自定义相机 ，粘贴出来就能用
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2022-03-28 17:49:25
package win.smartown.android.library.certificateCamera;import android.app.Activity;import android.content.Intent;import android.content.pm.ActivityInfo;import android.graphics.Bitmap;import android.graphics.BitmapFactory;import android.graphics.Mat....
package win.smartown.android.library.certificateCamera;
import android.app.Activity;
import android.content.Intent;
import android.content.pm.ActivityInfo;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Matrix;
import android.hardware.Camera;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.RelativeLayout;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
public class CameraActivity extends Activity implements View.OnClickListener {
/**
* 拍摄类型-身份证正面
*/
public final static int TYPE_IDCARD_FRONT = 1;
/**
* 拍摄类型-身份证反面
*/
public final static int TYPE_IDCARD_BACK = 2;
/**
* 拍摄类型-竖版营业执照
*/
public final static int TYPE_COMPANY_PORTRAIT = 3;
/**
* 拍摄类型-横版营业执照
*/
public final static int TYPE_COMPANY_LANDSCAPE = 4;
public final static int REQUEST_CODE = 0X13;
public final static int RESULT_CODE = 0X14;
/**
* @param type {@link #TYPE_IDCARD_FRONT}
* {@link #TYPE_IDCARD_BACK}
* {@link #TYPE_COMPANY_PORTRAIT}
* {@link #TYPE_COMPANY_LANDSCAPE}
*/
public static void openCertificateCamera(Activity activity, int type) {
Intent intent = new Intent(activity, CameraActivity.class);
intent.putExtra("type", type);
activity.startActivityForResult(intent, REQUEST_CODE);
}
/**
* @return 结果文件路径
*/
public static String getResult(Intent data) {
if (data != null) {
return data.getStringExtra("result");
}
return "";
}
private CameraPreview cameraPreview;
private View containerView;
private ImageView cropView;
private ImageView flashImageView;
private View optionView;
private View resultView;
private int type;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
type = getIntent().getIntExtra("type", 0);
if (type == TYPE_COMPANY_PORTRAIT) {
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
} else {
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
}
setContentView(R.layout.activity_camera);
cameraPreview = (CameraPreview) findViewById(R.id.camera_surface);
//获取屏幕最小边，设置为cameraPreview较窄的一边
float screenMinSize = Math.min(getResources().getDisplayMetrics().widthPixels, getResources().getDisplayMetrics().heightPixels);
//根据screenMinSize，计算出cameraPreview的较宽的一边，长宽比为标准的16:9
float maxSize = screenMinSize / 9.0f * 16.0f;
RelativeLayout.LayoutParams layoutParams;
if (type == TYPE_COMPANY_PORTRAIT) {
layoutParams = new RelativeLayout.LayoutParams((int) screenMinSize, (int) maxSize);
} else {
layoutParams = new RelativeLayout.LayoutParams((int) maxSize, (int) screenMinSize);
}
layoutParams.addRule(RelativeLayout.CENTER_IN_PARENT);
cameraPreview.setLayoutParams(layoutParams);
containerView = findViewById(R.id.camera_crop_container);
cropView = (ImageView) findViewById(R.id.camera_crop);
if (type == TYPE_COMPANY_PORTRAIT) {
float width = (int) (screenMinSize * 0.8);
float height = (int) (width * 43.0f / 30.0f);
LinearLayout.LayoutParams containerParams = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, (int) height);
LinearLayout.LayoutParams cropParams = new LinearLayout.LayoutParams((int) width, (int) height);
containerView.setLayoutParams(containerParams);
cropView.setLayoutParams(cropParams);
