Android圆形头像设置(实现相机、相册选择并裁剪)兼容6.0/7.0

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Android圆形头像设置(实现相机、相册选择并裁剪)兼容Android 7.0/6.0

Android7.0新增了权限修改、目录被限制访问、多窗口 等等，最近在做头像设置的时候，运行到Android7.0的机子上，拍照和进图库都报错：FileUriExposedException，又要进行适配了，先来看一下官方解释：

下面就是我做的适配方法，仅供参考，有啥问题一起讨论解决：

AndroidManifest.xml 增加provider定义

        <provider
            android:name="android.support.v4.content.FileProvider"  //固定
            android:authorities="com.lele.avatarcircledemo.fileprovider"//路径 前面为包名，后面为fileprovider固定值，使用包名便于区分
            android:exported="false"//是否支持其它应用调用当前组件 ，要求为flase
            android:grantUriPermissions="true">
            <meta-data
                android:name="android.support.FILE_PROVIDER_PATHS"//固定值
                android:resource="@xml/file_paths" />//在res目录下定义的filepaths.xml文件，名字可以自定义
        </provider>

配置XML文件

在res下创建xml文件夹，并创建filepaths.xml文件，名字可以自定义

<?xml version="1.0" encoding="utf-8"?>
<paths>
    <external-path
        name="camera_photos"
        path="demo" />
</paths>

圆形ImageView自定义控件

/**
 * 圆形头像设置
 */

@SuppressLint("AppCompatCustomView")
public class CircleImageView extends ImageView {

    private static final ScaleType SCALE_TYPE = ScaleType.CENTER_CROP;

    private static final Bitmap.Config BITMAP_CONFIG = Bitmap.Config.ARGB_8888;
    private static final int COLORDRAWABLE_DIMENSION = 2;

    private static final int DEFAULT_BORDER_WIDTH = 0;
    private static final int DEFAULT_BORDER_COLOR = Color.BLACK;

    private final RectF mDrawableRect = new RectF();
    private final RectF mBorderRect = new RectF();

    private final Matrix mShaderMatrix = new Matrix();
    private final Paint mBitmapPaint = new Paint();
    private final Paint mBorderPaint = new Paint();

    private int mBorderColor = DEFAULT_BORDER_COLOR;
    private int mBorderWidth = DEFAULT_BORDER_WIDTH;

    private Bitmap mBitmap;
    private BitmapShader mBitmapShader;
    private int mBitmapWidth;
    private int mBitmapHeight;

    private float mDrawableRadius;
    private float mBorderRadius;

    private boolean mReady;
    private boolean mSetupPending;

    public CircleImageView(Context context) {
        super(context);

        init();
    }

    public CircleImageView(Context context, AttributeSet attrs) {
        this(context, attrs, 0);
    }

    public CircleImageView(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);

        TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.CircleImageView1, defStyle, 0);

        mBorderWidth = a.getDimensionPixelSize(R.styleable.CircleImageView1_border_width, DEFAULT_BORDER_WIDTH);
        mBorderColor = a.getColor(R.styleable.CircleImageView1_border_color, DEFAULT_BORDER_COLOR);

        a.recycle();

        init();
    }

    private void init() {
        super.setScaleType(SCALE_TYPE);
        mReady = true;

        if (mSetupPending) {
            setup();
            mSetupPending = false;
        }
    }

    @Override
    public ScaleType getScaleType() {
        return SCALE_TYPE;
    }

    @Override
    public void setScaleType(ScaleType scaleType) {
        if (scaleType != SCALE_TYPE) {
            throw new IllegalArgumentException(String.format("ScaleType %s not supported.", scaleType));
        }
    }

    @Override
    public void setAdjustViewBounds(boolean adjustViewBounds) {
        if (adjustViewBounds) {
            throw new IllegalArgumentException("adjustViewBounds not supported.");
        }
    }

    @Override
    protected void onDraw(Canvas canvas) {
        if (getDrawable() == null) {
            return;
        }

        canvas.drawCircle(getWidth() / 2, getHeight() / 2, mDrawableRadius, mBitmapPaint);
        if (mBorderWidth != 0) {
            canvas.drawCircle(getWidth() / 2, getHeight() / 2, mBorderRadius, mBorderPaint);
        }
    }

    @Override
    protected void onSizeChanged(int w, int h, int oldw, int oldh) {
        super.onSizeChanged(w, h, oldw, oldh);
        setup();
    }

    public int getBorderColor() {
        return mBorderColor;
    }

    public void setBorderColor(int borderColor) {
        if (borderColor == mBorderColor) {
            return;
        }

        mBorderColor = borderColor;
        mBorderPaint.setColor(mBorderColor);
        invalidate();
    }

    public int getBorderWidth() {
        return mBorderWidth;
    }

    public void setBorderWidth(int borderWidth) {
        if (borderWidth == mBorderWidth) {
            return;
        }

        mBorderWidth = borderWidth;
        setup();
    }

    @Override
    public void setImageBitmap(Bitmap bm) {
        super.setImageBitmap(bm);
        mBitmap = bm;
        setup();
    }

