Android 开发调用本机图库中图片和调用本机摄像头拍照_android实现调用系统相机拍照demo

注意：android7.0以上拍照会闪退，需要调用以下代码

 // android 7.0以上系统解决拍照的问题
    private void initPhotoError(){
        StrictMode.VmPolicy.Builder builder = new StrictMode.VmPolicy.Builder();
        StrictMode.setVmPolicy(builder.build());
        builder.detectFileUriExposure();
    }

一、权限配置

 <uses-permission android:name="android.permission.INTERNET" /><!--网络权限-->
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /><!--写入权限-->
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" /><!--读取权限-->

代码中区分跳转图库和摄像头属性

private final int GALLERY = 0;// 图库
private final int TAKE_PHOTO = 1;// 拍照

二、调用本机图库方法

// 创建Intent，用于打开手机本地图库选择图片
Intent base_pic = new Intent(Intent.ACTION_PICK,
                        android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
//选择图片格式
base_pic.setType("image/*");
// 启动intent打开本地图库
startActivityForResult(base_pic,GALLERY);

获取到选中的图片并保存到自定义文件夹

    /**
     * 跳转页面返回方法
     * */
    @Override
    public void onActivityResult(int requestCode,int resultCode,Intent data) {
        super.onActivityResult(requestCode,resultCode,data);
 
        switch (requestCode){
            //处理图库返回
            case GALLERY:
                if(resultCode == RESULT_OK){
                    Uri selectedImage = data.getData();
                    try {
                        InputStream imageIS = getActivity().getContentResolver().openInputStream(selectedImage);
                        // 获取图片流
                        Bitmap bitmap = BitmapFactory.decodeStream(imageIS);
                        // 调用保存图片方法
                        saveBitmapFile(bitmap);
                    } catch (FileNotFoundException e) {
                        e.printStackTrace();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
 
 
                }
                break;
        } 
 
 
        /**设置拍照保存后再次跳到拍照界面**/
        if (resultCode == RESULT_OK && requestCode == 1){
            // 图片名称
            String imgName = new Date().getTime() + ".jpg";
            Uri uri = getTakePhotoUri(paramFile,imgName);
            // 创建Intent,用于调用摄像头
            Intent tp_intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
            //存放相机返回的图片
            tp_intent.putExtra(MediaStore.EXTRA_OUTPUT,uri);
            // 启动intent调用本机摄像头
            startActivityForResult(tp_intent,TAKE_PHOTO);
        }
 
 
    }
 
 /**
     * 保存图库选取的图片
     * */
    public void saveBitmapFile(Bitmap bitmap){
        File galleyFile = new File(Environment.getExternalStorageDirectory(),"图库图片");
 
        File temp = new File(galleyFile.getPath());//要保存文件先创建文件夹
        if (!temp.exists()) {
            temp.mkdir();
        }
 
        // 图片名称
        String imgName = new Date().getTime() + ".jpg";
        //将要保存图片的路径和图片名称
        File file=new File(galleyFile.getPath()+File.separator+imgName);
 
        try {
            BufferedOutputStream bos= new BufferedOutputStream(new FileOutputStream(file));
            bitmap.compress(Bitmap.CompressFormat.JPEG, 100, bos);
            bos.flush();
            bos.close();
 
            Toast.makeText(getContext(),
                    "路径："+galleyFile.getPath(),
                    Toast.LENGTH_SHORT).show();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

 三、调用本机摄像头拍照方法

 // 创建Intent,用于调用摄像头
Intent tp_intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
// 图片名称
String imgName = new Date().getTime() + ".jpg";
//存放相机返回的图片
tp_intent.putExtra(MediaStore.EXTRA_OUTPUT, getTakePhotoUri(imgName));
// 启动intent调用本机摄像头
startActivityForResult(tp_intent,TAKE_PHOTO);

获取Uri方法（拍照后的图片保存路径）

    /**
     * 设置相机拍照返回图片路径
     * */
    private Uri getTakePhotoUri(String imgName){
        File photoFile = new File(Environment.getExternalStorageDirectory(), "岩芯图片");
 
        if (!photoFile.exists()) {
            photoFile.mkdirs();
        }
 
        //将要保存图片的路径和图片名称
        File file = new File(photoFile+File.separator+imgName);
 
        Uri uri = Uri.fromFile(file);
 
        return uri;
    }

四、配置文件修改（高版本无法获取图片）

apply plugin: 'com.android.application'
 
android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.chy.democamera"
        minSdkVersion 21
        targetSdkVersion 28
        versionCode 1
        versionName "2.0"
        testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
        }
    }
    lintOptions {
        checkReleaseBuilds false
        abortOnError false
    }
    sourceSets {
        main {
            jniLibs.srcDir 'libs'
        }
    }
}
 
repositories {
    mavenCentral()
    google()
}
 
 
dependencies {
    implementation fileTree(include: ['*.jar'], dir: 'libs')
    implementation 'com.android.support:appcompat-v7:28.0.0'
    implementation 'com.android.support:support-v4:28.0.0'
    implementation 'com.android.support:design:28.0.0'
    implementation 'com.android.support.constraint:constraint-layout:1.1.3'
    testImplementation 'junit:junit:4.12'
    androidTestImplementation 'com.android.support.test:runner:1.0.2'
    androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
    implementation 'com.github.bumptech.glide:glide:4.9.0'
    annotationProcessor 'com.github.bumptech.glide:compiler:4.9.0'
}