} else if (type == TYPE_COMPANY_LANDSCAPE) {
float height = (int) (screenMinSize * 0.8);
float width = (int) (height * 43.0f / 30.0f);
LinearLayout.LayoutParams containerParams = new LinearLayout.LayoutParams((int) width, ViewGroup.LayoutParams.MATCH_PARENT);
LinearLayout.LayoutParams cropParams = new LinearLayout.LayoutParams((int) width, (int) height);
containerView.setLayoutParams(containerParams);
cropView.setLayoutParams(cropParams);
} else {
float height = (int) (screenMinSize * 0.75);
float width = (int) (height * 75.0f / 47.0f);
LinearLayout.LayoutParams containerParams = new LinearLayout.LayoutParams((int) width, ViewGroup.LayoutParams.MATCH_PARENT);
LinearLayout.LayoutParams cropParams = new LinearLayout.LayoutParams((int) width, (int) height);
containerView.setLayoutParams(containerParams);
cropView.setLayoutParams(cropParams);
}
switch (type) {
case TYPE_IDCARD_FRONT:
cropView.setImageResource(R.mipmap.camera_idcard_front);
break;
case TYPE_IDCARD_BACK:
cropView.setImageResource(R.mipmap.camera_idcard_back);
break;
case TYPE_COMPANY_PORTRAIT:
cropView.setImageResource(R.mipmap.camera_company);
break;
case TYPE_COMPANY_LANDSCAPE:
cropView.setImageResource(R.mipmap.camera_company_landscape);
break;
}
flashImageView = (ImageView) findViewById(R.id.camera_flash);
optionView = findViewById(R.id.camera_option);
resultView = findViewById(R.id.camera_result);
cameraPreview.setOnClickListener(this);
findViewById(R.id.camera_close).setOnClickListener(this);
findViewById(R.id.camera_take).setOnClickListener(this);
flashImageView.setOnClickListener(this);
findViewById(R.id.camera_result_ok).setOnClickListener(this);
findViewById(R.id.camera_result_cancel).setOnClickListener(this);
}
@Override
public void onClick(View v) {
int id = v.getId();
if (id == R.id.camera_surface) {
cameraPreview.focus();
} else if (id == R.id.camera_close) {
finish();
} else if (id == R.id.camera_take) {
takePhoto();
} else if (id == R.id.camera_flash) {
boolean isFlashOn = cameraPreview.switchFlashLight();
flashImageView.setImageResource(isFlashOn ? R.mipmap.camera_flash_on : R.mipmap.camera_flash_off);
} else if (id == R.id.camera_result_ok) {
goBack();
} else if (id == R.id.camera_result_cancel) {
optionView.setVisibility(View.VISIBLE);
cameraPreview.setEnabled(true);
resultView.setVisibility(View.GONE);
cameraPreview.startPreview();
}
}
private void takePhoto() {
optionView.setVisibility(View.GONE);
cameraPreview.setEnabled(false);
cameraPreview.takePhoto(new Camera.PictureCallback() {
@Override
public void onPictureTaken(final byte[] data, Camera camera) {
camera.stopPreview();
//子线程处理图片，防止ANR
new Thread(new Runnable() {
@Override
public void run() {
try {
File originalFile = getOriginalFile();
FileOutputStream originalFileOutputStream = new FileOutputStream(originalFile);
originalFileOutputStream.write(data);
originalFileOutputStream.close();
Bitmap bitmap = BitmapFactory.decodeFile(originalFile.getPath());
//计算裁剪位置
float left, top, right, bottom;
// if (type == TYPE_COMPANY_PORTRAIT) {
// left = (float) cropView.getLeft() / (float) cameraPreview.getWidth();
// top = ((float) containerView.getTop() - (float) cameraPreview.getTop()) / (float) cameraPreview.getHeight();
// right = (float) cropView.getRight() / (float) cameraPreview.getWidth();
// bottom = (float) containerView.getBottom() / (float) cameraPreview.getHeight();
