[英]Get android device camera resolution
我正在嘗試使用帶有StreamConfigurationMap getOutputSizes(ImageFormat.RAW_SENSOR)[0]的android.hardware.camera2中的CameraManager來獲取設備相機的最大分辨率。 它正在使用API的22和24但不超過25+。 在較新的Android版本上獲得最大相機分辨率的方法是什么?
CameraManager manager = (CameraManager) getActivity().getSystemService(CAMERA_SERVICE);
try {
for (String cameraId : manager.getCameraIdList()) {
CameraCharacteristics chars = manager.getCameraCharacteristics(cameraId);
StreamConfigurationMap streamConfigurationMap = chars.get(
CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP);
//Log.d(TAG, "onCreate: " + (streamConfigurationMap.getOutputSizes(ImageFormat.RAW_SENSOR)[0]));
String mp = streamConfigurationMap.getOutputSizes(ImageFormat.RAW_SENSOR)[0].toString();
String[] mpX = mp.split("x");
float x = Float.parseFloat(mpX[0]);
float y = Float.parseFloat(mpX[1]);
double xy = (double) (x * y) / 1000000;
Log.d(TAG, "onCreate:" + Math.round(xy * 100.0) / 100.0); // here i get resolution in megapixels
}
} catch (CameraAccessException e) {
e.printStackTrace();
} catch (NullPointerException e) {
e.printStackTrace();
}
如果我使用
ImageFormat.JPG
它給了我一些價值,但它們不是相機分辨率。
試試這樣吧。
CameraManager cameraManager = (CameraManager) getContext().getSystemService(Context.CAMERA_SERVICE);
for (final String cameraId : cameraManager.getCameraIdList()) {
CameraCharacteristics cameraCharacteristics = cameraManager.getCameraCharacteristics(cameraId);
StreamConfigurationMap streamConfigurationMap = cameraCharacteristics.get(CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP);
Size[] sizes = streamConfigurationMap.getOutputSizes(ImageFormat.RAW_SENSOR);
Log.d(TAG, "onCreate:" + getCameraMP(sizes);
}
private String getCameraMP(Size[] size) {
String finalCameraRes = getMP(size[0], 1);
int maxSize = size[0].getHeight() * size[0].getWidth();
for (Size camSize : size) {
int tempMax = camSize.getHeight() * camSize.getWidth();
if (tempMax > maxSize) {
maxSize = tempMax;
finalCameraRes = getMP(camSize, 1);
}
}
return finalCameraRes;
}
private String getMP(Size size, int decimalPlaces) {
float mp = (size.getWidth() * size.getHeight()) / 1000000f;
if (decimalPlaces == 1) {
return String.format(Locale.US, "%.1f", mp) + " MP";
} else if (decimalPlaces == 2) {
return String.format(Locale.US, "%.2f", mp) + " MP";
} else {
return String.format(Locale.US, "%.2f", mp) + " MP";
}
}
即使未授予相機權限,這也適用於幾乎所有Android 5.0+設備。
聲明:本站的技術帖子網頁,遵循CC BY-SA 4.0協議,如果您需要轉載,請注明本站網址或者原文地址。任何問題請咨詢:yoyou2525@163.com.