android判断EditText输入的数字、中文还是字母方法

String txt = edInput.getText().toString();

Pattern p = Pattern.compile("[0-9]*"); 
     Matcher m = p.matcher(txt); 
     if(m.matches() ){
      Toast.makeText(Main.this,"输入的是数字", Toast.LENGTH_SHORT).show();
      } 
     p=Pattern.compile("[a-zA-Z]");
     m=p.matcher(txt);
     if(m.matches()){
      Toast.makeText(Main.this,"输入的是字母", Toast.LENGTH_SHORT).show();
     }
     p=Pattern.compile("[\u4e00-\u9fa5]");
     m=p.matcher(txt);
     if(m.matches()){
      Toast.makeText(Main.this,"输入的是汉字", Toast.LENGTH_SHORT).show();
     }