// } else {
left = ((float) containerView.getLeft() - (float) cameraPreview.getLeft()) / (float) cameraPreview.getWidth();
top = (float) cropView.getTop() / (float) cameraPreview.getHeight();
right = (float) containerView.getRight() / (float) cameraPreview.getWidth();
bottom = (float) cropView.getBottom() / (float) cameraPreview.getHeight();
// }
//裁剪及保存到文件
Bitmap cropBitmap = Bitmap.createBitmap(bitmap,
(int) (left * (float) bitmap.getWidth()),
(int) (top * (float) bitmap.getHeight()),
(int) ((right - left) * (float) bitmap.getWidth()),
(int) ((bottom - top) * (float) bitmap.getHeight()));
final File cropFile = getCropFile();
cropBitmap.isMutable();
BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(cropFile));
cropBitmap.compress(Bitmap.CompressFormat.JPEG, 100, bos);
bos.flush();
bos.close();
runOnUiThread(new Runnable() {
@Override
public void run() {
resultView.setVisibility(View.VISIBLE);
}
});
return;
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
runOnUiThread(new Runnable() {
@Override
public void run() {
optionView.setVisibility(View.VISIBLE);
cameraPreview.setEnabled(true);
}
});
}
}).start();
}
});
}
/**
* @return 拍摄图片原始文件
*/
private File getOriginalFile() {
switch (type) {
case TYPE_IDCARD_FRONT:
return new File(getExternalCacheDir(), "idCardFront.jpg");
case TYPE_IDCARD_BACK:
return new File(getExternalCacheDir(), "idCardBack.jpg");
case TYPE_COMPANY_PORTRAIT:
case TYPE_COMPANY_LANDSCAPE:
return new File(getExternalCacheDir(), "companyInfo.jpg");
}
return new File(getExternalCacheDir(), "picture.jpg");
}
/**
* @return 拍摄图片裁剪文件
*/
private File getCropFile() {
switch (type) {
case TYPE_IDCARD_FRONT:
return new File(getExternalCacheDir(), "idCardFrontCrop.jpg");
case TYPE_IDCARD_BACK:
return new File(getExternalCacheDir(), "idCardBackCrop.jpg");
case TYPE_COMPANY_PORTRAIT:
case TYPE_COMPANY_LANDSCAPE:
return new File(getExternalCacheDir(), "companyInfoCrop.jpg");
}
return new File(getExternalCacheDir(), "pictureCrop.jpg");
}
/**
* 点击对勾，使用拍照结果，返回对应图片路径
*/
private void goBack() {
Intent intent = new Intent();
intent.putExtra("result", getCropFile().getPath());
setResult(RESULT_CODE, intent);
finish();
}
}
package win.smartown.android.library.certificateCamera;
import android.annotation.TargetApi;
import android.content.Context;
import android.content.res.Configuration;
import android.hardware.Camera;
import android.os.Build;
import android.util.AttributeSet;
import android.util.Log;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import java.util.List;
public class CameraPreview extends SurfaceView implements SurfaceHolder.Callback {
private static String TAG = CameraPreview.class.getName();
private Camera camera;
public CameraPreview(Context context) {
super(context);
init();
}
public CameraPreview(Context context, AttributeSet attrs) {
super(context, attrs);
init();
}
public CameraPreview(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
init();
}
@TargetApi(Build.VERSION_CODES.LOLLIPOP)
public CameraPreview(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
super(context, attrs, defStyleAttr, defStyleRes);
init();
}
private void init() {
SurfaceHolder surfaceHolder = getHolder();
surfaceHolder.addCallback(this);
surfaceHolder.setKeepScreenOn(true);
surfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
}
public void surfaceCreated(SurfaceHolder holder) {
