java在使用参数时无法检索文件
在传递参数以搜索文件时,我遇到了一个问题。 基本上,当尝试读取文件时,以下代码起作用:
private void setContent(){
String text = "";
String randomText = "";
try
{
InputStream input = getAssets().open("files/jokes.txt");
int size = input.available();
byte[] buffer = new byte[size];
input.read(buffer);
input.close();
// byte buffer into a string
text = new String(buffer);
String[] splitText = text.split("###");
Random rand = new Random();
int randomIndex = rand.nextInt(splitText.length);
randomText = splitText[randomIndex];
}
catch (Exception e) {
System.out.println(e);
}
contentText.setText(randomText);
}
注意上面的输入流。我的文本文件存储在assset/files/crooks中。txt
现在,我尝试使用一个意图,将文件名按原样进行参数化,当文件名经过时,它总是在catch语句中被捕获为“”:
主要活动:
jokesButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
openContentPage("jokes");
}
});
poemsButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
openContentPage("poems");
}
});
funnyStoriesButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
openContentPage("funnyStories");
}
});
private void openContentPage(String v) {
if (v.equals("jokes")) {
Intent intentContentPage = new Intent(MainActivity.this, Content.class);
intentContentPage.putExtra("keyPage", "jokes");
startActivity(intentContentPage);
} else if (v.equals("poems")) {
Intent intentContentPage = new Intent(MainActivity.this, Content.class);
intentContentPage.putExtra("keyPage", "poems");
startActivity(intentContentPage);
} else if (v.equals("funnyStories")) {
Intent intentContentPage = new Intent(MainActivity.this, Content.class);
intentContentPage.putExtra("keyPage", "funnyStories");
startActivity(intentContentPage);
}
内容:
private void setContent(){
String text = "";
String randomText = "";
String keyPageValue = getIntent().getStringExtra("keyPage");
String fileName = "";
if(keyPageValue.equals("jokes") ){
fileName.equals("files/jokes.txt");
}
else if (keyPageValue.equals("poems")){
fileName.equals("files/poems.txt");
}
else if (keyPageValue.equals("funnyStories")){
fileName.equals("files/funnystories.txt");
}
try {
InputStream input = getAssets().open(fileName);
int size = input.available();
byte[] buffer = new byte[size];
input.read(buffer);
input.close();
// byte buffer into a string
text = new String(buffer);
String[] splitText = text.split("###");
Random rand = new Random();
int randomIndex = rand.nextInt(splitText.length);
randomText = splitText[randomIndex];
}
catch (Exception e) {
System.out.println(e);
}
contentText.setText(randomText);
}
为什么它不选择它?如前所述,所有文件都存储在资产/文件文件夹中
共 (0) 个答案