从文本文件读出的数据和在TextView的显示它 [英] reading data from a textfile and displaying it on the textview

问题描述

我试图读取一个文本TEMP.TXT，这是在我的原始文件夹中的数据和文本视图文本显示文件的内容，只要一个按钮的按钮被点击，但我的应用程序崩溃而这样做，有相当多的可能性，我这样做了错误的方式，因为我是新来的Andr​​oid和Java编程。我在这里粘贴code，任何帮助将AP preciated

i am trying to read data from a textfile "temp.txt" which is in my raw folder and displaying the contents of the file on the text view "text" whenever a button "button" is clicked, but my app crashes while doing so, there is quite a possibility that i am doing it in a wrong way because i am new to android and java programming. i am pasting the code here, any help will be appreciated

情况下R.id.b：

        InputStream is = getResources().openRawResource(R.raw.temp);
        BufferedReader br = new BufferedReader(new InputStreamReader(is));
        try {
            string = br.readLine();
            while(string != null){
                st = string;
            }
            text.setText(st);

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

ST和串都是字符串变量。我会很高兴，如果任何人都可以在其他简单的方法指出，做同样的。

"st" and "string" are both string variables. i will be glad if anyone can point out at another simple method to do the same.

推荐答案

更改为以下内容：

InputStream is = getResources().openRawResource(R.raw.temp);
BufferedReader br = new BufferedReader(new InputStreamReader(is));
String line; 
String entireFile = "";
try {
    while((line = br.readLine()) != null) { // <--------- place readLine() inside loop
        entireFile += (line + "\n"); // <---------- add each line to entireFile
    }
} catch (IOException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
}
text.setText(entireFile); // <------- assign entireFile to TextView
break;

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