版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/u011394071/article/details/53456179
相册获取、相机拍摄，裁剪圆形头像
应用场景
- 很多应用都有个人中心，个人中心就会有头像，现在一般都流行圆形头像，那么怎么设置呢
使用步骤
- 这里参考了网上各位大神的文章，因为中途遇到几个坑，折磨了一天，快要疯了，因为本人也是菜鸟，所以被虐是必然了，当然我们看到新人遇到问题时，不要觉得那个问题是简单的，当初如果你没有遇到这种需求或没接触过那些坑时，或许也会感到不简单的。
- 因为遇到的坑较多，忘记了参考那些文章，反正是东看看西看看，然后拼凑到一起，稍微总结一些坑
- 废话不多，先分析一下步骤
- 要将图片设置成圆形，需要自定义展示图片的控件
- 获取相册的意图
- 获取相机的意图。
- 裁剪程序
- 保存裁剪后的图片
- 设置展示圆形图片
-
遇到的坑
- 拍照时返回的data获取不到uri,这是个坑
- 在onActivityResult方法中，如果判断data==null,就返回，则拍照时就不能通过，这个搞不懂啥原因
- 拍照后，想通过保存图片的路径去获取图片并裁剪，结果失败，可能直接这么获取得到的图片太大，而通过api获取相册的方式，返回的图片其实是被压缩过的，所以不用担心OOM
-
AlertDialog如果是自定义视图，在每次启动时需要将视图的父容器移除，否则挂掉。
ViewGroup p = (ViewGroup) mView.getParent(); if (p != null) { p.removeAllViewsInLayout(); } -
读取相册时，当android大于4.4版本时需要处理，否则挂掉。
//android大于4.4版本处理，否则挂掉 if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) { String url = PhotoClipperUtil.getPath(context, uri); intent.setDataAndType(Uri.fromFile(new File(url)), "image/*"); }
实现步骤
1.添加权限
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.CAMERA"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>
2.自定义控件
package skxy.dev.safehttps.view;
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.PorterDuff;
import android.graphics.PorterDuffXfermode;
import android.graphics.Rect;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.NinePatchDrawable;
import android.util.AttributeSet;
import android.widget.ImageView;
import skxy.dev.safehttps.R;
/**
* ClassName ： RoundImageView
* Created by： skxy on 2016/12/4.
* DES ：自定义圆形图片类
*/
public class RoundImageView extends ImageView {
private int mBorderThickness = 0;
private Context mContext;
private int defaultColor = 0xFFFFFFFF;
// 如果只有其中一个有值，则只画一个圆形边框
private int mBorderOutsideColor = 0;
private int mBorderInsideColor = 0;
// 控件默认长、宽
private int defaultWidth = 0;
private int defaultHeight = 0;
public RoundImageView(Context context) {
super(context);
mContext = context;
}
public RoundImageView(Context context, AttributeSet attrs) {
super(context, attrs);
mContext = context;
setCustomAttributes(attrs);
}
public RoundImageView(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
mContext = context;
setCustomAttributes(attrs);
}
private void setCustomAttributes(AttributeSet attrs) {
TypedArray a = mContext.obtainStyledAttributes(attrs, R.styleable.roundedimageview);
mBorderThickness = a.getDimensionPixelSize(R.styleable.roundedimageview_border_thickness, 0);
mBorderOutsideColor = a.getColor(R.styleable.roundedimageview_border_outside_color,defaultColor);
mBorderInsideColor = a.getColor(R.styleable.roundedimageview_border_inside_color, defaultColor);
}
@Override
protected void onDraw(Canvas canvas) {
Drawable drawable = getDrawable() ;
if (drawable == null) {
return;
}
if (getWidth() == 0 || getHeight() == 0) {
return;
}
this.measure(0, 0);
if (drawable.getClass() == NinePatchDrawable.class)
return;
Bitmap b = ((BitmapDrawable) drawable).getBitmap();
Bitmap bitmap = b.copy(Bitmap.Config.ARGB_8888, true);
if (defaultWidth == 0) {
defaultWidth = getWidth();
}
if (defaultHeight == 0) {
defaultHeight = getHeight();
}
int radius = 0;
if (mBorderInsideColor != defaultColor && mBorderOutsideColor != defaultColor) {// 定义画两个边框，分别为外圆边框和内圆边框
radius = (defaultWidth < defaultHeight ? defaultWidth : defaultHeight) / 2 - 2 * mBorderThickness;
// 画内圆
drawCircleBorder(canvas, radius + mBorderThickness / 2,mBorderInsideColor);
// 画外圆
drawCircleBorder(canvas, radius + mBorderThickness + mBorderThickness / 2, mBorderOutsideColor);
