在我的应用中，我想在图库的ImageView上设置图像，我想设置相机拍摄的图像。我尝试过这段代码，当我从图库中加载图片时，它正在运行。但是，当我尝试在ImageView上设置图片时，该活动已加载，但图片未显示在ImageView中。对此有何解决方案？这是我的代码：
第一项活动
public class MainActivity extends ActionBarActivity {
private static int RESULT_LOAD_IMAGE = 1;
private static final int CAMERA_REQUEST = 1888;
private ImageView imageView;
Bitmap photo;
String picturePath;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button buttonLoadImage = (Button) findViewById(R.id.buttonLoadPicture);
buttonLoadImage.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
Intent i = new Intent(
Intent.ACTION_PICK,
android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(i, RESULT_LOAD_IMAGE);
}
});
// this.imageView = (ImageView)this.findViewById(R.id.imgView);
Button photoButton = (Button) this.findViewById(R.id.button2);
photoButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(cameraIntent, CAMERA_REQUEST);
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK && null != data) {
Uri selectedImage = data.getData();
String[] filePathColumn = {MediaStore.Images.Media.DATA};
Cursor cursor = getContentResolver().query(selectedImage,
filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
picturePath = cursor.getString(columnIndex);
cursor.close();
int flagval = 1;
/* ImageView imageView = (ImageView) findViewById(R.id.imgView);
imageView.setImageBitmap(BitmapFactory.decodeFile(picturePath));*/
sendImage(flagval);
}
if (requestCode == CAMERA_REQUEST && resultCode == RESULT_OK) {
/* photo = (Bitmap) data.getExtras().get("data");
//imageView.setImageBitmap(photo);
int flagvalt=2;
try {
sendImage(flagvalt);
}
catch (Exception e){
Toast.makeText(MainActivity.this, "Method error", Toast.LENGTH_SHORT).show();
}*/
try {
loadCamPic();
Toast.makeText(MainActivity.this, "Method invoked", Toast.LENGTH_SHORT).show();
} catch (Exception e) {
Toast.makeText(MainActivity.this, "Method error", Toast.LENGTH_SHORT).show();
}
}
}
public void sendImage(int flag) {
if (flag == 1) {
Toast.makeText(MainActivity.this, "Loc:" + picturePath, Toast.LENGTH_SHORT).show();
Intent myIntent1 = new Intent(MainActivity.this, ImageUploadActivity.class);
myIntent1.putExtra("key", picturePath);
MainActivity.this.startActivity(myIntent1);
}
/*else if(flag==2) {
Intent intent = new Intent(MainActivity.this, ImageUploadActivity.class);
intent.putExtra("BitmapImage", photo);
}*/
}
void loadCamPic() {
String baseDir = Environment.getExternalStorageDirectory().getAbsolutePath();
String pathName = baseDir + "/DCIM/CAMERA";
File parentDir = new File(pathName);
File[] files = parentDir.listFiles();
Date lastDate = null;
String lastFileName;
boolean isFirstFile = true;
for (File file : files) {
if (isFirstFile) {
lastDate = new Date(file.lastModified());
isFirstFile = false;
}
if (file.getName().endsWith(".jpg") || file.getName().endsWith(".jpeg")) {
Date lastModDate = new Date(file.lastModified());
if (lastModDate.after(lastDate)) {
lastDate = lastModDate;
lastFileName = file.getName();
String pathName2 = pathName + lastFileName;
// Log.e(TAG, "Method invoked");
Intent intent = new Intent(MainActivity.this, ImageUploadActivity.class);
Bundle extras = new Bundle();
extras.putString("FILE_PATH", pathName2);
extras.putString("FILE_NAME", lastFileName);
intent.putExtras(extras);
MainActivity.this.startActivity(intent);
}
}
}
}
}
第二项活动
public class ImageUploadActivity extends ActionBarActivity {
private Button upload;
private Bitmap bitmap;
private ProgressDialog dialog;
String picturePath;
String filename;
