Question

我正在尝试从厨房中选择一个图像然后处理它，我是通过按下主活动上的一个按钮来完成的，然后开始一个新的活动，您可以在其中选择内置图像或选择你自己的，当我想选择我自己的图像时，它应该打开画廊，让我选择一个图像，为什么这不起作用（虽然它之前工作，我想我只是打破了一些东西，但不要知道什么）

我的代码：

package il.popov.ecptest;

import android.app.ListActivity;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;

public class select_activity extends ListActivity {

ListView listView;
Intent intent;


@
Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);


    String[] StringArray = {
        "Select your own", "image1", "image2", "image3", "image4", "None"
    };
    setListAdapter(new ArrayAdapter < String > (this, R.layout.support_simple_spinner_dropdown_item, StringArray));
    intent = new Intent(this.getApplicationContext(), main_activity.class);
    listView = getListView();
    listView.setTextFilterEnabled(true);
    listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {@
        Override
        public void onItemClick(AdapterView <? > arg0, View arg1, int position, long arg3) {
            processClick(position);
        }
    });
}



public void processClick(int position) {
    switch (position) {
        case 0:
            //Intent i = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.INTERNAL_CONTENT_URI);
            //startActivity(i);

            Intent photoPickerIntent = new Intent(Intent.ACTION_PICK);
            photoPickerIntent.setType("image/*");
            startActivityForResult(photoPickerIntent, 237);

            //Returns to main activity , DO NOT CHANGE
            startActivity(intent);
            break;
        case 1:
            midClass.img = BitmapFactory.decodeResource(getResources(), R.drawable.image1);
            midClass.isImageSelected = true;
            startActivity(intent);
            break;
        case 2:
            midClass.img = BitmapFactory.decodeResource(getResources(), R.drawable.image2);
            midClass.isImageSelected = true;
            startActivity(intent);
            break;
        case 3:
            midClass.img = BitmapFactory.decodeResource(getResources(), R.drawable.image3);
            midClass.isImageSelected = true;
            startActivity(intent);
            break;
        case 4:
            midClass.img = BitmapFactory.decodeResource(getResources(), R.drawable.image4);
            midClass.isImageSelected = true;
            startActivity(intent);
            break;
        case 5:
            midClass.img = null;
            midClass.isImageSelected = false;
            startActivity(intent);
            break;
        default:
            midClass.toastificate("Error in selection process");
            midClass.isImageSelected = false;
            midClass.img = null;
            break;

    }
}



@
Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    midClass.toastificate("checking result");
    if (requestCode == 237 && resultCode == RESULT_OK && null != data) {
        midClass.toastificate("Processing image");
        Uri selectedImage = data.getData();
        String[] filePathColumn = {
            MediaStore.Images.Media.DATA
        };

        Cursor cursor = getContentResolver().query(selectedImage,
            filePathColumn, null, null, null);
        cursor.moveToFirst();

        int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
        String picturePath = cursor.getString(columnIndex);
        cursor.close();

        BitmapFactory.Options opt = new BitmapFactory.Options();
        opt.inMutable = true;
        midClass.img = BitmapFactory.decodeFile(picturePath, opt);
        if (midClass.img != null) {
            midClass.isImageSelected = true;
        } else {
            midClass.isImageSelected = false;
        }

    }
}
}

我使用了以下权限：

<uses-permission android:name="android.permission.MANAGE_DOCUMENTS" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.BLUETOOTH" />

Answer 1

case 0:
        //Intent i = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.INTERNAL_CONTENT_URI);
        //startActivity(i);

        Intent photoPickerIntent = new Intent(Intent.ACTION_PICK);
        photoPickerIntent.setType("image/*");
        startActivityForResult(photoPickerIntent, 237);

        //Returns to main activity , DO NOT CHANGE
        startActivity(intent);// Remove this line  in your case 0

意图没有开始

1 个答案: