相关疑难解决方法(0)

我正在开发一个应用程序，它将手机中的 .txt 文件作为输入并将其打印在 TextView 上，

public class MainActivity extends AppCompatActivity {
Button button;
Intent intent;private StringBuilder text = new StringBuilder();



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 = 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) {
    String Fpath = data.getDataString();
  //  final …