开发冲刺七

今天是真的吐了，本以为昨天已经成功吧文件导入了as，但是在今天运行是才暴露出了问题，刚开始一直报缺少某个NDK，从setting中下载与当前SDK符合的NDK后报找不到NDK，在网页上查找了无数的答案，就是解决不了，卸载后重新下载了一个3.52版本的还是不行，但是这次暴露出了真正的问题，是因为AS版本不够高，运行这个工程需要3.6及以上的版本，下载好最新版本之后终于可以运行了，

补：

冲刺内容：生成二维码并且可以保存在本地相册

冲刺结果：

1：

 

2：

源代码：

ShareImgActivity.java

package com.example.meet.UI;

import android.content.ContentValues;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.view.View;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.TextView;
import android.widget.Toast;

import androidx.cardview.widget.CardView;

import com.example.framework.base.BaseBackActivity;
import com.example.framework.bmob.BmobManager;
import com.example.framework.bmob.MyMeetUser;
import com.example.framework.helper.GlideHelper;
import com.example.framework.view.LoadingView;
import com.example.meet.R;

import com.uuzuche.lib_zxing.activity.CodeUtils;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;


public class ShareImgActivity extends BaseBackActivity implements View.OnClickListener {

    //头像
    private ImageView iv_photo;
    //昵称
    private TextView tv_name;
    //性别
    private TextView tv_sex;
    //年龄
    private TextView tv_age;
    //电话
    private TextView tv_phone;
    //简介
    private TextView tv_desc;
    //二维码
    private ImageView iv_qrcode;
    //根布局
    private LinearLayout ll_content;
    //下载
    private LinearLayout ll_download;

    private LoadingView mLodingView;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_share_img);

        initView();
    }

    private void initView() {

        mLodingView =new LoadingView(this);
        mLodingView.setText("正在保存");

        iv_photo = (ImageView) findViewById(R.id.iv_photo);
        tv_name = (TextView) findViewById(R.id.tv_name);
        tv_sex = (TextView) findViewById(R.id.tv_sex);
        tv_age = (TextView) findViewById(R.id.tv_age);
        tv_phone = (TextView) findViewById(R.id.tv_phone);
        tv_desc = (TextView) findViewById(R.id.tv_desc);
        iv_qrcode = (ImageView) findViewById(R.id.iv_qrcode);
        ll_content = (LinearLayout) findViewById(R.id.ll_content);
        ll_download = (LinearLayout) findViewById(R.id.ll_download);

        ll_download.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                /*
                *
                * */
                mLodingView.show();
                //绘制时保存缓存
                ll_content.setDrawingCacheEnabled(true);
                ll_content.measure(
                        View.MeasureSpec.makeMeasureSpec(0,View.MeasureSpec.UNSPECIFIED),
                        View.MeasureSpec.makeMeasureSpec(0,View.MeasureSpec.UNSPECIFIED));
                ll_content.layout(0,0,ll_content.getMeasuredWidth(),
                        ll_content.getMeasuredHeight());
                Bitmap mBitmap=ll_content.getDrawingCache();
                if(mBitmap!=null)
                {
                    saveBitmapToAlbum(mBitmap);
                }
            }
        });
        loadInfo();
        


    }
        //保存Bitmap到相册
    private void saveBitmapToAlbum( Bitmap mBitmap) {
        File rootPath = new File(Environment.getExternalStorageDirectory()+"/Meet/");

        if(!rootPath.exists())
        {
            rootPath.mkdirs();
        }

        File file=new File(rootPath,System.currentTimeMillis()+".png");
        try {
            FileOutputStream out = new FileOutputStream(file);
            //自带保存方法
            mBitmap.compress(Bitmap.CompressFormat.PNG,90,out);
                out.flush();
                out.close();

                mLodingView.hide();
                Toast.makeText(this,"保存成功",Toast.LENGTH_SHORT).show();
                //刷新图库，同步到手机相册
            sendBroadcast(new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE,Uri.fromFile(file)));
                //updateAlnum(file.getPath());


        } catch (IOException e) {
            mLodingView.hide();
            Toast.makeText(this,"保存失败",Toast.LENGTH_SHORT).show();


