expert-app/app/src/main/java/cn/shangyu/gdxzExpert/activity/PdfViewActivity.java

package cn.shangyu.gdxzExpert.activity;

import android.content.Context;
import android.content.Intent;
import android.media.MediaMetadataRetriever;
import android.net.Uri;
import android.os.Build;
import android.view.View;
import android.widget.Toast;

import com.github.barteksc.pdfviewer.PDFView;
import com.github.barteksc.pdfviewer.listener.OnPageChangeListener;
import com.gyf.immersionbar.ImmersionBar;

import java.io.File;

import cn.shangyu.gdxzExpert.R;
import cn.shangyu.gdxzExpert.base.BaseActivity;
import cn.shangyu.gdxzExpert.utils.ToastUtil;
import cn.shangyu.gdxzExpert.utils.UIUtils;
import cn.shangyu.gdxzExpert.widget.LoadingPage;

/**
 * Created by wangchengxin on 2018/11/8.
 */

public class PdfViewActivity extends BaseActivity {
    private  String path;
    private File file;
    @Override
    public void setTitle() {
        String title = getIntent().getExtras().getString("title");
        top_title.setText(title);
        top_right.setVisibility(View.VISIBLE);
        top_right.setImageResource(R.drawable.share_icon);
        top_right.setOnClickListener(this);

    }
    @Override
    public View onCreateSuccessedView() {
        ImmersionBar.with(this).keyboardEnable(true).statusBarDarkFont(true).titleBar(mToolbar).init();
        View view = UIUtils.inflate(R.layout.activity_pdfview);

        path = getIntent().getExtras().getString("path");
//        Log.d("gdxzfile",path);
        file = new File(path);
        PDFView pdfView =  view.findViewById(R.id.pdfView);
        pdfView.fromFile(file).defaultPage(0).onPageChange(new OnPageChangeListener() {
            @Override
            public void onPageChanged(int page, int pageCount) {
                ToastUtil.showMessage((page+1) + " / " + pageCount);
            }
        }) .load();
//        initView(view);
        return view;
    }

    private void initView(View view) {

        PDFView pdfView =  view.findViewById(R.id.pdfView);
        pdfView.fromFile(file).defaultPage(0).onPageChange(new OnPageChangeListener() {
            @Override
            public void onPageChanged(int page, int pageCount) {
                ToastUtil.showMessage((page+1) + " / " + pageCount);
            }
        }) .load();

    }

    @Override
    public LoadingPage.ResultState onLoad() {
        return LoadingPage.ResultState.STATE_SUCCESSED;
    }

    @Override
    protected void processClick(View v) {
        switch (v.getId()){

            case R.id.top_right:
                shareFile(PdfViewActivity.this,file);
                break;
        }
    }


    public  void shareFile(Context context, File file) {
        if (null != file && file.exists()) {
            Intent share = new Intent(Intent.ACTION_SEND);
//            Intent share = new Intent(Intent.ACTION_VIEW);
//            share.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
//            String s2 = null;
//            try {
//                 s2 = new String(path.getBytes(),"utf-8");
//            } catch (UnsupportedEncodingException e) {
//                e.printStackTrace();
//            }
//            if(Build.VERSION.SDK_INT >= 24){
//                // 适配android7.0 ，不能直接访问原路径
//                // 需要对intent 授权
//                share.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
//                share.setDataAndType(FileProvider.getUriForFile(context, context.getPackageName() + ".fileprovider",new File(s2)),"application/octet-stream");
//            }
//            else{
//                share.setDataAndType(Uri.fromFile(new File(s2)), "application/octet-stream");
//            }
            Uri uri ;

//            Uri uri = Uri.fromFile(file);
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R)
            {
                uri = androidx.core.content.FileProvider
                        .getUriForFile(this, "cn.shangyu.gdxzExpert.fileprovider", file);
            }
           else
            {
                uri = Uri.fromFile(file);
            }
            share.putExtra(Intent.EXTRA_STREAM,uri );
            share.setType("image/jpeg");
            share.setType("application/octet-stream");

//            Log.d("gdxzfile","uri  "+uri);

//            share.setPackage("com.tencent.mm");
//            context.startActivity(share);
//            share.setType(getMimeType(file.getAbsolutePath()));//此处可发送多种文件
//            share.putExtra("Kdescription", "pdf文档");//微信朋友圈专用
//            share.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
//            share.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
            context.startActivity(Intent.createChooser(share, "分享文件"));
//            Intent intent=new Intent(Intent.ACTION_SEND);
//            intent.setType(getMimeType(file.getAbsolutePath()));//此处可发送多种文件
//            intent.putExtra(Intent.EXTRA_SUBJECT, "Share");
//            intent.putExtra(Intent.EXTRA_TEXT, "I have successfully share my message through my app");
//            intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
//            context.startActivity(Intent.createChooser(intent, "fdasfsadfsa"));
        } else {
            Toast.makeText(context, "分享文件不存在", Toast.LENGTH_SHORT).show();
        }
    }
    // 根据文件后缀名获得对应的MIME类型。
    private static String getMimeType(String filePath) {

        MediaMetadataRetriever mmr = new MediaMetadataRetriever();
        String mime = "*/*";
        if (filePath != null) {
            try {
                mmr.setDataSource(filePath);
                mime = mmr.extractMetadata(MediaMetadataRetriever.METADATA_KEY_MIMETYPE);
            } catch (IllegalStateException e) {
                return mime;
            } catch (IllegalArgumentException e) {
                return mime;
            } catch (RuntimeException e) {
                return mime;
            }
        }
        return mime;
    }
}