我正在尝试通过intent将图片传递给其他班级，但仅适用于captured image，而不适用于image selected from gallery。
这是相机功能开始的地方。在 ImageFitScreen.java 中，它有一个ok按钮，用于返回上一个活动。
ImageFitScreen.java
public void selectImage() {
final CharSequence[] options = { "Take Photo", "Choose from Gallery","Cancel" };
AlertDialog.Builder builder = new AlertDialog.Builder(ImageFitScreen.this);
builder.setTitle("Add Photo!");
builder.setItems(options, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int item) {
if (options[item].equals("Take Photo"))
{
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
File f = new File(android.os.Environment.getExternalStorageDirectory(), "temp.jpg");
intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(f));
//pic = f;
// Toast.makeText(getApplicationContext(), Uri.fromFile(f) +"", Toast.LENGTH_LONG).show();
startActivityForResult(intent, 1);
} else if (options[item].equals("Choose from Gallery"))
{
Intent intent = new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(intent, 2);
} else if (options[item].equals("Cancel")) {
dialog.dismiss();
finish();
}
}
});
builder.setOnKeyListener(new Dialog.OnKeyListener() {
@Override
public boolean onKey(DialogInterface dialog, int keyCode,
KeyEvent event) {
// TODO Auto-generated method stub
if (keyCode == KeyEvent.KEYCODE_BACK){
dialog.dismiss();
finish();
}
return true;
}
});
builder.show();
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == RESULT_OK) {
if (requestCode == 1) {
//h=0;
File f = new File(Environment.getExternalStorageDirectory().toString());
for (File temp : f.listFiles()) {
if (temp.getName().equals("temp.jpg")) {
f = temp;
File photo = new File(Environment.getExternalStorageDirectory(), "temp.jpg");
//pic = photo;
break;
}
}
try {
Bitmap bitmap;
BitmapFactory.Options bitmapOptions = new BitmapFactory.Options();
bitmapOptions.inJustDecodeBounds = false;
bitmapOptions.inPreferredConfig = Bitmap.Config.RGB_565;
bitmapOptions.inDither = true;
bitmapOptions.inSampleSize=8;
bitmap = BitmapFactory.decodeFile(f.getAbsolutePath(), bitmapOptions);
Global.img = bitmap;
b.setImageBitmap(bitmap);
String path = android.os.Environment.getExternalStorageDirectory() + File.separator + "Phoenix" + File.separator + "default";
//p = path;
f.delete();
OutputStream outFile = null;
File file = new File(path, String.valueOf(System.currentTimeMillis()) + ".jpg");
try {
outFile = new FileOutputStream(file);
bitmap.compress(Bitmap.CompressFormat.JPEG, 85, outFile);
//pic=file;
outFile.flush();
outFile.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
} catch (Exception e) {
e.printStackTrace();
}
} else if (requestCode == 2) {
Uri selectedImage = data.getData();
// h=1;
//imgui = selectedImage;
String[] filePath = {MediaStore.Images.Media.DATA};
Cursor c = getContentResolver().query(selectedImage, filePath, null, null, null);
c.moveToFirst();
int columnIndex = c.getColumnIndex(filePath[0]);
String picturePath = c.getString(columnIndex);
c.close();
Bitmap thumbnail = (BitmapFactory.decodeFile(picturePath));
Log.w("path of image ******", picturePath + "");
b.setImageBitmap(thumbnail);
}
}
else
{
finish();
}
ok.setOnClickListener(new View.OnClickListener()
{
public void onClick(View arg0)
{
Intent returnIntent=new Intent();
text=t.getText().toString();
b.setDrawingCacheEnabled(true);
b.measure(View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED),
View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));
b.layout(0, 0, b.getMeasuredWidth(), b.getMeasuredHeight());
b.buildDrawingCache(true);
returnIntent.putExtra("text", text);
if (b.getDrawingCache() != null) {
Bitmap bitmap = Bitmap.createBitmap(b.getDrawingCache());
if (bitmap == null) {
Log.e("TAG", "getDrawingCache() == null");
}
Global.img = bitmap;
}
setResult(Activity.RESULT_OK, returnIntent);
finish();
}
});
以前的活动
public void onActivityResult(int requestCode,int resultCode, Intent data)
{
if(requestCode==PROJECT_REQUEST_CODE) {
if(data!=null&&data.hasExtra("text")) {
c = data.getStringExtra("text");
txt1.setText(c);
viewImage.setImageBitmap(Global.img); // image can be displayed
}
}
else if (requestCode==CAMERA_REQUEST_CODE)
{
}
}
b.setOnClickListener(new View.OnClickListener() { // save button
public void onClick(View arg0) {
Intent returnIntent = new Intent();
a = "Project";
text = txt.getText().toString(); // amount
returnIntent.putExtra("text", text);
returnIntent.putExtra("a", a);
final int k1 = getIntent().getExtras().getInt("k");
returnIntent.putExtra("k1", k1);
returnIntent.putExtra("c",c);
setResult(Activity.RESULT_OK, returnIntent);
finish();
}
});
}
**图片可以返回到上一个活动**，因为它可以显示在viewImage中。在之前的活动中，它还有一个返回活动A的按钮。
活动A
c = (TextView) claims.findViewById(R.id.textView49);
c.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
if ((name != null && name.trim().length() > 0) && (result != null && result.trim().length() > 0)) {
Toast.makeText(getActivity().getApplicationContext(), "not null", Toast.LENGTH_LONG).show();
Intent intent = new Intent(getActivity(), EditClaims.class);
intent.putExtra("name", name);
intent.putExtra("result", result);
intent.putExtra("description", description);
byte[]data=getBitmapAsByte(getActivity(), Global.img);
intent.putExtra("data",data);
startActivity(intent);
}
else {
Toast.makeText(getActivity().getApplicationContext(), "null", Toast.LENGTH_LONG).show();
}
}
} );
public static byte[]getBitmapAsByte(final Context context,Bitmap bitmap) {
ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.PNG, 50, outputStream);
return outputStream.toByteArray();
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
int button = data.getIntExtra("k1", 0);
if (button == 1) {
switch (requestCode) {
case 0:
result = data.getStringExtra("text");
name = data.getStringExtra("a");
description=data.getStringExtra("c");
if (Global.img != null) {
v.setImageBitmap(Global.img);
}
as=Long.parseLong(result);
c.setText(" " + name + "------" + "RM " + result);
break;
}
}
else if(requestCode==CAMERA_REQUEST_CODE)
{
}
活动B （活动）
if(getIntent().hasExtra("data")) {
// ImageView previewThumbnail = new ImageView(this);
Bitmap b = BitmapFactory.decodeByteArray(
getIntent().getByteArrayExtra("data"),0,getIntent().getByteArrayExtra("data").length);
viewImage.setImageBitmap(b);
}
Global.java
public class Global {
static Bitmap img;
}
当它intent到活动B时，我的应用会自动退出。但如果图像为captured image，它将起作用。是因为尺寸太大了吗？我对此没有任何想法。可以有人帮助我吗？非常感谢！
答案 0 :(得分：1)
你不应该将位图放入Bundle。最好的方法是在存储上保存图像并在活动之间传递路径uri。
答案 1 :(得分：-1)
byte [] recieve = getIntent().getByteArrayExtra("key",defaultValue);