如何在原始Android中的PDF文件

问题描述

如何创建一个PDF FIEL原..Eventhough我使用需要iText.jar我是歌厅的错误中指定文件未找到错误，并说文件无法打开。这里是code

/ **第一次创建活动时调用。 * /

 的EditText EDITTEXT;
Button按钮;
私有静态字符串文件=C：/FirstPdf.pdf;
字符串的身体;
@覆盖
公共无效的onCreate（包savedInstanceState）{
    super.onCreate（savedInstanceState）;
    的setContentView（R.layout.main）;

    EDITTEXT =（EditText上）findViewById（R.id.editText1）;
    按钮=（按钮）findViewById（R.id.button1）;
    button.setOnClickListener（新View.OnClickListener（）{

        @覆盖
        公共无效的onClick（视图v）{
            // TODO自动生成方法存根
            。身体= editText.getText（）的toString（）;

            文献文件=新的文件（）;
            尝试 {
                PdfWriter.getInstance（文件，新的FileOutputStream（文件））;
                document.open（）;
                document.addSubject（体）;
                document.close（）;
            }赶上（例外五）{
                // TODO自动生成的catch块
                e.printStackTrace（）;
            }
        }
    }）;

}
 

解决方案

 的EditText EDITTEXT;
Button按钮;
私有静态字符串FILE =;
 字符串的身体;
@覆盖
公共无效的onCreate（包savedInstanceState）{
super.onCreate（savedInstanceState）;
的setContentView（R.layout.main）;
FILE =（Environment.getExternalStorageDirectory（）getAbsolutePath（））;
EDITTEXT =（EditText上）findViewById（R.id.editText1）;
按钮=（按钮）findViewById（R.id.button1）;
button.setOnClickListener（新View.OnClickListener（）{

    @覆盖
    公共无效的onClick（视图v）{
        // TODO自动生成方法存根
        。身体= editText.getText（）的toString（）;

        文献文件=新的文件（）;
        尝试 {
             文件临时=新的文件（FILE.getAbsolutePath（），abcd.pdf）;
            PdfWriter.getInstance（文件，新的FileOutputStream（临时））;
            document.open（）;
            document.addSubject（体）;
            document.close（）;
        }赶上（例外五）{
            // TODO自动生成的catch块
            e.printStackTrace（）;
        }
    }
}）;

}
 

没有C：在Android中使用Environment.getExternalStorageDirectory（）getAbsolutePath（）来获得外部存储路径

在清单中添加权限写入外部存储

How to Create A PDF fiel in raw ..Eventhough I Was using iText.jar I was geting an error specifying File Not Found Error and also saying File cannot be Opened .Here is the code

/** Called when the activity is first created. */

EditText editText;
Button button;
private static String FILE = "C:/FirstPdf.pdf";
String body ;
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    editText = (EditText)findViewById(R.id.editText1);
    button = (Button) findViewById(R.id.button1);
    button.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            body = editText.getText().toString();

            Document document = new Document();
            try {
                PdfWriter.getInstance(document, new FileOutputStream(FILE));
                document.open();
                document.addSubject(body);
                document.close();
            } catch (Exception e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        }
    });

}

解决方案

EditText editText;
Button button;
private static String FILE = "";
 String body ;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
FILE=(Environment.getExternalStorageDirectory().getAbsolutePath());
editText = (EditText)findViewById(R.id.editText1);
button = (Button) findViewById(R.id.button1);
button.setOnClickListener(new View.OnClickListener() {

    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub
        body = editText.getText().toString();

        Document document = new Document();
        try {
             File temp = new File(FILE.getAbsolutePath(),"abcd.pdf");
            PdfWriter.getInstance(document, new FileOutputStream(temp));
            document.open();
            document.addSubject(body);
            document.close();
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
});

}

there is no C: in android use Environment.getExternalStorageDirectory().getAbsolutePath() to get external storage path

in manifest add permission to write external storage

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