        }
    }


    //创建二维码
    private void createQRCode(final String userId) {
        //必须先绘制View否则宽高回事0，而参数不可为零
        iv_qrcode.post(new Runnable() {
            @Override
            public void run() {
                String textContent = "Meet#"+userId;
                Bitmap mBitmap = CodeUtils.createImage(textContent,iv_qrcode.getWidth(),iv_qrcode.getHeight(), null);
                iv_qrcode.setImageBitmap(mBitmap);
            }
        });


    }

    //加载个人信息
    private void loadInfo() {
        MyMeetUser myMeetUser=BmobManager.getInstance().getCurrentUser();
        GlideHelper.loadUrl(this, myMeetUser.getPhoto(), iv_photo);
        tv_name.setText(myMeetUser.getNickName());
        tv_sex.setText(myMeetUser.isSex() ? R.string.text_me_info_boy : R.string.text_me_info_girl);
        tv_age.setText(myMeetUser.getAge() + " " + getString(R.string.text_search_age));
        tv_phone.setText(myMeetUser.getMobilePhoneNumber());
        tv_desc.setText(myMeetUser.getDesc());

        createQRCode(myMeetUser.getObjectId());
    }


    @Override
    public void onClick(View v) {

    }
}

MeFragment.java

package com.example.meet.fragment;

import android.content.Intent;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.LinearLayout;
import android.widget.TextView;

import androidx.fragment.app.Fragment;

import com.example.framework.bmob.BmobManager;
import com.example.framework.bmob.MyMeetUser;
import com.example.framework.helper.GlideHelper;
import com.example.meet.R;
import com.example.meet.UI.NewFriendActivity;
import com.example.meet.UI.PrivateSetActivity;
import com.example.meet.UI.ShareImgActivity;

import de.hdodenhof.circleimageview.CircleImageView;

/**
 * A simple {@link Fragment} subclass.
 */
public class MeFragment extends Fragment {

    private CircleImageView ivMePhoto;
    private TextView tvNickname;
    private TextView tvServerStatus;
    private LinearLayout llMeInfo;
    private LinearLayout llNewFriend;
    private LinearLayout llPrivateSet;
    private LinearLayout llShare;
    private LinearLayout llNotice;
    private LinearLayout llSetting;

    public MeFragment() {

    }


    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment

        View view = inflater.inflate(R.layout.fragment_me, container, false);
        initView(view);
        return view;
    }

    private void initView(View view){
        ivMePhoto = (CircleImageView) view.findViewById(R.id.iv_me_photo);
        tvNickname = (TextView) view.findViewById(R.id.tv_nickname);
        tvServerStatus = (TextView) view.findViewById(R.id.tv_server_status);
        llMeInfo = (LinearLayout) view.findViewById(R.id.ll_me_info);
        llNewFriend = (LinearLayout) view.findViewById(R.id.ll_new_friend);
        llPrivateSet = (LinearLayout) view.findViewById(R.id.ll_private_set);
        llShare = (LinearLayout) view.findViewById(R.id.ll_share);
        llNotice = (LinearLayout) view.findViewById(R.id.ll_notice);
        llSetting = (LinearLayout) view.findViewById(R.id.ll_setting);
        loadMeInfo();
        llNewFriend.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                startActivity(new Intent(getActivity(), NewFriendActivity.class));
            }
        });
        llShare.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                startActivity(new Intent(getActivity(),ShareImgActivity.class));
            }
        });
        llPrivateSet.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                startActivity(new Intent(getActivity(), PrivateSetActivity.class));
            }
        });
    }

    /**
     * 加载我的信息
     */
    private void loadMeInfo() {
        MyMeetUser user = BmobManager.getInstance().getCurrentUser();
        GlideHelper.loadUrl(getActivity(),user.getPhoto(),ivMePhoto);
        tvNickname.setText(user.getTokenNickName());
    }
}

FileHelper.java

package com.example.framework.helper;

import android.app.Activity;
import android.content.ContentValues;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Build;
import android.os.Environment;
import android.os.ParcelFileDescriptor;
import android.provider.MediaStore;
import android.text.TextUtils;
import android.widget.Toast;

import androidx.core.content.FileProvider;
import androidx.core.os.EnvironmentCompat;
import androidx.loader.content.CursorLoader;


import com.example.framework.utils.LogUtils;