camera = CameraUtils.openCamera();
if (camera != null) {
try {
camera.setPreviewDisplay(holder);
Camera.Parameters parameters = camera.getParameters();
if (getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT) {
//竖屏拍照时，需要设置旋转90度，否者看到的相机预览方向和界面方向不相同
camera.setDisplayOrientation(90);
parameters.setRotation(90);
} else {
camera.setDisplayOrientation(0);
parameters.setRotation(0);
}
Camera.Size bestSize = getBestSize(parameters.getSupportedPreviewSizes());
if (bestSize != null) {
parameters.setPreviewSize(bestSize.width, bestSize.height);
parameters.setPictureSize(bestSize.width, bestSize.height);
} else {
parameters.setPreviewSize(1920, 1080);
parameters.setPictureSize(1920, 1080);
}
camera.setParameters(parameters);
camera.startPreview();
focus();
} catch (Exception e) {
Log.d(TAG, "Error setting camera preview: " + e.getMessage());
try {
Camera.Parameters parameters = camera.getParameters();
if (getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT) {
//竖屏拍照时，需要设置旋转90度，否者看到的相机预览方向和界面方向不相同
camera.setDisplayOrientation(90);
parameters.setRotation(90);
} else {
camera.setDisplayOrientation(0);
parameters.setRotation(0);
}
camera.setParameters(parameters);
camera.startPreview();
focus();
} catch (Exception e1) {
e.printStackTrace();
camera = null;
}
}
}
}
public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
//因为设置了固定屏幕方向，所以在实际使用中不会触发这个方法
}
public void surfaceDestroyed(SurfaceHolder holder) {
//回收释放资源
release();
}
/**
* Android相机的预览尺寸都是4:3或者16:9，这里遍历所有支持的预览尺寸，得到16:9的最大尺寸，保证成像清晰度
*
* @param sizes
* @return 最佳尺寸
*/
private Camera.Size getBestSize(List<Camera.Size> sizes) {
Camera.Size bestSize = null;
for (Camera.Size size : sizes) {
if ((float) size.width / (float) size.height == 16.0f / 9.0f) {
if (bestSize == null) {
bestSize = size;
} else {
if (size.width > bestSize.width) {
bestSize = size;
}
}
}
}
return bestSize;
}
/**
* 释放资源
*/
private void release() {
if (camera != null) {
camera.stopPreview();
camera.release();
camera = null;
}
}
/**
* 对焦，在CameraActivity中触摸对焦
*/
public void focus() {
if (camera != null) {
camera.autoFocus(null);
}
}
/**
* 开关闪光灯
*
* @return 闪光灯是否开启
*/
public boolean switchFlashLight() {
if (camera != null) {
Camera.Parameters parameters = camera.getParameters();
if (parameters.getFlashMode().equals(Camera.Parameters.FLASH_MODE_OFF)) {
parameters.setFlashMode(Camera.Parameters.FLASH_MODE_TORCH);
camera.setParameters(parameters);
return true;
} else {
parameters.setFlashMode(Camera.Parameters.FLASH_MODE_OFF);
camera.setParameters(parameters);
return false;
}
}
return false;
}
/**
* 拍摄照片
*
* @param pictureCallback 在pictureCallback处理拍照回调
*/
public void takePhoto(Camera.PictureCallback pictureCallback) {
if (camera != null) {
camera.takePicture(null, null, pictureCallback);
}
}
public void startPreview() {
if (camera != null) {
camera.startPreview();
}
}
}
package win.smartown.android.library.certificateCamera;
import android.content.Context;
import android.content.pm.PackageManager;
import android.hardware.Camera;
public class CameraUtils {
/**
* Check if this device has a camera
*/
public static boolean hasCamera(Context context) {
if (context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA)) {
// this device has a camera
return true;
} else {
// no camera on this device
return false;
}
}
/**
* A safe way to get an instance of the Camera object.
