This page (revision-1) was last changed on 20-Apr-2024 11:53 by Hiroaki Tateshita

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Version Date Modified Size Author Changes ... Change note
20-Apr-2024 11:53 1 KB Hiroaki Tateshita

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Android Camera
Android Camera

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At line 1 added 29 lines
[{PageViewPlugin}]
[Android Programming Tips]
!!!Abstract
!!!Topic
*Camera2
|Androidでちゃんとカメラが扱えるようになりたいが、結構奥が深い。camera2を使いたいが、サンプルとしてこれ[4]がシンプル。このサンプルで、TextureView.getSurfaceTexture()を呼ぶとき、NullPointerExceptionが起きやすい。Availableになってから呼ばないといけないので、呼び出し元をListenerのonSurfaceTextureAvailable()から呼ぶ必要があることに注意[5]。
*ViewからBitmap？
|TextureViewだったら
{{{
mTextureView.getBitmap();
}}}
|で、ただのViewだったら、
{{{
arView.getDrawingCache(false);
}}}
|でBitmapが取れる。
*Bitmapを重ねるには
|Canvasクラスをつかって重ね書きしましょう。
{{{
Bitmap offBitmap = Bitmap.createBitmap(cameraMap.getWidth(), cameraMap.getHeight(), Bitmap.Config.ARGB_8888);
Canvas canvasForCombine = new Canvas(offBitmap);
canvasForCombine.drawBitmap(cameraMap, null, new Rect(0, 0, cameraMap.getWidth(), cameraMap.getHeight()), null);
canvasForCombine.drawBitmap(overlayMap, null, new Rect(0, 0, cameraMap.getWidth(), cameraMap.getHeight()), null);
}}}
!!!Reference
#[#4]株式会社BELLSOFT, 2018年4月13日, Androidアプリにおける最小限のカメラ機能の実装, [https://bellsoft.jp/blog/system/detail_538]
#[#5]TextureView, [https://developer.android.com/reference/android/view/TextureView]
This page (revision-) was last changed on 20-Apr-2024 11:53 by Hiroaki TateshitaTop