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78 lines
2.3 KiB
78 lines
2.3 KiB
6 years ago
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---
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layout: page
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title: "More features"
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subtitle: "Undocumented features & more"
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category: docs
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order: 11
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date: 2018-12-20 20:41:20
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---
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### Extra controls
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```xml
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<com.otaliastudios.cameraview.CameraView
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app:cameraPlaySounds="true|false"
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app:cameraGrid="off|draw3x3|draw4x4|drawPhi"
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app:cameraGridColor="@color/black"/>
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```
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#### cameraPlaySounds
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Controls whether we should play platform-provided sounds during certain events
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(shutter click, focus completed). Please note that:
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- on API < 16, this flag is always set to `false`
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- the Camera1 engine will always play shutter sounds regardless of this flag
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Defaults to true.
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```java
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cameraView.setPlaySounds(true);
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cameraView.setPlaySounds(false);
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```
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#### cameraGrid
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Lets you draw grids over the camera preview. Supported values are `off`, `draw3x3` and `draw4x4`
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for regular grids, and `drawPhi` for a grid based on the golden ratio constant, often used in photography.
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Defaults to `OFF`.
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```java
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cameraView.setGrid(Grid.OFF);
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cameraView.setGrid(Grid.DRAW_3X3);
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cameraView.setGrid(Grid.DRAW_4X4);
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cameraView.setGrid(Grid.DRAW_PHI);
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```
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#### cameraGridColor
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Lets you choose the color for grid lines.
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Defaults to a shade of grey.
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```java
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cameraView.setGridColor(Color.WHITE);
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cameraView.setGridColor(Color.BLACK);
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```
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### Undocumented features
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Some features and APIs were not documented in this document, including:
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- `CameraUtils` utilities
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- `CameraOptions` options
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- `CameraView.setLocation` APIs
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For informations, please take a look at the javadocs or the source code.
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|Method|Description|
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|------|-----------|
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|`setZoom(float)`, `getZoom()`|Sets a zoom value, where 0 means camera zoomed out and 1 means zoomed in. No-op if zoom is not supported, or camera not started.|
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|`setExposureCorrection(float)`, `getExposureCorrection()`|Sets exposure compensation EV value, in camera stops. No-op if this is not supported. Should be between the bounds returned by CameraOptions.|
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|`setLocation(Location)`|Sets location data to be appended to picture/video metadata.|
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|`setLocation(double, double)`|Sets latitude and longitude to be appended to picture/video metadata.|
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|`getLocation()`|Retrieves location data previously applied with setLocation().|
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|`startAutoFocus(float, float)`|Starts an autofocus process at the given coordinates, with respect to the view dimensions.|
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