一個TXT 文件 對其進行讀取，并且每行都單個存儲讀取
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
public class MainActivity extends AppCompatActivity { private TextView textView,textView2,textView3; private Button click; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); textView = (TextView) findViewById(R.id.textView); textView2 = (TextView) findViewById(R.id.textView2); textView3 = (TextView) findViewById(R.id.textView3); String s1 = Txt().get(0);//從Map get （key = 0）的value String s2 = Txt().get(1); String s3 = Txt().get(2); textView.setText(s1); textView2.setText(s2); textView3.setText(s3); } public Map<Integer, String> Txt() { //將讀出來的一行行數據使用Map存儲 String filePath = "/sdcard/sdl_log.txt";//手機上地址 Map<Integer, String> map = new HashMap<Integer, String>(); try { File file = new File(filePath); int count = 0;//初始化 key值 if (file.isFile() && file.exists()) { //文件存在的前提 InputStreamReader isr = new InputStreamReader(new FileInputStream(file)); BufferedReader br = new BufferedReader(isr); String lineTxt = null; while ((lineTxt = br.readLine()) != null) { // if (!"".equals(lineTxt)) { String reds = lineTxt.split("\\+")[0]; //java 正則表達式 map.put(count, reds);//依次放到map 0，value0;1,value2 count++; } } isr.close(); br.close(); }else { Toast.makeText(getApplicationContext(),"can not find file",Toast.LENGTH_SHORT).show();//找不到文件情況下 } } catch (Exception e) { e.printStackTrace(); } return map; }} |
以上這篇Android 讀取txt,按行讀取的實例講解就是小編分享給大家的全部內容了，希望能給大家一個參考，也希望大家多多支持服務器之家。
原文鏈接：https://blog.csdn.net/Damionew/article/details/71104589