    @Override
    public void setImageDrawable(Drawable drawable) {
        super.setImageDrawable(drawable);
        mBitmap = getBitmapFromDrawable(drawable);
        setup();
    }

    @Override
    public void setImageResource(int resId) {
        super.setImageResource(resId);
        mBitmap = getBitmapFromDrawable(getDrawable());
        setup();
    }

    @Override
    public void setImageURI(Uri uri) {
        super.setImageURI(uri);
        mBitmap = getBitmapFromDrawable(getDrawable());
        setup();
    }

    private Bitmap getBitmapFromDrawable(Drawable drawable) {
        if (drawable == null) {
            return null;
        }

        if (drawable instanceof BitmapDrawable) {
            return ((BitmapDrawable) drawable).getBitmap();
        }

        try {
            Bitmap bitmap;

            if (drawable instanceof ColorDrawable) {
                bitmap = Bitmap.createBitmap(COLORDRAWABLE_DIMENSION, COLORDRAWABLE_DIMENSION, BITMAP_CONFIG);
            } else {
                bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(), drawable.getIntrinsicHeight(), BITMAP_CONFIG);
            }

            Canvas canvas = new Canvas(bitmap);
            drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
            drawable.draw(canvas);
            return bitmap;
        } catch (OutOfMemoryError e) {
            return null;
        }
    }

    private void setup() {
        if (!mReady) {
            mSetupPending = true;
            return;
        }

        if (mBitmap == null) {
            return;
        }

        mBitmapShader = new BitmapShader(mBitmap, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);

        mBitmapPaint.setAntiAlias(true);
        mBitmapPaint.setShader(mBitmapShader);

        mBorderPaint.setStyle(Paint.Style.STROKE);
        mBorderPaint.setAntiAlias(true);
        mBorderPaint.setColor(mBorderColor);
        mBorderPaint.setStrokeWidth(mBorderWidth);

        mBitmapHeight = mBitmap.getHeight();
        mBitmapWidth = mBitmap.getWidth();

        mBorderRect.set(0, 0, getWidth(), getHeight());
        mBorderRadius = Math.min((mBorderRect.height() - mBorderWidth) / 2, (mBorderRect.width() - mBorderWidth) / 2);

        mDrawableRect.set(mBorderWidth, mBorderWidth, mBorderRect.width() - mBorderWidth, mBorderRect.height() - mBorderWidth);
        mDrawableRadius = Math.min(mDrawableRect.height() / 2, mDrawableRect.width() / 2);

        updateShaderMatrix();
        invalidate();
    }

    private void updateShaderMatrix() {
        float scale;
        float dx = 0;
        float dy = 0;

        mShaderMatrix.set(null);

        if (mBitmapWidth * mDrawableRect.height() > mDrawableRect.width() * mBitmapHeight) {
            scale = mDrawableRect.height() / (float) mBitmapHeight;
            dx = (mDrawableRect.width() - mBitmapWidth * scale) * 0.5f;
        } else {
            scale = mDrawableRect.width() / (float) mBitmapWidth;
            dy = (mDrawableRect.height() - mBitmapHeight * scale) * 0.5f;
        }

        mShaderMatrix.setScale(scale, scale);
        mShaderMatrix.postTranslate((int) (dx + 0.5f) + mBorderWidth, (int) (dy + 0.5f) + mBorderWidth);

        mBitmapShader.setLocalMatrix(mShaderMatrix);
    }

}

然后直接在布局中使用：

    <com.lele.avatarcircledemo.view.CircleImageView
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:id="@+id/user_photo"
        android:layout_width="60dp"
        android:layout_height="60dp"
        android:layout_gravity="center"
        android:layout_marginRight="12dp"
        android:src="@mipmap/avatar"
        app:border_color="#ccc"  //边框颜色
        app:border_width="2dp" />  //边框宽度

代码中直接添加图片，即可显示为圆形头像：

user_photo.setImageBitmap(bitmap);

