Question

我差点检查并在这里尝试了所有问题。但我无法将我从画廊中挑选的图像传递给另一个活动。这是onClickListener()：

logoview=(ImageView)findViewById(R.id.logoview);
    logoview.setOnClickListener(new OnClickListener() 
    {            

    @Override
    public void onClick(View arg0) {

    openGallerylogo();
        }});

这是openGallery意图：

private void openGallerylogo() {
    // TODO Auto-generated method stub
    Intent photoPickerIntent = new Intent(Intent.ACTION_GET_CONTENT);
    photoPickerIntent.setType("image/*");
    startActivityForResult(photoPickerIntent, 1);
}

这是我的onActivityResult()：

@Override
protected void onActivityResult(int requestCode, int resultcode, Intent data){
    super.onActivityResult(requestCode, resultcode, data);

    if (requestCode == 1) 
    {
        if (data != null && resultcode == RESULT_OK) 
        {              

            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 filePath = cursor.getString(columnIndex);
            cursor.close();
            if(bmp1 != null && !bmp1.isRecycled())
            {
                bmp1 = null;                
            }

            ImageView logoview = (ImageView) findViewById(R.id.logoview);
            logoview.setImageBitmap(BitmapFactory.decodeFile(filePath));
            bmp1 = BitmapFactory.decodeFile(filePath);

            if (count.equals("logo")){
                logoview.setBackgroundResource(0);
                logoview.setImageBitmap(bmp1);              
            }
            else {

                Log.d("Status:", "Photopicker canceled");    
            }}}

此代码可以;点击ImageView，转到图库，选择图片并将其设置在ImageView中的同一MainActivity。点击按钮移动到下一个活动后，我想看到此图片是在ImageView中的另一个SecondActivity上设置的。谢谢。

Answer 1

如果您想要更改活动，请在下面写下代码。

发件人活动 Activity_one.java

Intent newdata = new Intent(Activity_one.this, Activity_Two.class);
newdata.putExtra("picture_path", filePath);
startActivity(newdata);

接收者活动 Activity_two.java

String pre_img_path= getIntent().getStringExtra("picture_path");
ImageView logoview = (ImageView) findViewById(R.id.logoview);
logoview.setImageBitmap(BitmapFactory.decodeFile(pre_img_path));

Answer 2

将图像设置为ImageView后。这样做：

Bitmap myBitmap = null;
ByteArrayOutputStream baos = new ByteArrayOutputStream();
myBitmap.compress(Bitmap.CompressFormat.PNG, 100, baos);
byte[] bytepicture = baos.toByteArray();

Intent newdata = new Intent(MainMenu.this, YourNewActivity.class);
newdata.putExtra("picture", bytepicture);
startActivity(newdata);

并在onCreate（）上的所需活动中检索为：

byte[] byteArray = extras.getByteArray("picture");
Bitmap image_bmp = BitmapFactory.decodeByteArray(byteArray, 0,
                byteArray.length);
yourimageview.setImageBitmap(image_bmp );

导入图像并传递给另一个活动

2 个答案: