看图效果如下：
1.个人资料界面
2.点击头像弹出对话框
3.点击拍照
4.切割图片，选择合适的部分
5.点击保存，头像替换完毕，下面看从相册中选择图片。
6.点击相册
7.任选一张图片
8.切割图片
9.图片替换成功
亲测退出账户后重新登陆或者换模拟器登陆有效！！！
图片已经上传到云端了！！！
下面先上xml代码：
里面出现的可能报错的代码都是bmob云IM DEMO照搬的，这里不再提供代码或者图片。
上一个Bmob云IM DEMO下载地址（https://github.com/chaozhouzhang/bmob-newim-demo），这个是官方DEMO
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/my_layout_all"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/theme_bg_color"
android:orientation="vertical" > <include layout="@layout/include_navi"/> <RelativeLayout
android:id="@+id/my_layout_head"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/about_top_bg"
android:minHeight="80dp"
android:paddingLeft="10dp"
android:paddingRight="10dp" > <TextView
style="@style/style_text_black"
android:layout_alignParentLeft="true"
android:layout_centerVertical="true"
android:text="@string/add_avator" /> <LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:gravity="center_vertical"
android:orientation="horizontal" > <ImageView
android:id="@+id/my_iv_avator"
android:layout_alignParentRight="true"
android:layout_width="@dimen/height_50"
android:layout_height="@dimen/height_50"
android:layout_alignParentLeft="true"
android:layout_marginTop="@dimen/margin_12"
android:layout_marginBottom="@dimen/margin_12"
android:layout_marginLeft="@dimen/margin_16"
android:src="@mipmap/head" />
</LinearLayout> </RelativeLayout> <RelativeLayout
android:id="@+id/my_layout_name"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@drawable/about_mid_bg"
android:padding="10dp" > <TextView
style="@style/style_text_black"
android:layout_alignParentLeft="true"
android:layout_centerVertical="true"
android:text="@string/add_name" /> <TextView
android:id="@+id/my_tv_name"
style="@style/style_text_black"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:layout_marginRight="20dp"
android:drawablePadding="10dp" />
</RelativeLayout> </LinearLayout>
下面是JAVA代码：
package cn.bmob.imdemo.ui; import android.content.DialogInterface;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.support.v7.app.AlertDialog;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast; import java.io.File;
import java.util.HashMap;
import java.util.Map; import butterknife.Bind;
import butterknife.ButterKnife;
import butterknife.OnClick;
import cn.bmob.imdemo.R;
import cn.bmob.imdemo.base.ImageLoaderFactory;
import cn.bmob.imdemo.base.ParentWithNaviActivity;
import cn.bmob.imdemo.bean.AddFriendMessage;
import cn.bmob.imdemo.bean.User;
import cn.bmob.imdemo.model.UserModel;
import cn.bmob.newim.BmobIM;
import cn.bmob.newim.bean.BmobIMConversation;
import cn.bmob.newim.bean.BmobIMMessage;
import cn.bmob.newim.bean.BmobIMUserInfo;
import cn.bmob.newim.core.BmobIMClient;
import cn.bmob.newim.listener.MessageSendListener;
import cn.bmob.v3.BmobUser;
import cn.bmob.v3.datatype.BmobFile;
import cn.bmob.v3.exception.BmobException;
import cn.bmob.v3.listener.UpdateListener;
import cn.bmob.v3.listener.UploadFileListener; /**
* 用户资料
*/
public class MyUserInfoActivity extends ParentWithNaviActivity { @Bind(R.id.my_iv_avator)
ImageView iv_avator;
@Bind(R.id.my_tv_name)
TextView tv_name; private File mFile; private Bitmap mBitmap; String path = ""; public static final int TAKE_PHOTO = 1; public static final int CHOOSE_PHOTO = 2; public static final int CUT_PHOTO = 3; //用户
User user;
//用户信息
BmobIMUserInfo info; @Override
protected String title() {
return "个人资料";
} @Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_my_user_info);
ButterKnife.bind(this);
//导航栏
initNaviView();
//用户
user = (User) getBundle().getSerializable("u"); //构造聊天方的用户信息:传入用户id、用户名和用户头像三个参数
info = new BmobIMUserInfo(user.getObjectId(), user.getUsername(), user.getAvatar());
//加载头像
ImageLoaderFactory.getLoader().loadAvator(iv_avator, user.getAvatar(), R.mipmap.head);
//显示名称
tv_name.setText(user.getUsername()); iv_avator.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
String title = "选择获取图片方式";
String[] items = new String[]{"拍照", "相册"}; new AlertDialog.Builder(MyUserInfoActivity.this)
