- String res = "";
-
- try{
-
- InputStream in = getResources().openRawResource(R.raw.bbi);
-
- //在\Test\res\raw\bbi.txt,
-
- int length = in.available();
-
- byte [] buffer = new byte[length];
-
- in.read(buffer);
-
- //res = EncodingUtils.getString(buffer, "UTF-8");
-
- //res = EncodingUtils.getString(buffer, "UNICODE");
-
- res = EncodingUtils.getString(buffer, "BIG5");
-
- //依bbi.txt的编码类型选择合适的编码,如果不调整会乱码
-
- in.close();
-
- }catch(Exception e){
-
- e.printStackTrace();
-
- }
-
- myTextView.setText(res);//把得到的内容显示在TextView上
-
-
-
- 二、 从asset中获取文件并读取数据(资源文件只能读不能写)
-
- String fileName = "yan.txt"; //文件名字
-
- String res="";
-
- try{
-
- InputStream in = getResources().getAssets().open(fileName);
-
- // \Test\assets\yan.txt这里有这样的文件存在
-
- int length = in.available();
-
- byte [] buffer = new byte[length];
-
- in.read(buffer);
-
- res = EncodingUtils.getString(buffer, "UTF-8");
-
- }catch(Exception e){
-
- e.printStackTrace();
-
- }
-
-
-
- 三、 从sdcard中去读文件,首先要把文件通过\android-sdk-windows\tools\adb.exe把本地计算机上的文件copy到sdcard上去,adb.exe push e:/Y.txt /sdcard/, 不可以用adb.exe push e:\Y.txt \sdcard\ 同样: 把仿真器上的文件copy到本地计算机上用: adb pull ./data/data/com.tt/files/Test.txt e:/
-
-
-
- String fileName = "/sdcard/Y.txt";
-
- //也可以用String fileName = "mnt/sdcard/Y.txt";
-
- String res="";
-
- try{
-
- FileInputStream fin = new FileInputStream(fileName);
-
- //FileInputStream fin = openFileInput(fileName);
-
- //用这个就不行了,必须用FileInputStream
-
- int length = fin.available();
-
- byte [] buffer = new byte[length];
-
- fin.read(buffer);
-
- res = EncodingUtils.getString(buffer, "UTF-8");
-
- fin.close();
-
- }catch(Exception e){
-
- e.printStackTrace();
-
- }
-
- myTextView.setText(res);
-
-
-
- 四、 写文件, 一般写在\data\data\com.test\files\里面,打开DDMS查看file explorer是可以看到仿真器文件存放目录的结构的
-
- String fileName = "TEST.txt";
-
- String message = "FFFFFFF11111FFFFF" ;
-
- writeFileData(fileName, message);
-
-
-
- public voidwriteFileData(String fileName,String message){
-
- try{
-
- FileOutputStream fout =openFileOutput(fileName, MODE_PRIVATE);
-
- byte [] bytes = message.getBytes();
-
- fout.write(bytes);
-
- fout.close();
-
- }
-
- catch(Exception e){
-
- e.printStackTrace();
-
- }
-
- }
-
-
-
- 五、 写, 读data/data/目录(相当AP工作目录)上的文件,用openFileOutput
-
- //写文件在./data/data/com.tt/files/下面
-
- public voidwriteFileData(String fileName,String message){
-
- try{
-
- FileOutputStream fout =openFileOutput(fileName, MODE_PRIVATE);
-
- byte [] bytes = message.getBytes();
-
- fout.write(bytes);
-
- fout.close();
-
- }
-
- catch(Exception e){
-
- e.printStackTrace();
-
- }
-
- }
-
- //-------------------------------------------------------
-
- //读文件在./data/data/com.tt/files/下面
-
- public String readFileData(String fileName){
-
- String res="";
-
- try{
-
- FileInputStream fin = openFileInput(fileName);
-
- int length = fin.available();
-
- byte [] buffer = new byte[length];
-
- fin.read(buffer);
-
- res = EncodingUtils.getString(buffer, "UTF-8");
-
- fin.close();
-
- }
-
- catch(Exception e){
-
- e.printStackTrace();
-
- }
-
- return res;
-
- }
-
- 六、 写, 读sdcard目录上的文件,要用FileOutputStream, 不能用openFileOutput
-
-
-
- //写在/mnt/sdcard/目录下面的文件
-
- public voidwriteFileSdcard(String fileName,String message){
-
- try{
-
- //FileOutputStream fout = openFileOutput(fileName, MODE_PRIVATE);
-
- FileOutputStream fout = newFileOutputStream(fileName);
-
- byte [] bytes = message.getBytes();
-
- fout.write(bytes);
-
- fout.close();
-
- }
-
- catch(Exception e){
-
- e.printStackTrace();
-
- }
-
- }
-
-
-
- //读在/mnt/sdcard/目录下面的文件
-
- public String readFileSdcard(String fileName){
-
- String res="";
-
- try{
-
- FileInputStream fin = new FileInputStream(fileName);
-
- int length = fin.available();
-
- byte [] buffer = new byte[length];
-
- fin.read(buffer);
-
- res = EncodingUtils.getString(buffer, "UTF-8");
-
- fin.close();
-
- }
-
- catch(Exception e){
-
- e.printStackTrace();
-
- }
-
- return res;
-
- }
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