如何将相机捕获的图像保存在捆绑中并将其移动到第二个活动? 我在哪里做错了?
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == CAM_REQUEST) {
if (resultCode == RESULT_OK) {
Bitmap thumbnail = (Bitmap) data.getExtras().get("data");
Intent i = new Intent(this, PostActivity.class);
i.putExtra("name", thumbnail);
startActivity(i);
}
}
}
答案 0 :(得分:1)
Bitmap实现了Parcelable,所以你应该使用:
Bitmap thumbnail = (Bitmap) data.getParcelableExtra("data");
答案 1 :(得分:0)
如何将位图传递给第二个Activity
有几种方法您可以传递Bundle
表单Intent
。
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == CAM_REQUEST) {
if (resultCode == RESULT_OK) {
Bundle extras = data.getExtras()
Intent i = new Intent(this, PostActivity.class);
i.putExtra("extras", extras);
startActivity(i);
}
}
}
在PostActivity
你可以打电话
Bundle extras = getIntent().getBundleExtra("extras")
Bitmap thumbnail = (Bitmap) extras.get("data");
或者,如果您只想传递图像,则必须将Bitmap转换为字节数组
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == CAM_REQUEST) {
if (resultCode == RESULT_OK) {
Intent intent = new Intent(this, PostActivity.class);
Bitmap thumbnail = (Bitmap) data.getExtras().get("data");
ByteArrayOutputStream stream = new ByteArrayOutputStream();
thumbnail.compress(Bitmap.CompressFormat.PNG, 100, stream);
byte[] byteArray = stream.toByteArray();
intent.putExtra("image",byteArray);
startActivity(i);
}
}
}
或者您的方法也应该正确。您必须按Bitmap
方法获取getParcelableExtra(String)
。
Bitmap thumbnail = getIntent().getParcelableExtra("data");