} else if (mBorderInsideColor != defaultColor && mBorderOutsideColor == defaultColor) {// 定义画一个边框
radius = (defaultWidth < defaultHeight ? defaultWidth : defaultHeight) / 2 - mBorderThickness;
drawCircleBorder(canvas, radius + mBorderThickness / 2, mBorderInsideColor);
} else if (mBorderInsideColor == defaultColor && mBorderOutsideColor != defaultColor) {// 定义画一个边框
radius = (defaultWidth < defaultHeight ? defaultWidth : defaultHeight) / 2 - mBorderThickness;
drawCircleBorder(canvas, radius + mBorderThickness / 2, mBorderOutsideColor);
} else {// 没有边框
radius = (defaultWidth < defaultHeight ? defaultWidth : defaultHeight) / 2;
}
Bitmap roundBitmap = getCroppedRoundBitmap(bitmap, radius);
canvas.drawBitmap(roundBitmap, defaultWidth / 2 - radius, defaultHeight / 2 - radius, null);
}
/**
* 获取裁剪后的圆形图片
* @param radius 半径
*/
public Bitmap getCroppedRoundBitmap(Bitmap bmp, int radius) {
Bitmap scaledSrcBmp;
int diameter = radius * 2;
// 为了防止宽高不相等，造成圆形图片变形，因此截取长方形中处于中间位置最大的正方形图片
int bmpWidth = bmp.getWidth();
int bmpHeight = bmp.getHeight();
int squareWidth = 0, squareHeight = 0;
int x = 0, y = 0;
Bitmap squareBitmap;
if (bmpHeight > bmpWidth) {// 高大于宽
squareWidth = squareHeight = bmpWidth;
x = 0;
y = (bmpHeight - bmpWidth) / 2;
// 截取正方形图片
squareBitmap = Bitmap.createBitmap(bmp, x, y, squareWidth, squareHeight);
} else if (bmpHeight < bmpWidth) {// 宽大于高
squareWidth = squareHeight = bmpHeight;
x = (bmpWidth - bmpHeight) / 2;
y = 0;
squareBitmap = Bitmap.createBitmap(bmp, x, y, squareWidth,squareHeight);
} else {
squareBitmap = bmp;
}
if (squareBitmap.getWidth() != diameter || squareBitmap.getHeight() != diameter) {
scaledSrcBmp = Bitmap.createScaledBitmap(squareBitmap, diameter,diameter, true);
} else {
scaledSrcBmp = squareBitmap;
}
Bitmap output = Bitmap.createBitmap(scaledSrcBmp.getWidth(),
scaledSrcBmp.getHeight(),
Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(output);
Paint paint = new Paint();
Rect rect = new Rect(0, 0, scaledSrcBmp.getWidth(),scaledSrcBmp.getHeight());
paint.setAntiAlias(true);
paint.setFilterBitmap(true);
paint.setDither(true);
canvas.drawARGB(0, 0, 0, 0);
canvas.drawCircle(scaledSrcBmp.getWidth() / 2,
scaledSrcBmp.getHeight() / 2,
scaledSrcBmp.getWidth() / 2,
paint);
paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
canvas.drawBitmap(scaledSrcBmp, rect, rect, paint);
bmp = null;
squareBitmap = null;
scaledSrcBmp = null;
return output;
}
/**
* 边缘画圆
*/
private void drawCircleBorder(Canvas canvas, int radius, int color) {
Paint paint = new Paint();
/* 去锯齿 */
paint.setAntiAlias(true);
paint.setFilterBitmap(true);
paint.setDither(true);
paint.setColor(color);
/* 设置paint的style为STROKE：空心 */
paint.setStyle(Paint.Style.STROKE);
/* 设置paint的外框宽度 */
paint.setStrokeWidth(mBorderThickness);
canvas.drawCircle(defaultWidth / 2, defaultHeight / 2, radius, paint);
}
}
3.自定义控件相关属性，在res/values/目录下创建attr文件
<?xml version="1.0" encoding="utf-8"?>
<resources>
<declare-styleable name="roundedimageview">
<attr name="border_thickness" format="dimension" />
<attr name="border_inside_color" format="color" />
<attr name="border_outside_color" format="color"></attr>
</declare-styleable>
</resources>
4.相关处理工具类
package skxy.dev.safehttps;
import android.annotation.TargetApi;
import android.content.ContentUris;
import android.content.Context;
import android.database.Cursor;
import android.net.Uri;
import android.os.Build;
import android.os.Environment;
import android.provider.DocumentsContract;
import android.provider.MediaStore;
/**
* ClassName ： PhotoClipperUtil
* Created by： skxy on 2016/12/3.
