单击列表视图项使用第三方打开Pdf文件 [英] Open Pdf file using third party on click on list view item

问题描述

我的资源文件夹中有PDF文件，现在我可以在列表视图中查看PDF文件。但现在问题是点击任何pdf我要在我的pdf查看器中打开pdf 。这是我的代码

I have PDF files in my assets folder now i am able to view that PDF files in list view .But the problem is now on click of any pdf i want to open pdf in my pdf viewer. Here is my code

<pre lang="java">public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        AssetManager asset = getAssets();
        try {
            final String[] arrdata = asset.list("PDFfolder");
            List<String> pdflist = new ArrayList<String>();
            int size = arrdata.length;
            for(int i = 0;i<size;i++)
            {
              if(arrdata[i].contains(".pdf"))

              {
                pdflist.add(arrdata[i]); 
               }
            }
            ArrayAdapter<String> adapter= new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1,pdflist);
            ListView listView = (ListView) findViewById(R.id.listView1);
            listView.setAdapter(adapter);
                    listView.setOnItemClickListener(new OnItemClickListener() {

            @Override
             public void onItemClick(AdapterView<?> parent, View view,
                        int position, long id) {
                if(position == 0 ) {
                    File pdffile = new File("file:///android_assets/AAI.pdf");
                    //File ff = new File(getAssets().open("AAI.pdf"));
                     Uri path = Uri.fromFile(pdffile);
                     Intent intent = new Intent(Intent.ACTION_VIEW);
                     intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                     intent.setDataAndType(path, "application/pdf");
                     startActivity(intent);    
                     }

                }

        });
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

     }
}

现在请帮我解决如何使用我的资产文件夹中的意图打开它。我发现没有找到处理意图的活动的错误，因为我手机中已经有pdfviewer。

Now please help me out how to open it using intent from my assets folder. i am getting error of having no activity found to handle intent as i already have pdfviewer in my phone.

推荐答案

使用

Use

String out= Environment.getExternalStorageDirectory().getAbsolutePath() + "/X/Y/Z/" ;

       File outFile = new File(out, Filename);

在您的参考编辑后。链接答案。

After Editing in your ref. Link Answer.

  private void copyAssets() {
    AssetManager assetManager = getAssets();
    String[] files = null;
try {
    files = assetManager.list("");
} catch (IOException e) {
    Log.e("tag", "Failed to get asset file list.", e);
  }
 for(String filename : files) {
    InputStream in = null;
    OutputStream out = null;
    try {
      in = assetManager.open(filename);

      String out= Environment.getExternalStorageDirectory().getAbsolutePath() + "/X/Y/Z/" ; 

        File outFile = new File(out, Filename);


      out = new FileOutputStream(outFile);
      copyFile(in, out);
      in.close();
      in = null;
      out.flush();
      out.close();
        out = null;
      } catch(IOException e) {
          Log.e("tag", "Failed to copy asset file: " + filename, e);
         }       
       }
     }
     private void copyFile(InputStream in, OutputStream out) throws IOException {
        byte[] buffer = new byte[1024];
      int read;
     while((read = in.read(buffer)) != -1){
       out.write(buffer, 0, read);
     }
   }

完成PDF显示后，你可以从存储中删除

After you finish showing your PDF u can just deleted from storage

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