使用相机拍照

    /**
     * 打开系统相机
     */
    private void openCamera() {
        File file = new FileStorage().createIconFile();
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
            imageUri = FileProvider.getUriForFile(this, "com.lele.avatarcircledemo.fileprovider", file);//通过FileProvider创建一个content类型的Uri
        } else {
            imageUri = Uri.fromFile(file);
        }
        Intent intent = new Intent();
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
            intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION); //添加这一句表示对目标应用临时授权该Uri所代表的文件
        }
        intent.setAction(MediaStore.ACTION_IMAGE_CAPTURE);//设置Action为拍照
        intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);//将拍取的照片保存到指定URI
        startActivityForResult(intent, CODE_CAMERA_REQUEST);
    }

裁剪：

    /**
     * 裁剪
     */
    private void cropPhoto() {
        File file = new FileStorage().createCropFile();
        Uri outputUri = Uri.fromFile(file);//缩略图保存地址
        Intent intent = new Intent("com.android.camera.action.CROP");
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
            intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
        }
        intent.setDataAndType(imageUri, "image/*");
        intent.putExtra("crop", "true");
        intent.putExtra("aspectX", 1);
        intent.putExtra("aspectY", 1);
        intent.putExtra("scale", true);
        intent.putExtra("return-data", false);
        intent.putExtra(MediaStore.EXTRA_OUTPUT, outputUri);
        intent.putExtra("outputFormat", Bitmap.CompressFormat.JPEG.toString());
        intent.putExtra("noFaceDetection", true);
        startActivityForResult(intent, CODE_RESULT_REQUEST);
    }

打开相册，选择图片

    /**
     * 从相册选择
     */
    private void selectFromAlbum() {
        Intent intent = new Intent(Intent.ACTION_PICK);
        intent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, "image/*");
        startActivityForResult(intent, CODE_GALLERY_REQUEST);
    }

这里编辑图片处理方式区分Android4.4 前后两种方式：

 ////////////andoird 4.4以后
@TargetApi(19)
    private void handleImageOnKitKat(Intent data) {
        imagePath = null;
        imageUri = data.getData();
        if (DocumentsContract.isDocumentUri(this, imageUri)) {
            //如果是document类型的uri,则通过document id处理
            String docId = DocumentsContract.getDocumentId(imageUri);
            if ("com.android.providers.media.documents".equals(imageUri.getAuthority())) {
                String id = docId.split(":")[1];//解析出数字格式的id
                String selection = MediaStore.Images.Media._ID + "=" + id;
                imagePath = getImagePath(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, selection);
            } else if ("com.android.downloads.documents".equals(imageUri.getAuthority())) {
                Uri contentUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"), Long.valueOf(docId));
                imagePath = getImagePath(contentUri, null);
            }
        } else if ("content".equalsIgnoreCase(imageUri.getScheme())) {
            //如果是content类型的Uri，则使用普通方式处理
            imagePath = getImagePath(imageUri, null);
        } else if ("file".equalsIgnoreCase(imageUri.getScheme())) {
            //如果是file类型的Uri,直接获取图片路径即可
            imagePath = imageUri.getPath();
        }

        cropPhoto();
    }
 ////////////andoird 4.4之前
    private void handleImageBeforeKitKat(Intent intent) {
        imageUri = intent.getData();
        imagePath = getImagePath(imageUri, null);
        cropPhoto();
    }

onActivityForResult中接收

@Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        switch (requestCode) {
            case CODE_GALLERY_REQUEST: // 相册
                if (Build.VERSION.SDK_INT >= 19) {
                    handleImageOnKitKat(data);
                } else {
                    handleImageBeforeKitKat(data);
                }
                break;
            case CODE_CAMERA_REQUEST:  //拍照
                if (hasSdcard()) {
                    if (resultCode == RESULT_OK) {
                        cropPhoto();
                    }
                } else {
                    Toast.makeText(this, "没有SDCard!", Toast.LENGTH_LONG)
                            .show();
                }

                break;
            case CODE_RESULT_REQUEST:
                Bitmap bitmap = null;
                try {
                    if (isClickCamera) {

                        bitmap = BitmapFactory.decodeStream(getContentResolver().openInputStream(imageUri));
                    } else {
                        bitmap = BitmapFactory.decodeFile(imagePath);
                    }
                    setImageToHeadView(bitmap);
                } catch (Exception e) {
                    e.printStackTrace();
                }
                break;
            case REQUEST_PERMISSION://权限请求
                if (resultCode == PermissionsActivity.PERMISSIONS_DENIED) {
//                    finish();
                } else {
                    if (isClickCamera) {
                        openCamera();
                    } else {
                        selectFromAlbum();
                    }
                }
                break;
        }
    }

权限问题

Android 6.0 的部分权限在使用相应功能时，应该判断是否已允许，如果没有需要让用户设置，代码有增加权限检测器，如果被用户禁止，跳转到设置中的权限设置界面。

篇幅有限，完整代码下载地址：
http://download.csdn.net/download/z740852294/9944404