|F|3|G|5|6|7|Y|8|@]|9|@]|A|$]]|$1|H|3|I|5|J|7|Z|8|@]|9|@]|A|$K|L]]|$1|M|3|-4|5|6|7|10|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|C]]]]

In the recent release 4.2.2 the snapshot feature is function properly. You can check out the documentation and the example project:

<a href="http://www.android-graphview.org/take-snapshots/" rel="nofollow noreferrer">http://www.android-graphview.org/take-snapshots/</a>

This are basically the API calls:

<pre><code>// directly share it
graph.takeSnapshotAndShare(mActivity, "exampleGraph", "GraphViewSnapshot");

// get the bitmap
Bitmap bitmap = graph.takeSnapshot();
</code></pre>

I'm trying to take snapshot of the GraphView but it gives an error "GraphView must be used in hardware accelerated mode."
I'm using the following code to take snapshot

<pre><code>Bitmap bitmap = Bitmap.createBitmap(view.getWidth(), view.getHeight(), Bitmap.Config.ARGB_8888); 
Canvas canvas = new Canvas(bitmap); 
view.draw(canvas);
</code></pre>

Also, i've already set <code>android:hardwareAccelerated="true"</code> at application level.

Getting IllegalStateException when trying to take snapshot of the graph for https://github.com/appsthatmatter/GraphView

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我正在尝试拍摄GraphView的快照，但出现错误"GraphView必须在硬件加速模式下使用“。我使用下面的代码来拍摄快照Bitmap bitmap = Bitmap.createBitmap(view.getWidth(), view.getHeight(), Bitmap.Config.ARGB_8888); C...

问在尝试为https://github.com/appsthatmatter/GraphView拍摄图形快照时获取IllegalStateException
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问在尝试为https://github.com/appsthatmatter/GraphView拍摄图形快照时获取IllegalStateExceptionEN