.setTitle(title)
.setItems(items, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
switch (which) {
case 0:
//选择拍照
pickImageFromCamera();
break;
case 1:
//选择相册
pickImageFromAlbum();
break;
default:
break;
}
}
}).show();
}
});
} //拍照
public void pickImageFromCamera(){
String state = Environment.getExternalStorageState();
if (state.equals(Environment.MEDIA_MOUNTED)) {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
File file = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
if (!file.exists()) {
file.mkdirs();
}
mFile = new File(file, System.currentTimeMillis() + ".jpg");
intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(mFile));
intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 1);
startActivityForResult(intent, TAKE_PHOTO);
} else {
Toast.makeText(this, "请确认已经插入SD卡", Toast.LENGTH_SHORT).show();
}
}
//从相册获取图片
public void pickImageFromAlbum(){
Intent picIntent = new Intent(Intent.ACTION_PICK, null);
picIntent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, "image/*");
startActivityForResult(picIntent, CHOOSE_PHOTO);
} @Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK) {
switch (requestCode) {
case TAKE_PHOTO:
startPhotoZoom(Uri.fromFile(mFile));
break;
case CHOOSE_PHOTO: if (data == null || data.getData() == null) {
return;
}
try {
Bitmap bm = null;
Uri originalUri = data.getData(); //获得图片的uri bm = MediaStore.Images.Media.getBitmap(getContentResolver(), originalUri); //显得到bitmap图片 //这里开始的第二部分，获取图片的路径： String[] proj = {MediaStore.Images.Media.DATA}; //好像是android多媒体数据库的封装接口，具体的看Android文档 Cursor cursor = managedQuery(originalUri, proj, null, null, null); //按我个人理解 这个是获得用户选择的图片的索引值 int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA); //将光标移至开头 ，这个很重要，不小心很容易引起越界 cursor.moveToFirst(); //最后根据索引值获取图片路径 path = cursor.getString(column_index);
}catch (Exception e){
e.printStackTrace();
} startPhotoZoom(data.getData()); break;
case CUT_PHOTO: if (data != null) {
setPicToView(data);
}
break; }
} }
/**
* 打开系统图片裁剪功能
*
* @param uri uri
*/
private void startPhotoZoom(Uri uri) {
Intent intent = new Intent("com.android.camera.action.CROP");
intent.setDataAndType(uri, "image/*");
intent.putExtra("crop", true);
intent.putExtra("aspectX", 1);
intent.putExtra("aspectY", 1);
intent.putExtra("outputX", 300);
intent.putExtra("outputY", 300);
intent.putExtra("scale", true); //黑边
intent.putExtra("scaleUpIfNeeded", true); //黑边
intent.putExtra("return-data", true);
intent.putExtra("noFaceDetection", true);
startActivityForResult(intent, CUT_PHOTO); }
private void setPicToView(Intent data) {
Bundle bundle = data.getExtras();
if (bundle != null) { //
// Uri selectedImage = data.getData();
//
// String[] filePathColumn = { MediaStore.Images.Media.DATA };
//
// Cursor cursor = getContentResolver().query(selectedImage,
// filePathColumn, null, null, null);
// cursor.moveToFirst();
//
// int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
// String picturePath = cursor.getString(columnIndex);
// //这里也可以做文件上传
mBitmap = bundle.getParcelable("data");
// ivHead.setImageBitmap(mBitmap);
iv_avator.setImageBitmap(mBitmap);
//
// if (picturePath!=null){
// path = picturePath;
// } if(mFile != null){
path = mFile.getPath();
} Toast.makeText(MyUserInfoActivity.this,"path:"+path,Toast.LENGTH_SHORT).show(); final BmobFile bmobFile = new BmobFile(new File(path));
//Bmob这个上传文件的貌似不成功..........................
bmobFile.uploadblock(new UploadFileListener() { @Override
public void done(BmobException e) {
if (e == null) {
Toast.makeText(MyUserInfoActivity.this, "pic is success", Toast.LENGTH_SHORT).show();
// MyUser myUser =MyUser.getCurrentUser(MyUser.class);
//得到上传的图片地址
String fileUrl = bmobFile.getFileUrl();
user.setAvatar(fileUrl);
//更新图片地址
user.update(user.getObjectId(), new UpdateListener() {
@Override
public void done(BmobException e) {
if (e == null) {
Toast.makeText(MyUserInfoActivity.this, "update", Toast.LENGTH_SHORT).show(); }
}
});
}
}
}); }
}
}
我也是参考了N多博客大神的代码才写出来的，写在这供大家参考，希望大家多多发扬开源的精神。