我在Android中有一个图像视图，在该图像视图上我有另一个图像视图..两个图像视图包含两个不同的图像..现在我想将它保存为我的手机库中的单个JPG图像..那么如何我可以那样做吗？ 我尝试了一些代码，但它没有用。
这是我的代码。
XML文件：
<ImageView
android:id="@+id/innerImage"
android:layout_width="300dp"
android:layout_height="230dp"
android:layout_centerInParent="true"
android:layout_centerVertical="true"
android:contentDescription="@android:string/untitled"
android:background="@drawable/white"/>
<Button
android:id="@+id/btnselectPhoto"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBottom="@+id/ivImage"
android:layout_alignLeft="@+id/ivImage"
android:layout_marginBottom="16dp"
android:text="@string/select_photo" />
<ImageView
android:id="@+id/ivImage"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentLeft="true"
android:layout_centerVertical="true"
android:contentDescription="@android:string/untitled" />
<Button
android:id="@+id/btnsave"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="@id/btnselectPhoto"
android:layout_alignBottom="@id/btnselectPhoto"
android:layout_alignRight="@+id/ivImage"
android:layout_marginLeft="32dp"
android:layout_toRightOf="@id/btnselectPhoto"
android:text="@string/save" />
这是我的Java代码：
public class MainActivity extends ActionBarActivity {
private static String mTempDir;
Bitmap mBackImage, mTopImage, mBackground, mNewSaving;
Canvas mComboImage;
FileOutputStream mFileOutputStream;
BitmapDrawable mBitmapDrawable;
private String mCurrent = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// Call method for selecting Image
SelectImage();
}
// method for selecting image
private void SelectImage() {
// items to put in alert box
final CharSequence[] items = { "Take Photo", "Choose from Library", "Cancel" };
// Alert box
final AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
builder.setTitle("Add Photo");
// Click Event of button
Button btn = (Button) findViewById(R.id.btnselectPhoto);
btn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// Set items in alert box
builder.setItems(items, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int item) {
// Start Camara
if (items[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));
startActivityForResult(intent, 1);
}
// Open Gallery
else if (items[item].equals("Choose from Library")) {
Intent intent = new Itent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
intent.setType("image/*");
startActivityForResult(intent, 2);
}
// Cancel code
else if (items[item].equals("Cancel")) {
dialog.dismiss();
}
}
});
builder.show();
}
});
}
// This method is called for setting image in imageview.
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
final String picturePath;
ImageView iv = (ImageView) findViewById(R.id.innerImage);
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == RESULT_OK) {
if (requestCode == 1) {
File f = new File(Environment.getExternalStorageDirectory().toString());
for (File temp : f.listFiles()) {
if (temp.getName().equals("temp.jpg")) {
f = temp;
break;
}
}
try {
Bitmap bm;
BitmapFactory.Options btmapOptions = new BitmapFactory.Options();
bm = BitmapFactory.decodeFile(f.getAbsolutePath(), btmapOptions);
// bm = Bitmap.createScaledBitmap(bm, 70, 70, true);
iv.setImageBitmap(bm);
String path = android.os.Environment.getExternalStorageDirectory() + File.separator + "Phoenix" + File.separator + "default";
f.delete();
OutputStream fOut = null;
File file = new File(path, String.valueOf(System.currentTimeMillis()) + ".jpg");
try {
fOut = new FileOutputStream(file);
bm.compress(Bitmap.CompressFormat.JPEG, 85, fOut);
fOut.flush();
fOut.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();
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();
// Bitmap thumbnail = (BitmapFactory.decodeFile(picturePath));
iv.setImageBitmap(BitmapFactory.decodeFile(picturePath));
saveimage(picturePath);
