Android圆形头像设置(实现相机、相册选择并裁剪)兼容6.0/7.0

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) {
<
4000
span class="hljs-keyword">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,
bd5f
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