Android文档次数统计——统计文档字符数，行数，单词数

主要代码：
private void analysis() {
String str="";

int words = 0;//单词数
int chars = 0;//字符数
int lines = 0;//行数

String filename=et_name.getText().toString();
FileInputStream fis=null;
BufferedReader br=null;
try {
    //判断是否具有读写权限
    if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
        File file = new File(Environment.getExternalStorageDirectory().getCanonicalPath() + "/"+filename+".txt");
        if (file.exists()){//判断文件是否存在
            fis=new FileInputStream(file);
            br=new BufferedReader(new InputStreamReader(fis));
            while((str=br.readLine())!=null){
                char[] b=str.toCharArray();
                for (int i = 0; i < str.length(); i++) {
                    if (b[i]==' '){
                        spaces++;//空格数
                    }else if (b[i]==','||b[i]=='.'){
                        marks++;

                    }
                }
               
                words+=str.split("[ \.,]").length;
                chars+=str.length();//字符串的长度
                lines++;//行数
            }
            character=chars-(spaces+marks);//字母数
            br.close();

            tv_read.setText("单词数："+words+",字符数："+chars+",行数："+lines+");
        }
        else {
            Toast.makeText(this, "不存在该文件", Toast.LENGTH_SHORT).show();
        }
    }
} catch (Exception e) {
    e.printStackTrace();
}

}
布局代码：

保存文件：
private void write() { String filename=text.getText().toString(); String filecontent=content.getText().toString(); try { if (Environment.getExternalStorageState().equals (Environment.MEDIA_MOUNTED)) { File sdCardDir = Environment.getExternalStorageDirectory(); FileOutputStream fos = new FileOutputStream(sdCardDir.getCanonicalPath()+ "/"+filename+".txt"); fos.write(filecontent.getBytes("UTF-8")); fos.close();/ Toast.makeText(this, "文件保存到了"+filename+".txt"+"中", Toast.LENGTH_SHORT).show(); }else { Toast.makeText(this, "未找到文件", Toast.LENGTH_SHORT).show(); } }catch(Exception e){ e.printStackTrace(); } } 解析文件： private void analysis() {
String str="";
int lines = 0;//行数
int words = 0;//单词数
int chars = 0;//字符数
String filename=et_name.getText().toString();
FileInputStream fis=null;
BufferedReader br=null;
try {
if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) {
File file = new File(Environment.getExternalStorageDirectory().getCanonicalPath() + "/"+filename+".txt");
if (file.exists()){
fis=new FileInputStream(file);
br=new BufferedReader(new InputStreamReader(fis));
while((str=br.readLine())!=null){
char[] b=str.toCharArray();
for (int i = 0; i < str.length(); i++) {
if (b[i]' '){
spaces++;
}else if (b[i]','||b[i]=='.'){
marks++;
}
}
}
character=chars-(spaces+marks);
br.close();
read.setText("单词数："+words+",字符数："+chars+",行数："+lines+");
}
else {
Toast.makeText(this, "未找到文件", Toast.LENGTH_SHORT).show();
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
运行图片：