第一步配置：
根目录下的build.gradle
buildscript {
ext.kotlin_version = "1.5.21"
repositories {
google()
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.5.3'
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
google()
jcenter()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
app目录下的build.gradle
顶部
apply plugin: 'kotlin-android'
库的引入
//相机
implementation files('libs/fotoapparat-release.aar')
implementation "org.jetbrains.kotlin:kotlin-stdlib:$kotlin_version"
implementation 'org.jetbrains.kotlinx:kotlinx-coroutines-core:1.3.0'
//Android组件异步通信的框架
implementation 'io.reactivex.rxjava2:rxjava:2.1.3'
implementation 'io.reactivex.rxjava2:rxandroid:2.0.1'
//RxPermissions权限获取
implementation 'com.tbruyelle.rxpermissions2:rxpermissions:0.9.4@aar'
xml布局
activity_main.xml
<?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:orientation="vertical">
<io.fotoapparat.view.CameraView
android:id="@+id/cameraView"
android:layout_width="match_parent"
android:layout_height="550sp">
<!--Optionally add tap to focus-->
<io.fotoapparat.view.FocusView
android:id="@+id/focusView"
android:layout_width="match_parent"
android:layout_height="550sp" />
</io.fotoapparat.view.CameraView>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:gravity="center">
<Button
android:id="@+id/takephoto"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="拍照" />
<Button
android:id="@+id/btnStart"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="@+id/takephoto"
android:text="闪光灯" />
</LinearLayout>
</RelativeLayout>
主程序：
package com.renhui.rhcamera2;
import static io.fotoapparat.result.transformer.ResolutionTransformersKt.scaled;
import static io.fotoapparat.selector.FlashSelectorsKt.off;
import static io.fotoapparat.selector.FlashSelectorsKt.torch;
import java.math.BigDecimal;
import android.Manifest;
import android.annotation.SuppressLint;
import android.graphics.Bitmap;
import android.graphics.Matrix;
import android.hardware.Camera;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import com.tbruyelle.rxpermissions2.RxPermissions;
import io.fotoapparat.Fotoapparat;
import io.fotoapparat.capability.Capabilities;
import io.fotoapparat.configuration.UpdateConfiguration;
import io.fotoapparat.parameter.Resolution;
import io.fotoapparat.parameter.Zoom;
import io.fotoapparat.result.BitmapPhoto;
import io.fotoapparat.result.PhotoResult;
import io.fotoapparat.view.CameraView;
import io.fotoapparat.view.FocusView;
import io.reactivex.functions.Consumer;
import kotlin.Unit;
import kotlin.jvm.functions.Function1;
/**
* 本类使用Camera2使用简单相机
*/
public class MainActivity2 extends AppCompatActivity {
private static final String TAG = "Camera2Test";
CameraView mCameraView;
FocusView mFocusView;
private Button light;
private Button takePhoto2;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Log.e(TAG, "onCreate！");
setContentView(R.layout.activity_main);
intiView();
initEvent();
}
private void intiView() {
mCameraView = findViewById(R.id.cameraView);
mFocusView = findViewById(R.id.focusView);
light = (Button) findViewById(R.id.btnStart);
takePhoto2 = (Button) findViewById(R.id.takephoto);
}
private boolean isOpenFlahsLight = false;//是否打开手电筒
private void initEvent() {
light.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if (isOpenFlahsLight) {
if (mFotoapparat != null) {
mFotoapparat.updateConfiguration(UpdateConfiguration.builder().flash(off()).build());
}
} else {
if (mFotoapparat != null) {
mFotoapparat.updateConfiguration(UpdateConfiguration.builder().flash(torch()).build());
}
}
isOpenFlahsLight = !isOpenFlahsLight;
}
});
takePhoto2.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
initSfvCamera();
}
});
}
/**
* 初始化自定义相机预览界面
*/
private void initSfvCamera() {
requestPermissions(-1);
}
private Fotoapparat mFotoapparat;
/**
* 获取权限
* <p>
*/
