Android 读取TXt,按行读取
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一个TXT 文件 对其进行读取，并且每行都单个存储读取
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);//从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() { //将读出来的一行行数据使用Map存储 String filePath = "/sdcard/sdl_log.txt";//手机上地址 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 正则表达式 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();//找不到文件情况下 } } catch (Exception e) { e.printStackTrace(); } return map; }}
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