ImageView imageView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_image_upload);
//Image from sdcard
Intent intent1 = getIntent();
picturePath = intent1.getExtras().getString("key");
imageView = (ImageView) findViewById(R.id.imgView);
imageView.setImageBitmap(BitmapFactory.decodeFile(picturePath));
bitmap = (BitmapFactory.decodeFile(picturePath));
//Camera Image
/* Intent intent = getIntent();
bitmap = (Bitmap) intent.getParcelableExtra("BitmapImage");
imageView = (ImageView) findViewById(R.id.imgView);
imageView.setImageBitmap(bitmap);*/
if (picturePath == null) {
Intent intent = getIntent();
Bundle extras = intent.getExtras();
filename = extras.getString("FILE_NAME");
String filepath = extras.getString("FILE_PATH");
Toast.makeText(ImageUploadActivity.this, "Success:" + filepath, Toast.LENGTH_SHORT).show();
imageView = (ImageView) findViewById(R.id.imgView);
imageView.setImageBitmap(BitmapFactory.decodeFile(filepath));
bitmap = (BitmapFactory.decodeFile(filepath));
}
upload = (Button) findViewById(R.id.upload);
upload.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
if (bitmap == null) {
Toast.makeText(getApplicationContext(),
"Please select image", Toast.LENGTH_SHORT).show();
} else {
dialog = ProgressDialog.show(ImageUploadActivity.this, "Uploading",
"Please wait...", true);
new ImageUploadTask().execute();
}
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_image_upload, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
class ImageUploadTask extends AsyncTask<Void, Void, String> {
@Override
protected String doInBackground(Void... unsued) {
try {
HttpClient httpClient = new DefaultHttpClient();
HttpContext localContext = new BasicHttpContext();
HttpPost httpPost = new HttpPost("http://10.10.10.15/test/upload.php");
MultipartEntity entity = new MultipartEntity(
HttpMultipartMode.BROWSER_COMPATIBLE);
ByteArrayOutputStream bos = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, bos);
byte[] data = bos.toByteArray();
/* entity.addPart("uploaded_file", new ByteArrayBody(data,
"myImage.jpg"));*/
// String newFilename= filename.concat("file");
// newFilename=filename+newFilename;
entity.addPart("uploaded_file", new ByteArrayBody(data,
filename));
// Log.e(TAG, "Method invoked");
httpPost.setEntity(entity);
HttpResponse response = httpClient.execute(httpPost,
localContext);
BufferedReader reader = new BufferedReader(
new InputStreamReader(
response.getEntity().getContent(), "UTF-8"));
StringBuilder builder = new StringBuilder();
String aux = "";
while ((aux = reader.readLine()) != null) {
builder.append(aux);
}
String sResponse = builder.toString();
return sResponse;
} catch (Exception e) {
if (dialog.isShowing())
dialog.dismiss();
Toast.makeText(getApplicationContext(), "Exception Message 1", Toast.LENGTH_LONG).show();
Log.e(e.getClass().getName(), e.getMessage(), e);
return null;
}
// (null);
}
@Override
protected void onProgressUpdate(Void... unsued) {
}
@Override
protected void onPostExecute(String sResponse) {
try {
if (dialog.isShowing())
dialog.dismiss();
if (sResponse != null) {
Toast.makeText(getApplicationContext(),
"Photo uploaded successfully",
Toast.LENGTH_SHORT).show();
Log.e("Response", sResponse);
}
} catch (Exception e) {
Toast.makeText(getApplicationContext(),
"Exception Message",
Toast.LENGTH_LONG).show();
Log.e(e.getClass().getName(), e.getMessage(), e);
}
}
}
}
答案 0 :(得分：0)
在Take photo w/ camera intent and display in imageView or textView?查看所选的最佳答案，您可以了解如何拍摄照片并以编程方式将其设置为imageView的背景