我想在ImageView中显示来自Camera Intent的捕获图像。我可以让相机打开并为图像创建一个目录,但是当我通过意图传递图像并尝试调用它时,图像不会显示。这就是我在做的事情:
private static final int REQUEST_CODE = 1;
private ImageView addPicture;
private Bitmap bitmap;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(//setting the view);
addPicture.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent imageIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
File imagesFolder = new File(Environment.getExternalStorageDirectory(), "MyImages");
imagesFolder.mkdirs(); // <----
File image = new File(imagesFolder, "image_001.jpg");
Uri uriSavedImage = Uri.fromFile(image);
imageIntent.putExtra(MediaStore.EXTRA_OUTPUT, uriSavedImage);
startActivityForResult(imageIntent, 0);
}
});
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
addPicture = (ImageView) findViewById(R.id.profilepicture_registerone);
if (requestCode == REQUEST_CODE) {
if (resultCode == RESULT_OK) {
try {
InputStream stream = getContentResolver().openInputStream(data.getData());
bitmap = BitmapFactory.decodeStream(stream);
addPicture.setImageBitmap(bitmap);
stream.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
}
RoundImage image = new RoundImage(bitmap);
} else if (resultCode == RESULT_CANCELED) {
// User cancelled the image capture
} else {
Toast.makeText(getApplicationContext(), "Bad Image Request. Please Try Again!", Toast.LENGTH_LONG).show();
}
}
}
我的权限:
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.READ_PHONE_STATE"/>
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-feature android:name="android.hardware.camera" />
我的ImageView in XML:
<ImageView
android:layout_width="200dp"
android:layout_height="200dp"
android:id="@+id/profilepicture_registerone"
android:layout_centerHorizontal="true"
android:layout_marginTop="50dp"
android:clickable="true"
android:onClick="addPicture" />
编辑:由于我试图更改此帖子的内容,我的ID不正确。我将它们更改回原始ID以避免混淆。
编辑2:经过进一步测试后,我发现onActivityResult()
方法中没有设置图像。我尝试加载一个可绘制的图像,但也无法正常工作。当我在onCreate()
内部调用它时,它工作正常。
答案 0 :(得分:1)
您需要在onCreate()
中找到具有正确ID标记的ImageView ID。
addPicture = (ImageView) findViewById(R.id.profilepicture_registerone);
请检查您的位图,是否为空?
答案 1 :(得分:1)
试试这个,
在类区域中声明常量:
final int TAKE_PHOTO_REQ = 100;
调用相机意图:
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent, TAKE_PHOTO_REQ);
将onActivityResult(..)添加到您的活动
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
switch (requestCode) {
case TAKE_PHOTO_REQ: {
if (resultCode == TakePicture.RESULT_OK && data != null) {
Bitmap myBmp = (Bitmap) data.getExtras().get("data");
imageView.setImageBitmap(myBmp);
break;
}
}
}
}
*仍有问题,请检查 ImageView ,如果它是否正确。
希望这会有所帮助......谢谢
答案 2 :(得分:0)
您确定,您正在使用imageview的正确ID。在代码中,xml中的id是“picture”,但你在java中引用profilepicture_registerone?