一个TXT 文件 对其进行读取，并且每行都单个存储读取
代码语言：javascript复制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;
}
}
以上这篇Android 读取txt,按行读取的实例讲解就是小编分享给大家的全部内容了，希望能给大家一个参考。
