当一个apk调用一下的代码新建一个内部全局文件:
public void save()
{
try {
FileOutputStream outStream=this.openFileOutput("a.txt",Context.MODE_WORLD_READABLE);
outStream.write(“ggggg”.getBytes());
outStream.close();
Toast.makeText(MyActivity.this,"Saved",Toast.LENGTH_LONG).show();
} catch (FileNotFoundException e) {
return;
}
catch (IOException e){
return ;
}
}
另外一个apk可以读取这个文件,但是路径包名字带点,直接调用会exception,报“xxxxxx contains a path separator” ,因此需要用file转换下,如下的代码
public String readFileData(String fileName){
String res="";
try{
File file = new File(fileName);
// FileInputStream fin = openFileInput(file);
FileInputStream fin = new FileInputStream(file);
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;
}