4

我想通过单击 FirstActivity 中的 Capture 按钮在捕获后显示图像，并使用 SecondActivity 在 activity_second(layout) 中显示图像。

第一活动

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_first);

    Button take_photo = (Button) findViewById(R.id.btn_capture);
    take_photo.setOnClickListener(new OnClickListener() {

            public void onClick(View v) {
                Intent i = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
                startActivity(i);
            }
        });
}

布局活动_first

> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <Button
        android:id="@+id/btn_capture"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:layout_marginLeft="21dp"
        android:text="Capture" />

</RelativeLayout>

第二活动

> public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_second);

        ImageView view = (ImageView) findViewById(R.id.view_photo);
    }

活动_秒

> <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <ImageView
        android:id="@+id/view_photo"
        android:layout_width="260dp"
        android:layout_height="374dp" />

</LinearLayout>
4

4 回答 4

5

使用 startActivityForResult() 而不是 startActivity()

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    // TODO Auto-generated method stub
    super.onActivityResult(requestCode, resultCode, data);
    Bitmap thumbnail = null;
    if (requestCode == CAMERA_PIC_REQUEST) {
        if (resultCode == RESULT_OK) {
            thumbnail = (Bitmap) data.getExtras().get("data");
            Intent i = new Intent(this, NextActivity.class);
            i.putExtra("name", thumbnail);
            startActivity(i);
        }
    }
}

接下来在下一个活动中尝试使用这个

protected void onCreate(Bundle savedInstanceState) {
    //TODO Auto-generated method stub
    super.onCreate(savedInstanceState);
    //intialize the image view 

    Bitmap bitmap  = getIntent().getExtras().getParcelable("name");
    //set the image here.
}

希望这可以帮助你

于 2012-08-13T04:12:58.183 回答
2

您可以使用以下代码来解决问题：

您的第一个活动：

private static final int CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE = 100;

    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_first);
        Button take_photo = (Button) findViewById(R.id.btn_capture);
        take_photo.setOnClickListener(new OnClickListener() 
        {
            public void onClick(View v) 
            {
                // create Intent to take a picture and return control to the calling application
                Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
                // start the image capture Intent
                startActivityForResult(intent, CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE);
            }
        });
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) 
    {
        if (requestCode == CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE) 
        {
            Bitmap imageData = null;
            if (resultCode == RESULT_OK) 
            {
                imageData = (Bitmap) data.getExtras().get("data");

                Intent i = new Intent(this, SecondActivity.class);
                i.putExtra("name", imageData );
                startActivity(i);

            } 
            else if (resultCode == RESULT_CANCELED) 
            {
                // User cancelled the image capture
            } 
            else 
            {
                // Image capture failed, advise user
            }
        }
    }

第二个活动：

public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_second);
        Bitmap bitmap  = getIntent().getExtras().getParcelable("name");
        ImageView view = (ImageView) findViewById(R.id.view_photo);
        view.setImageBitmap(bitmap); 
    }

并在 Manifest.xml 文件中使用权限：

<uses-feature android:name="android.hardware.camera" />

我希望这会正常工作

于 2012-08-14T00:09:38.953 回答
1 
public void onClick(View v) 
    {
    Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);                    
    mImageCaptureUri = Uri.fromFile(new File(Environment.getExternalStorageDirectory(),
                                       "image" + String.valueOf(System.currentTimeMillis()) + ".jpg"));
    try 
        {                       
            startActivityForResult(intent, PICK_FROM_CAMERA);
        } 
    catch (ActivityNotFoundException e) 
        {
            e.printStackTrace();
        }
    }

protected void onActivityResult(int requestCode, int resultCode, Intent data) 
    {
        if (resultCode != RESULT_OK) return;       
        switch (requestCode) 
            {
                case PICK_FROM_CAMERA:
                    Bitmap photo =  null;           
                    Bundle extras = data.getExtras();
                    if (extras != null) 
                    {               
                        photo = extras.getParcelable("data");
                    }   
                    Intent i =  new Intent(this,SecondActivity.class);
                    i.putExtra("image", photo);
                    startActivity(i);
                    break;  
    }

在第二个活动中：

    bMap =  getIntent().getParcelableExtra("image");
    mImageView.setImageBitmap(bMap);
于 2012-08-13T04:02:09.797 回答
0

获取您存储的图像的路径，并将其作为额外的使用意图传递给 onActivityResult() 中的其他活动。希望这可以帮助你。

于 2012-08-13T03:43:32.033 回答