* DES ：图片路径获取工具类
*/
public class PhotoClipperUtil {
@TargetApi(Build.VERSION_CODES.KITKAT)
public static String getPath(final Context context, final Uri uri) {
final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
// DocumentProvider
if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {
// ExternalStorageProvider
if (isExternalStorageDocument(uri)) {
final String docId = DocumentsContract.getDocumentId(uri);
final String[] split = docId.split(":");
final String type = split[0];
if ("primary".equalsIgnoreCase(type)) {
return Environment.getExternalStorageDirectory() + "/" + split[1];
}
}
// DownloadsProvider
else if (isDownloadsDocument(uri)) {
final String id = DocumentsContract.getDocumentId(uri);
final Uri contentUri = ContentUris.withAppendedId(
Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));
return getDataColumn(context, contentUri, null, null);
}
// MediaProvider
else if (isMediaDocument(uri)) {
final String docId = DocumentsContract.getDocumentId(uri);
final String[] split = docId.split(":");
final String type = split[0];
Uri contentUri = null;
if ("image".equals(type)) {
contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
} else if ("video".equals(type)) {
contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
} else if ("audio".equals(type)) {
contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
}
final String selection = "_id=?";
final String[] selectionArgs = new String[] {
split[1]
};
return getDataColumn(context, contentUri, selection, selectionArgs);
}
}
// MediaStore (and general)
else if ("content".equalsIgnoreCase(uri.getScheme())) {
// Return the remote address
if (isGooglePhotosUri(uri))
return uri.getLastPathSegment();
return getDataColumn(context, uri, null, null);
}
// File
else if ("file".equalsIgnoreCase(uri.getScheme())) {
return uri.getPath();
}
return null;
}
/**
* Get the value of the data column for this Uri. This is useful for
* MediaStore Uris, and other file-based ContentProviders.
*
* @param context The context.
* @param uri The Uri to query.
* @param selection (Optional) Filter used in the query.
* @param selectionArgs (Optional) Selection arguments used in the query.
* @return The value of the _data column, which is typically a file path.
*/
public static String getDataColumn(Context context, Uri uri, String selection,
String[] selectionArgs) {
Cursor cursor = null;
final String column = "_data";
final String[] projection = {
column
};
try {
cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs,
null);
if (cursor != null && cursor.moveToFirst()) {
final int index = cursor.getColumnIndexOrThrow(column);
return cursor.getString(index);
}
} finally {
if (cursor != null)
cursor.close();
}
return null;
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is ExternalStorageProvider.
*/
public static boolean isExternalStorageDocument(Uri uri) {
return "com.android.externalstorage.documents".equals(uri.getAuthority());
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is DownloadsProvider.
*/
public static boolean isDownloadsDocument(Uri uri) {
return "com.android.providers.downloads.documents".equals(uri.getAuthority());
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is MediaProvider.
*/
public static boolean isMediaDocument(Uri uri) {
return "com.android.providers.media.documents".equals(uri.getAuthority());
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is Google Photos.
*/
public static boolean isGooglePhotosUri(Uri uri) {
return "com.google.android.apps.photos.content".equals(uri.getAuthority());
}
}
5.基本准备好了，现在来设置要显示的控件布局
<skxy.dev.safehttps.view.RoundImageView
android:id="@+id/iv"
android:layout_width="100dp"
android:layout_height="100dp"
android:layout_gravity="center"
android:src="@mipmap/ic_launcher"/>
6.处理点击和显示的逻辑
package skxy.dev.safehttps;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import skxy.dev.safehttps.view.RoundImageView;
public class PhontoActivity extends AppCompatActivity implements View.OnClickListener {
private static final int REQUEST_CODE_FROM_PHOTO = 0;
private static final int SELECT_CLIPPER_PIC = 1;
private static final int RESULT_CAMERA_ONLY = 100;
private Uri imageUri;
public RoundImageView mImageView;
public LinearLayout mView;
public TextView mFromPhoto;
public TextView mFromCamera;
public AlertDialog mDialog;
public String mFileName;
public Uri mImageCropUri;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_phonto);
initView();
initUri();
}
private void initView() {
mImageView = (RoundImageView) findViewById(R.id.iv);
