Android和
在像This这样的应用程序上工作
最后出现了问题java.io.FileNotFoundException: /document/86: open failed: ENOENT (No such file or directory)
现在我正在研究解决方案
“该如何使用 ContentResolver和openInputStream()”
有人帮我怎么做吗
最佳答案
如果您尝试制作一个从手机读取文件的应用
试试This
试试这个可能有帮助
private InputStream getResources(String s) {
return null;
}
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
button = (Button) findViewById(R.id.btn);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("text/plain");
startActivityForResult(intent, 7);
Log.v("###", "parent " + getParent());
}
});
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
Uri PathHolder = data.getData();
Log.v("###", "yo " + PathHolder);
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode) {
case 7:
if (resultCode == RESULT_OK) {
setContentView(R.layout.activity_main);
try {
InputStream inputStream = getContentResolver().openInputStream(PathHolder);
BufferedReader r = new BufferedReader(new InputStreamReader(inputStream));
String mLine;
while ((mLine = r.readLine()) != null) {
text.append(mLine);
text.append('\n');
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
关于java - 使用ContentResolver和openInputStream()(Android),我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/52743934/