Android 基于int值/文件名加载文件
我试图从assets文件夹加载一个文件,我希望文件名基于int I的当前值(即如果I=2,则打开2.txt和2.jpg)。我有以下代码处理资产管理器方面的事情,并且正在工作:Android 基于int值/文件名加载文件,android,asset-management,Android,Asset Management,我试图从assets文件夹加载一个文件,我希望文件名基于int I的当前值(即如果I=2,则打开2.txt和2.jpg)。我有以下代码处理资产管理器方面的事情,并且正在工作: //link the image and text boxes to the xml Image = (ImageView)findViewById(R.id.image); Text = (TextView)findViewById(R.id.text); loadDataFromAss
//link the image and text boxes to the xml
Image = (ImageView)findViewById(R.id.image);
Text = (TextView)findViewById(R.id.text);
loadDataFromAsset();
}
//actually load the text file and image file
public void loadDataFromAsset() {
//load the asset files themselves
try {
InputStream is = getAssets().open("1.txt");
//check file size
int size = is.available();
//create a buffer to handle it
byte[] buffer = new byte[size];
//send the data to the buffer
is.read(buffer);
//close the stream down
is.close();
//set the text we recovered to the TextView
Text.setText(new String(buffer));
}
catch (IOException ex) {
return;
}
//image file next
try {
InputStream ims = getAssets().open("1.jpg");
//load the image as drawable
Drawable d = Drawable.createFromStream(ims, null);
//set the drawable image to the imageview
Image.setImageDrawable(d);
}
catch (IOException ex) {
return;
}
}
我是java新手,不知道如何从这里开始前进,如何根据int值使1.jpg和1.txt真正工作
谢谢,
安迪像这样试试
InputStream is=getAssets().open(i+“.txt”) 尝试将此用于文本
InputStream is = getResources().getAssets().open("yourINTvalue.txt");
String textfile = convertStreamToString(is);
Text.setText(textfile);
public static String convertStreamToString(InputStream is)
throws IOException {
Writer writer = new StringWriter();
char[] buffer = new char[2048];
try {
Reader reader = new BufferedReader(new InputStreamReader(is,
"UTF-8"));
int n;
while ((n = reader.read(buffer)) != -1) {
writer.write(buffer, 0, n);
}
} finally {
is.close();
}
String text = writer.toString();
return text;
}
要获得图像,请尝试此
InputStream bitmap=null;
try {
bitmap=getAssets().open("yourINTvalue.png");
Bitmap bit=BitmapFactory.decodeStream(bitmap);
img.setImageBitmap(bit);
} catch (IOException e) {
e.printStackTrace();
} finally {
bitmap.close();
}
试试这个:
//actually load the text file and image file
public void loadDataFromAsset(int val) {
//load the asset files themselves
try {
InputStream is = getAssets().open(val + ".txt");
//check file size
int size = is.available();
//create a buffer to handle it
byte[] buffer = new byte[size];
//send the data to the buffer
is.read(buffer);
//close the stream down
is.close();
//set the text we recovered to the TextView
Text.setText(new String(buffer));
}
catch (IOException ex) {
return;
}
//image file next
try {
InputStream ims = getAssets().open(val + ".jpg");
//load the image as drawable
Drawable d = Drawable.createFromStream(ims, null);
//set the drawable image to the imageview
Image.setImageDrawable(d);
}
catch (IOException ex) {
return;
}
}
非常好,谢谢。我只需要加上private int val=1;在顶部初始化,然后将loadDataFromAsset()更改为loadDataFromAsset(val);在oncreate下。谢谢