android - 将文本文件加载到 EditText 但文件被切断

Question

我正在将一个文本文件加载到 EditText 中，但该文件仅被部分加载。我尝试了两个不同的文件并得到相同的结果。一个文件在第 35 行和第 37 行中途被截断。不知道为什么。

<com.mobilewebtoolkit.EditTextLineNumbers
        android:id="@+id/ide"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_alignParentBottom="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentRight="true"
        android:layout_alignParentTop="true"
        android:ems="10"
        android:gravity="left"
        android:inputType="textMultiLine"
        android:lineSpacingExtra="5dp"
        android:textSize="15sp"
        android:visibility="visible" >

代码：

private void openFile(final File aFile) {
        String nullChk = et.getText().toString();
        if (!changed || nullChk.matches("")) {
            try {
                currentFile = aFile;

                getExt();

                et.setText(new Scanner(currentFile).useDelimiter("\\Z").next());
                changed = false;
                exists = true;
            } catch (FileNotFoundException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
        } else {
            AlertDialog.Builder alert = new AlertDialog.Builder(this);

            alert.setTitle("Save first?");
            alert.setMessage("(Will be saved in the current working directory)");

            alert.setPositiveButton("Yes",
                    new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface dialog,
                                int whichButton) {
                            String temptxt = et.getText().toString();

                            if (currentFile.exists()) {
                                try {
                                    saveFile(currentFile.getPath(), temptxt);
                                    currentFile = aFile;
                                    getExt();

                                } catch (NullPointerException e) {
                                    Log.i("NullPointer", currentFile.getName());
                                }
                                try {
                                    et.setText(new Scanner(currentFile)
                                            .useDelimiter("\\Z").next());

                                    getExt();

                                    if (extension.equals("txt")) {
                                        Toast.makeText(MainActivity.this,
                                                "Extension: " + extension,
                                                Toast.LENGTH_LONG).show();
                                    } else if (extension.equals("html")
                                            || extension.equals("htm")) {
                                        Toast.makeText(MainActivity.this,
                                                "Extension: " + extension,
                                                Toast.LENGTH_LONG).show();
                                    } else if (extension.equals("css")) {
                                        Toast.makeText(MainActivity.this,
                                                "Extension: " + extension,
                                                Toast.LENGTH_LONG).show();
                                    } else if (extension.equals("js")) {
                                        Toast.makeText(MainActivity.this,
                                                "Extension: " + extension,
                                                Toast.LENGTH_LONG).show();
                                    } else if (extension.equals("php")) {
                                        Toast.makeText(MainActivity.this,
                                                "Extension: " + extension,
                                                Toast.LENGTH_LONG).show();
                                    } else if (extension.equals("xml")) {
                                        Toast.makeText(MainActivity.this,
                                                "Extension: " + extension,
                                                Toast.LENGTH_LONG).show();
                                    }

                                    changed = false;
                                } catch (FileNotFoundException e) {
                                    // TODO Auto-generated catch block
                                    e.printStackTrace();
                                }
                            } else {
                                saveAs(null);
                            }
                        }
                    });
            final File tempFile = aFile;
            alert.setNegativeButton("No",
                    new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface dialog,
                                int whichButton) {
                            try {
                                et.setText(new Scanner(tempFile).useDelimiter(
                                        "\\Z").next());
                                changed = false;
                            } catch (FileNotFoundException e) {
                                // TODO Auto-generated catch block
                                e.printStackTrace();
                            }
                            changed = false;
                        }
                    });
            alert.setNeutralButton("Cancel",
                    new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface dialog,
                                int whichButton) {
                            changed = true;
                            dialog.cancel();
                        }
                    });

            alert.show();

        }
    }

Answer 1