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileDescriptor;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;

public class FileHelper {



    private static volatile FileHelper mInstnce = null;
    private SimpleDateFormat simpleDateFormat;
    private File tempFile = null;
    private Uri imageUri;
    //相机
    public static final int CAMERA_REQUEST_CODE = 1004;
    //相册
    public static final int ABLUM_REQUEST_CODE = 1005;


    public FileHelper(){
        simpleDateFormat = new SimpleDateFormat("yyyy_MM_dd_HH_mm_ss");
    }


    public static FileHelper getInstance() {
        if (mInstnce == null) {
            synchronized (FileHelper.class) {
                if (mInstnce == null) {
                    mInstnce = new FileHelper();
                }
            }
        }
        return mInstnce;
    }


    /**
     * 使用相机
     * @param activity
     */
    public void toCamera(Activity activity){
        try {
            Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
            String fileName = simpleDateFormat.format(new Date());
            tempFile = new File(Environment.getExternalStorageDirectory(), fileName + ".jpg");
            //兼容Android N
            if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N) {
                imageUri = Uri.fromFile(tempFile);
            } else {
                //利用FileProvider
                imageUri = FileProvider.getUriForFile(activity,
                        activity.getPackageName() + ".fileprovider", tempFile);
                //添加权限
                intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION |
                        Intent.FLAG_GRANT_WRITE_URI_PERMISSION);
            }
            intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
            activity.startActivityForResult(intent,CAMERA_REQUEST_CODE);
        } catch (Exception e) {
            Toast.makeText(activity, "无法打开相机", Toast.LENGTH_SHORT).show();
            e.printStackTrace();
        }
    }


    /**
     * 跳转到相册
     * @return
     */
    public void toAblum(Activity activity){
        Intent intent = new Intent(Intent.ACTION_PICK);
        intent.setType("image/*");
        activity.startActivityForResult(intent,ABLUM_REQUEST_CODE);
    }


    public File getTempFile() {
        return tempFile;
    }

    public Uri getImageUri() {
        return imageUri;
    }


    //获取拍照和选取的图片的绝对路径
    public String getRealPathFromURI(Activity activity, Uri contentUri) {
        Context context = activity.getApplicationContext();
        File rootDataDir = context.getExternalFilesDir(null);
//        MyApplication.getMyContext().getExternalFilesDir(null).getPath();
        String fileName = getFileName(contentUri);
        if (!TextUtils.isEmpty(fileName)) {
            File copyFile = new File(rootDataDir + File.separator + fileName);
            copyFile(context, contentUri, copyFile);
            return copyFile.getAbsolutePath();
        }
        return null;
    }
    public String getFileName(Uri uri) {
        if (uri == null) return null;
        String fileName = null;
        String path = uri.getPath();
        int cut = path.lastIndexOf('/');
        if (cut != -1) {
            fileName = path.substring(cut + 1);
        }
        return fileName;
    }

    public void copyFile(Context context, Uri srcUri, File dstFile) {
        try {
            InputStream inputStream = context.getContentResolver().openInputStream(srcUri);
            if (inputStream == null) return;
            OutputStream outputStream = new FileOutputStream(dstFile);
            copyStream(inputStream, outputStream);
            inputStream.close();
            outputStream.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public int copyStream(InputStream input, OutputStream output) throws Exception, IOException {
        final int BUFFER_SIZE = 1024 * 2;
        byte[] buffer = new byte[BUFFER_SIZE];
        BufferedInputStream in = new BufferedInputStream(input, BUFFER_SIZE);
        BufferedOutputStream out = new BufferedOutputStream(output, BUFFER_SIZE);
        int count = 0, n = 0;
        try {
            while ((n = in.read(buffer, 0, BUFFER_SIZE)) != -1) {
                out.write(buffer, 0, n);
                count += n;
            }
            out.flush();
        } finally {
            try {
                out.close();
            } catch (IOException e) {
            }
            try {
                in.close();
            } catch (IOException e) {
            }
        }
        return count;
    }





}
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原文地址：https://www.cnblogs.com/yizhixiaozhu/p/12770373.html