mView = (LinearLayout) View.inflate(this, R.layout.dialogview, null);
mFromPhoto = (TextView) mView.findViewById(R.id.fromphoto);
mFromCamera = (TextView) mView.findViewById(R.id.fromcamera);
mImageView.setOnClickListener(this);
mFromCamera.setOnClickListener(this);
mFromPhoto.setOnClickListener(this);
}
private void initUri() {
File file;
File cropFile;
//必须在点击选择相册或相机之前初始化
if (hasSdcard()) {
File rootFile = new File(Environment.getExternalStorageDirectory() + "/DCIM/Camera");
if (!rootFile.exists()) {
rootFile.mkdir();
}
file = new File(rootFile + "/temp.jpg");
cropFile = new File(rootFile + "/temp_crop.jpg");
} else {
//如果没有外部存储卡，只能使用临时目录
file =new File(getCacheDir()+"/temp.jpg") ;
cropFile = new File(getCacheDir() + "/temp_crop.jpg");
}
imageUri = Uri.fromFile(file);
mImageCropUri = Uri.fromFile(cropFile);
}
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.iv:
showDialog();
break;
case R.id.fromcamera:
takeCameraOnly();
break;
case R.id.fromphoto:
goAlbums();
break;
}
}
private void showDialog() {
//因为每次点击后，这个布局视图就有了父容器，重新加载时就会附着到新的容器中，导致挂掉
//因此每次都先将父容器清空
ViewGroup p = (ViewGroup) mView.getParent();
if (p != null) {
p.removeAllViewsInLayout();
}
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setView(mView);
mDialog = builder.create();
mDialog.setCanceledOnTouchOutside(true);
mDialog.show();
}
//从相机获取
private void takeCameraOnly() {
if (hasSdcard()) {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra("return-data", false);
intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
intent.putExtra("outputFormat", Bitmap.CompressFormat.JPEG.toString());
intent.putExtra("noFaceDetection", true);
startActivityForResult(intent, RESULT_CAMERA_ONLY);
} else {
Toast.makeText(PhontoActivity.this, "没有可用的外部存储设备", Toast.LENGTH_SHORT).show();
}
}
//判断SD卡
private boolean hasSdcard() {
String state = Environment.getExternalStorageState();
if (state.equals(Environment.MEDIA_MOUNTED)) {
return true;
}
return false;
}
//从相册获取
private void goAlbums() {
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.addCategory(Intent.CATEGORY_OPENABLE);
intent.setType("image/*");
startActivityForResult(intent, REQUEST_CODE_FROM_PHOTO);
}
/**
* 裁剪大图
*
* @param context
* @param uri
*/
private void clipperBigPic(Context context, Uri uri) {
if (null == uri) {
return;
}
Intent intent = new Intent("com.android.camera.action.CROP");
//android大于4.4版本处理，否则挂掉
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
String url = PhotoClipperUtil.getPath(context, uri);
intent.setDataAndType(Uri.fromFile(new File(url)), "image/*");
}
//发送裁剪命令
intent.putExtra("crop", true);
//X方向上的比例
intent.putExtra("aspectX", 1);
//Y方向上的比例
intent.putExtra("aspectY", 1);
// 裁剪后输出图片的宽高像素
//裁剪区的宽
intent.putExtra("outputX", 120);
//裁剪区的高
intent.putExtra("outputY", 120);
//是否保留比例
intent.putExtra("scale", true);
//返回数据
intent.putExtra("return-data", true);
intent.putExtra("noFaceDetection", true);
//输出图片格式
intent.putExtra("outputFormat", Bitmap.CompressFormat.PNG.toString());
//裁剪图片保存位置
intent.putExtra(MediaStore.EXTRA_OUTPUT,mImageCropUri);
startActivityForResult(intent, SELECT_CLIPPER_PIC);
}
//处理返回的相片
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode != Activity.RESULT_OK)
return;
switch (requestCode) {
case REQUEST_CODE_FROM_PHOTO://相册选择
//获取图片后裁剪图片
clipperBigPic(this, data.getData());
break;
case SELECT_CLIPPER_PIC:
Bundle extras = data.getExtras();
if (extras != null) {
try {
//重新读取保存好的照片，已经裁剪过的，可以上传或直接设置到控件上
Bitmap bitmap = BitmapFactory.decodeStream(getContentResolver().openInputStream(mImageCropUri));
mImageView.setImageBitmap(bitmap);
mDialog.dismiss();
} catch (Exception e) {
e.printStackTrace();
}
}
break;
case RESULT_CAMERA_ONLY:
//相机返回的data获取不到uri,这是个坑
clipperBigPic(this, imageUri);
break;
}
}
/**
* 保存图片
*
* @param data
*/
private void saveBitmap(Intent data) {
Bundle bundle = data.getExtras();
if (bundle != null) {
Bitmap bitmap = bundle.getParcelable("data");
//存储图片的名字
mFileName = System.currentTimeMillis() + ".png";
File file = new File(Environment.getExternalStorageDirectory() + "/DCIM/Camera", mFileName);
try {
file.createNewFile();
FileOutputStream fileOutputStream = new FileOutputStream(file);
bitmap.compress(Bitmap.CompressFormat.PNG, 100, fileOutputStream);
fileOutputStream.flush();
fileOutputStream.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
7.最终效果,这里没有做Aandroid6.0的权限适配，需要的自己添加一下。
8.最后感谢那些大神提供的文章，这里列举几篇
http://blog.csdn.net/chenguang79/article/details/52230507
http://blog.csdn.net/harvic880925/article/details/43163175
http://www.2cto.com/kf/201401/270144.html