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java - 为 APKlevel 30 写作

问题描述

我如何将 PDF 写入我的“文档”地图（android 11）

现在我正在使用下面的代码。

//写文档

    String werfnummer = (String.valueOf(edittextwerf.getText()));

    werfnummer = werfnummer.substring(0, 7);

    //  data = data.substring(1,data.length()-1);

    File targetPdf = getExternalFilesDir(edittextwerf.getText() + "/Slag_Results/");
    File filePath = new File(targetPdf, werfnummer + "_" + plaatsSlg + "_" + nummer.getText() + ".PDF");
    try {
        document.writeTo(new FileOutputStream(filePath));
        laatsteFile = String.valueOf(werfnummer + "_" + plaatsSlg + "_" + nummer.getText() + ".PDF");
        Toast.makeText(this, werfnummer + "_" + plaatsSlg + "_" + nummer.getText() + ".PDF  bewaard !!", Toast.LENGTH_LONG).show();   //voorheen dateString
        final Button buttonPDFview = (Button) findViewById(R.id.button2);
        buttonPDFview.setEnabled(true);
    } catch (IOException e) {
        e.printStackTrace();
        Toast.makeText(this, "Something wrong: " + e.toString(),
                Toast.LENGTH_LONG).show();
    }

标签： javaandroidapk

解决方案

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