*/
public static Camera openCamera() {
Camera c = null;
try {
c = Camera.open(); // attempt to get a Camera instance
} catch (Exception e) {
// Camera is not available (in use or does not exist)
}
return c; // returns null if camera is unavailable
}
}
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#000">
<win.smartown.android.library.certificateCamera.CameraPreview
android:id="@+id/camera_surface"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:background="@color/preview_mock"
android:gravity="center"
android:text="Sentuh layar untuk fokus"
android:textColor="#afff"
android:textSize="16dp" />
<LinearLayout
android:id="@+id/camera_crop_container"
android:layout_width="0dp"
android:layout_height="0dp"
android:orientation="horizontal">
<View
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="@color/preview_mock" />
<ImageView
android:id="@+id/camera_crop"
android:layout_width="0dp"
android:layout_height="0dp"
android:scaleType="fitXY" />
<View
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="@color/preview_mock" />
</LinearLayout>
</LinearLayout>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="136dp"
android:background="@color/preview_mock">
<LinearLayout
android:id="@+id/camera_option"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:orientation="horizontal">
<ImageView
android:id="@+id/camera_close"
android:layout_width="40dp"
android:layout_height="40dp"
android:src="@mipmap/camera_close" />
<ImageView
android:id="@+id/camera_take"
android:layout_width="72dp"
android:layout_height="72dp"
android:layout_margin="32dp"
android:src="@mipmap/camera_take" />
<ImageView
android:id="@+id/camera_flash"
android:layout_width="40dp"
android:layout_height="40dp"
android:src="@mipmap/camera_flash_off" />
</LinearLayout>
<LinearLayout
android:id="@+id/camera_result"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:orientation="horizontal"
android:visibility="gone">
<ImageView
android:id="@+id/camera_result_cancel"
android:layout_width="40dp"
android:layout_height="40dp"
android:src="@mipmap/camera_result_cancel" />
<ImageView
android:id="@+id/camera_result_ok"
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_marginLeft="80dp"
android:src="@mipmap/camera_result_ok" />
</LinearLayout>
</FrameLayout>
</LinearLayout>
</RelativeLayout>
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#000">
<win.smartown.android.library.certificateCamera.CameraPreview
android:id="@+id/camera_surface"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="horizontal">
<LinearLayout
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:orientation="horizontal">
<View
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:background="@color/preview_mock" />
<LinearLayout
android:id="@+id/camera_crop_container"
android:layout_width="0dp"
android:layout_height="0dp"
android:orientation="vertical">
<View
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:background="@color/preview_mock" />
<ImageView
android:id="@+id/camera_crop"
android:layout_width="0dp"
android:layout_height="0dp"
android:scaleType="fitXY" />
<TextView
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:background="@color/preview_mock"
android:gravity="center"
android:text="@string/touch_to_focus"
android:textColor="#afff"
android:textSize="16dp" />
</LinearLayout>
</LinearLayout>
<FrameLayout
android:layout_width="136dp"
android:layout_height="match_parent"
android:background="@color/preview_mock">
<LinearLayout
android:id="@+id/camera_option"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:orientation="vertical">
<ImageView
android:id="@+id/camera_flash"
android:layout_width="40dp"
android:layout_height="40dp"
android:src="@mipmap/camera_flash_off" />
<ImageView
android:id="@+id/camera_take"
android:layout_width="72dp"
android:layout_height="72dp"
android:layout_margin="32dp"
android:src="@mipmap/camera_take" />
<ImageView
android:id="@+id/camera_close"
android:layout_width="40dp"
android:layout_height="40dp"
android:src="@mipmap/camera_close" />
</LinearLayout>
<LinearLayout
android:id="@+id/camera_result"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:orientation="vertical"
android:visibility="gone">
<ImageView
android:id="@+id/camera_result_ok"
android:layout_width="40dp"
android:layout_height="40dp"
android:src="@mipmap/camera_result_ok" />
<ImageView
android:id="@+id/camera_result_cancel"
android:layout_width="40dp"
android:layout_height="40dp"
android:layout_marginTop="80dp"
android:src="@mipmap/camera_result_cancel" />
</LinearLayout>
</FrameLayout>
</LinearLayout>
</RelativeLayout>
本文地址：https://blog.csdn.net/weixin_41194750/article/details/107356258