}
}
}
private void saveimage(String imgPath) {
mTempDir = Environment.getExternalStorageDirectory() + "/" + "Demo" + "/";
File mTempFile = new File(mTempDir);
if (!mTempFile.exists()) {
mTempFile.mkdirs();
}
mCurrent = "temp.png";
mBackground = Bitmap.createBitmap(604, 1024, Bitmap.Config.ARGB_8888);
mBackImage = BitmapFactory.decodeResource(getResources(), R.drawable.image1);
mTopImage = BitmapFactory.decodeFile(imgPath);
mComboImage = new Canvas(mBackground);
mComboImage.drawBitmap(mBackImage, 0f, 0f, null);
mComboImage.drawBitmap(mTopImage, 0f, 0f, null);
Button savebtn = (Button) findViewById(R.id.btnsave);
savebtn.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
try {
mBitmapDrawable = new BitmapDrawable(getResources(), mBackground);
mNewSaving = ((BitmapDrawable) mBitmapDrawable).getBitmap();
String FtoSave = mTempDir + mCurrent;
File mFile = new File(FtoSave);
mFileOutputStream = new FileOutputStream(mFile);
mNewSaving.compress(CompressFormat.PNG, 95, mFileOutputStream);
mFileOutputStream.flush();
mFileOutputStream.close();
}
catch (FileNotFoundException e) {
e.printStackTrace();
}
catch (IOException e) {
e.printStackTrace();
}
}
});
}
}
答案 0 :(得分：1)
我曾经在类似的问题上做过一次，我通过将两个图像放在相同的线性布局中来解决它，从而创建了该布局的Bitmap。你可以编写一个函数来保存那个你想要的Bitmap。
以下是一些示例代码：
private Bitmap getBitmap(View v) {
v.clearFocus();
v.setPressed(false);
boolean willNotCache = v.willNotCacheDrawing();
v.setWillNotCacheDrawing(false);
// Reset the drawing cache background color to fully transparent
// for the duration of this operation
int color = v.getDrawingCacheBackgroundColor();
v.setDrawingCacheBackgroundColor(0);
if (color != 0) {
v.destroyDrawingCache();
}
v.buildDrawingCache();
Bitmap cacheBitmap = v.getDrawingCache();
if (cacheBitmap == null) {
Toast.makeText(StopWarApp.getContext(), "Something went wrong",
Toast.LENGTH_SHORT).show();
return null;
}
Bitmap bitmap = Bitmap.createBitmap(cacheBitmap);
// Restore the view
v.destroyDrawingCache();
v.setWillNotCacheDrawing(willNotCache);
v.setDrawingCacheBackgroundColor(color);
return bitmap;
}
答案 1 :(得分：0)
public void combineImages(Bitmap c, Bitmap s,String loc) {
Bitmap cs = null;
int width, height = 0;
if(c.getWidth() > s.getWidth()) {
width = c.getWidth();
height = c.getHeight() + s.getHeight();
} else {
width = s.getWidth();
height = c.getHeight() + s.getHeight();
}
cs = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
Canvas comboImage = new Canvas(cs);
comboImage.drawBitmap(c, 0f, 0f, null);
comboImage.drawBitmap(s, 0f, c.getHeight(), null);
String tmpImg = String.valueOf(System.currentTimeMillis()) + ".png";
OutputStream os = null;
try {
os = new FileOutputStream(loc + tmpImg);
cs.compress(CompressFormat.PNG, 100, os);
} catch(IOException e) {
Log.e("combineImages", "problem combining images", e);
}
}
您可以使用此组合两个位图。
答案 2 :(得分：0)
LinearLayout ll;
@Override
protected void onCreate(Bundle savedInstanceState) {
// TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.layout2);
ll=(LinearLayout)findViewById(R.id.linearlayout);
//Add button in your layout and write the below code onclick of button.
button.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View arg0) {
ll.setDrawingCacheEnabled(true);
Bitmap bitmap = ll.getDrawingCache();
String root = Environment.getExternalStorageDirectory().toString();
File newDir = new File(root + "/saved_picture");
newDir.mkdirs();
Random gen = new Random();
int n = 10000;
n = gen.nextInt(n);
String fotoname = n + ".jpg";
File file = new File(newDir, fotoname);
String s = file.getAbsolutePath();
System.err.print("Path of saved image." + s);
try {
FileOutputStream out = new FileOutputStream(file);
bitmap.compress(Bitmap.CompressFormat.JPEG, 90, out);
out.flush();
out.close();
} catch (Exception e) {
}
}
});