@SuppressLint("CheckResult")
public void requestPermissions(final int viewId) {
RxPermissions rxPermission = new RxPermissions(this);
rxPermission.request(
Manifest.permission.CAMERA,
Manifest.permission.WRITE_EXTERNAL_STORAGE)
.subscribe(new Consumer<Boolean>() {
@Override
public void accept(Boolean isAccess) throws Exception {
if (isAccess) {
if (viewId == -1) {
mFotoapparat = new Fotoapparat(MainActivity2.this, mCameraView, mFocusView);
mFotoapparat.start();
adjustViewsVisibility();
//重新初始化手电筒
isOpenFlahsLight = false;
}
takePhoto();
}
}
});
}
/**
* 拍照
*/
private void takePhoto() {
try {
if (mFotoapparat == null) {
return;
}
PhotoResult result = mFotoapparat.takePicture();
result.toBitmap(new Function1<Resolution, Resolution>() {
@Override
public Resolution invoke(Resolution resolution) {
return scaled(0.25f).invoke(resolution);
}
})
.whenAvailable(new Function1<BitmapPhoto, Unit>() {
@Override
public Unit invoke(BitmapPhoto bitmapPhoto) {
if (bitmapPhoto == null) {
return null;
}
Bitmap bitmap = bitmapPhoto.bitmap;
//转向
Matrix matrix = new Matrix();
matrix.setRotate(90);
bitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, false);
//缓存拍照出来的文件
MyFileUtils.compressAndSaveImage(MainActivity2.this, bitmap, 1024 * 2);
return null;
}
});
} catch (Exception e) {
}
}
private void adjustViewsVisibility() {
mFotoapparat.getCapabilities()
.whenAvailable(new Function1<Capabilities, Unit>() {
@Override
public Unit invoke(Capabilities capabilities) {
if (capabilities == null) {
return null;
}
if (capabilities.getZoom() instanceof Zoom.VariableZoom) {
Zoom.VariableZoom zoom = (Zoom.VariableZoom) capabilities.getZoom();
mFocusView.setScaleListener(new Function1<Float, Unit>() {
@Override
public Unit invoke(Float aFloat) {
scaleZoom(aFloat);
return null;
}
});
mFocusView.setPtrListener(new Function1<Integer, Unit>() {
@Override
public Unit invoke(Integer integer) {
return null;
}
});
} else {
mFocusView.setScaleListener(null);
mFocusView.setPtrListener(null);
}
return null;
}
});
}
private float curZoom = 0f;
private void scaleZoom(Float scaleFactor) {
float plusZoom;
if (scaleFactor < 1) {
plusZoom = -1 * (1 - scaleFactor);
} else {
plusZoom = scaleFactor - 1;
}
float newZoom = new BigDecimal(curZoom).add(new BigDecimal(plusZoom)).floatValue();
if (newZoom < 0 || newZoom > 1) {
return;
}
curZoom = newZoom;
mFotoapparat.setZoom(curZoom);
}
private Camera mCamera;//相机
//聚焦
public void startFocusTimmer() {
preHandler.sendEmptyMessageDelayed(2, 2100);
}
//停止聚焦
public void stopFocusTimer() {
preHandler.removeMessages(2);
}
Handler preHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
if (msg.what == 2) {
startFocusTimmer();
Log.d("onAutoFocus", "onAutoFocus: " + 1111);
//相机聚焦
if (mCamera == null) {
return;
}
Log.d("onAutoFocus", "onAutoFocus: " + 2222);
try {
// focus = false;
mCamera.autoFocus(new Camera.AutoFocusCallback() {
@Override
public void onAutoFocus(boolean success, Camera camera) {
// focus = success;
Log.d("onAutoFocus", "onAutoFocus: " + success);
if (success) {
try {
startFocusTimmer();
mCamera.cancelAutoFocus();
} catch (Exception e) {
Log.e("exception-->", e.getMessage() + "");
}
}
}
});
} catch (Exception e) {
}
}
}
};
//停止聚焦
public void stopTimmer() {
preHandler.removeMessages(2);
}
@Override
protected void onResume() {
super.onResume();
startFocusTimmer();
}
@Override
protected void onStart() {
super.onStart();
if (mFotoapparat != null) {
mFotoapparat.start();
adjustViewsVisibility();
}
}
@Override
protected void onStop() {
super.onStop();
stopFocusTimer();
if (mFotoapparat != null) {
mFotoapparat.stop();
}
}
@Override
protected void onDestroy() {
super.onDestroy();
stopTimmer();
}
}
最终效果如下：
相机使用
fotoapparat-release.aar此aar可在https://download.csdn.net/download/qq_41620230/85301683?spm=1001.2014.3001.5503? 获得
