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我正在使用以下代码允许用户捕获图像然后在 android 中裁剪它，我在互联网上找到了代码

public class ShootAndCropActivity extends Activity implements OnClickListener {

//keep track of camera capture intent
final int CAMERA_CAPTURE = 1;
//keep track of cropping intent
final int PIC_CROP = 2;
//captured picture uri
private Uri picUri;

/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);

    //retrieve a reference to the UI button
    Button captureBtn = (Button)findViewById(R.id.capture_btn);
    //handle button clicks
    captureBtn.setOnClickListener(this);
}

/**
 * Click method to handle user pressing button to launch camera
 */
public void onClick(View v) {
    if (v.getId() == R.id.capture_btn) {     
        try {
            //use standard intent to capture an image
            Intent captureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
            //we will handle the returned data in onActivityResult
            startActivityForResult(captureIntent, CAMERA_CAPTURE);
        }
        catch(ActivityNotFoundException anfe){
            //display an error message
            String errorMessage = "Whoops - your device doesn't support capturing images!";
            Toast toast = Toast.makeText(this, errorMessage, Toast.LENGTH_SHORT);
            toast.show();
        }
    }
}

/**
 * Handle user returning from both capturing and cropping the image
 */
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (resultCode == RESULT_OK) {
        //user is returning from capturing an image using the camera
        if(requestCode == CAMERA_CAPTURE){
            //get the Uri for the captured image
            picUri = data.getData();
            //carry out the crop operation
            performCrop();
        }
        //user is returning from cropping the image
        else if(requestCode == PIC_CROP){
            //get the returned data
            Bundle extras = data.getExtras();
            //get the cropped bitmap
            Bitmap thePic = extras.getParcelable("data");
            //retrieve a reference to the ImageView
            ImageView picView = (ImageView)findViewById(R.id.picture);
            //display the returned cropped image
            picView.setImageBitmap(thePic);
        }
    }
}

/**
 * Helper method to carry out crop operation
 */
private void performCrop(){
    //take care of exceptions
    try {
        //call the standard crop action intent (the user device may not support it)
        Intent cropIntent = new Intent("com.android.camera.action.CROP"); 
        //indicate image type and Uri
        cropIntent.setDataAndType(picUri, "image/*");
        //set crop properties
        cropIntent.putExtra("crop", "true");
        //indicate aspect of desired crop
        cropIntent.putExtra("aspectX", 1);
        cropIntent.putExtra("aspectY", 1);
        //indicate output X and Y
        cropIntent.putExtra("outputX", 256);
        cropIntent.putExtra("outputY", 256);
        //retrieve data on return
        cropIntent.putExtra("return-data", true);
        //start the activity - we handle returning in onActivityResult
        startActivityForResult(cropIntent, PIC_CROP);  
    }
    //respond to users whose devices do not support the crop action
    catch(ActivityNotFoundException anfe){
        //display an error message
        String errorMessage = "Whoops - your device doesn't support the crop action!";
        Toast toast = Toast.makeText(this, errorMessage, Toast.LENGTH_SHORT);
        toast.show();
    }
}
}

它工作得很好，但是当它调用裁剪意图时它显示两个选项并允许用户在它们之间进行选择的问题

我想要做的是默认选择第一个选项，并且不向用户显示此选择器以强制他裁剪图像，或者至少不允许用户通过按回强制他裁剪图像来关闭此对话框.

有人可以帮忙吗？

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0 回答 0