java无法在startActivityForResult中识别int？

Question

包com。实例触须

import 安卓.content.Intent;
import 安卓.net.Uri;
import 安卓.os.Bundle;
import 安卓.view.View;
import 安卓.widget.ImageButton;

import 安卓x.annotation.Nullable;
import 安卓x.appcompat.app.AppCompatActivity;




public class editprofile extends AppCompatActivity {
    ImageButton proileimagebutton;
    private static final int ImageRequest=1;
    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
    proileimagebutton= findViewById(R.id.edit_profile);
    proileimagebutton.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent intent = new Intent();
            intent.setAction(Intent.ACTION_GET_CONTENT);
            intent.setType("imageeeeeee/");

在startActivityForResult中没有显示错误的ImageRequest。意味着我无法在此处识别图像请求

startActivityForResult(intent.ImageRequest);

        }
    });
    }

    }

Answer 1

您需要在“公共类editprofile扩展AppCompatActivity”上方声明int。 代码应该是

private ImageButton proileimagebutton;


private static final int ImageRequest=1;

公共类editprofile扩展了AppCompatActivity{

@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
proileimagebutton= findViewById(R.id.edit_profile);
proileimagebutton.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        Intent intent = new Intent();
        intent.setAction(Intent.ACTION_GET_CONTENT);
        intent.setType("imageeeeeee/");

Answer 2

public class editprofile extends AppCompatActivity {
    ImageButton proileimagebutton;
    private static final int ImageRequest=1;
    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        //no content view? add like this setContentView(R.layout.yourViewLayout);
        proileimagebutton= findViewById(R.id.edit_profile);
        proileimagebutton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent intent = new Intent();
                intent.setAction(Intent.ACTION_GET_CONTENT);
                intent.setType("image/*");
                startActivityForResult(intent,ImageRequest);

            }
        });
    }

    @Override
    public void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        if (requestCode == ImageRequest&& resultCode == RESULT_OK) {
            // your ImageView.setUri(data.getData();      
        }
    }
}