Question

我是Android编程的新手，我正在用Java编写一个应用程序，打开相机拍照并保存。我是通过 Intents 制作的，但我看不到onActivityResult正在运行。

我已将其测试到我的手机（三星Galaxy S）中，当我拍摄照片时，我会收到该照片的预览，其中有两个按钮，一个保存，另一个取消。我没有在我的代码中添加一些东西来做这个，所以我认为它是相机所做的事情。我希望在捕获图像后运行onActivityResult（在我按下预览上的“保存”按钮后）。

但是，在按预览上的按钮保存后，我将如何返回结果以启动onActivityResult？

我忘了告诉我按完保存后我的整个应用终止了。这是我的代码

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

    TakePicButton = (Button) findViewById(R.id.TakePicture);
    TakePicButton.setOnClickListener((android.view.View.OnClickListener) this);

}

@Override
public void onDestroy(){
    super.onDestroy();
}

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE) {
        if (resultCode == RESULT_OK) {
            // Image captured and saved to fileUri specified in the Intent
            Toast.makeText(this, "Image saved to:\n" + data.getData(), Toast.LENGTH_LONG).show();

        } else if (resultCode == RESULT_CANCELED) {
            Toast.makeText(this, "Picture was not taken", Toast.LENGTH_SHORT);

        } else {
            Toast.makeText(this, "Picture was not taken", Toast.LENGTH_SHORT);

        }
    }

 public void onClick(View v) {
// TODO Auto-generated method stub
if(v.getId() == R.id.TakePicture){

    // create Intent to take a picture and return control to the calling application
    Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

    fileUri = getOutputMediaFileUri(MEDIA_TYPE_IMAGE); // create a file to save the image
    intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri); // set the image file name

    // start the image capture Intent
    startActivityForResult(intent, CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE);
}
}

Answer 1

尝试以下代码，你必须稍微修改它，它将帮助你从图书馆和从相机，SELECT_PICTURE用于从图书馆获取图像

public void onActivityResult(int requestCode, int resultCode, Intent data) { switch (requestCode) { case SELECT_PICTURE: Uri selectedImageUri = data.getData(); filemanagerstring = selectedImageUri.getPath(); selectedImagePath = getPath(selectedImageUri); if (selectedImagePath != null) myFile = new File(selectedImagePath); else if (filemanagerstring != null) myFile = new File(filemanagerstring); if (myFile != null) { Bitmap bmp_fromGallery = decodeImageFile(selectedImagePath); break; case CAMERA_REQUEST: Bitmap bmp_Camera = (Bitmap) data.getExtras().get("data"); break; default: break; } }

构建相机应用程序 - 接收

1 个答案: