Question

在此代码中，仅读取.txt文件中输入的最后一个单词。当条件满足时，我正在调用相同的活动。我应该对代码做出哪些更改，以便它读取一个单词，再次调用相同的活动，然后读取一个新单词？

public class Page extends Activity {

    Button b;
    TextView t;
    EditText e;
    int i = 0;
    String str2;
    String w, x=null;

    static BufferedReader c = null;
    static BufferedReader ic = null;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.page);
        b = (Button) findViewById(R.id.benter);
        t = (TextView) findViewById(R.id.tv);
        e = (EditText) findViewById(R.id.et);
        InputStream f = getResources().openRawResource(R.raw.incorrect);
        ic = new BufferedReader(new InputStreamReader(f));

        try {
            while ((w = ic.readLine()) != null) {
                    t.setText(w);
                    b.setOnClickListener(new View.OnClickListener() {
                        @Override
                        public void onClick(View v) {
                            str2 = e.getText().toString();

                            if (str2.equals(x)) {
                                Toast.makeText(getApplication(), "RIGHT", Toast.LENGTH_LONG).show();


                                Intent open = new Intent(Page.this, Page.class);
                                startActivity(open);

                            } else {
                                Toast.makeText(getApplication(), "WRONG", Toast.LENGTH_LONG).show();
                                e.setText("");
                            }
                        }
                    });


                }

        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

Answer 1

您可以使用此代码逐行读取文件

    try {
        FileReader fileReader = new FileReader("FilePath");
        BufferedReader reader = new BufferedReader(fileReader);
        String data = null;
        StringBuilder builder = new StringBuilder();
        while ((data = reader.readLine()) != null) {
            builder.append(data);
        }

        System.out.println(builder.toString());

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

在你的代码中你的onclick监听器有问题..请把onclick监听器放在while循环中..

Answer 2

onClickListener（）中存在minot错误：

public class Page extends Activity {

Button b;
TextView t;
EditText e;
int i = 0;
String str2;
String w, x=null;

static BufferedReader c = null;
static BufferedReader ic = null;


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.page);
    b = (Button) findViewById(R.id.benter);
    t = (TextView) findViewById(R.id.tv);
    e = (EditText) findViewById(R.id.et);
    InputStream f = getResources().openRawResource(R.raw.incorrect);
    ic = new BufferedReader(new InputStreamReader(f));

    try {
        while ((w = ic.readLine()) != null) {
                t.setText(w);
                b.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        str2 = e.getText().toString();
                        // it was str2.equals(x) nut x is null, replace w with x
                        if (str2.equals(w)) {
                            Toast.makeText(getApplication(), "RIGHT", Toast.LENGTH_LONG).show();


                            Intent open = new Intent(Page.this, Page.class);
                            startActivity(open);

                        } else {
                            Toast.makeText(getApplication(), "WRONG", Toast.LENGTH_LONG).show();
                            e.setText("");
                        }
                    }
                });


            }

    } catch (IOException e) {
        e.printStackTrace();
    }
}
}

此代码适用于您

Answer 3

你可以使用Apache Commons I / O库。这很简单。并保持你的代码美。为什么从资产中获取.txt文件？

AssetManager am = context.getAssets();
InputStream fs = am.open("a.txt");
List<String> lines = IOUtils.readLines(file,"UTF-8");

Answer 4

您可以将文本文件保存在＆＃34;资产＆＃34;项目文件夹，并使用以下代码在java类中检索该文件

 try {
    reader = new BufferedReader(
            new InputStreamReader(getAssets().open("YOUR_TEXT_FILE.txt")));
    StringBuilder total = new StringBuilder();
    String line;
    while ((line = reader.readLine()) != null) {
        total.append(line);
    }
    message=total.toString();
    System.out.println(message);
} catch (IOException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
}

之后，您将在String消息中包含该文件

Answer 5

您的计划正在阅读最后一行，因为您正在覆盖您的＆＃39; w＆＃39;每次调用readLine（）方法时都会变量。你应该做的是设置你的＆＃39; w＆＃39;变量为空，追加与readLine（）一起保留文本文件中已读取的所有行，然后调用setText（）一次将所有内容放在View中。没有附加，你基本上覆盖了＆＃39; w＆＃39;每次while循环运行时变量，这就是你从文本文件接收最后一行的原因。

如何在android中逐行阅读.text文档？

5 个答案: