我的主视图包含与其关联的图像和复选框以及发送电子邮件按钮。当我单击复选框并选择发送电子邮件按钮时，我应该被重定向到必须附加所选图像的电子邮件页面。这是我的代码。 请帮帮我
public class GridcheckboxActivity extends Activity {
GridView mygrid;
String[] imagepaths;
Uri[] myUris;
boolean[] ticking;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mygrid=(GridView)findViewById(R.id.gridView1);
String folderpath=Environment.getExternalStorageDirectory().getAbsolutePath()+"/New Folder/";
File myfile=new File(folderpath);
File[] imageslist=myfile.listFiles(new FilenameFilter() {
@Override
public boolean accept(File dir, String filename) {
// TODO Auto-generated method stub
return (filename.toLowerCase().endsWith("jpg")||filename.toLowerCase().endsWith("png")||filename.toLowerCase().endsWith("jpeg"));
}
});
int imgCount=imageslist.length;
imagepaths=new String[imgCount];
for(int i=0;i<imgCount;i++){
imagepaths[i]=imageslist[i].getAbsolutePath();
System.out.println("my image's paths are::::::::"+imagepaths[i]);
}
this.ticking=new boolean[imgCount];
ImageAdapter imgad=new ImageAdapter();
mygrid.setAdapter(imgad);
Button select=(Button)findViewById(R.id.button1);
select.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
final int len = ticking.length;
int cnt = 0;
String selectImages = "";
ArrayList<String> myarray=new ArrayList<String>();
for (int i =0; i<len; i++)
{
if (ticking[i]){
cnt++;
selectImages = selectImages + imagepaths[i] + "|";
myarray.add(imagepaths[i]);
}
}
Log.d("myarray","myarray size==="+myarray.size());
if (cnt == 0){
Toast.makeText(getApplicationContext(),"Please select at least one image",Toast.LENGTH_LONG).show();
}
else {
Toast.makeText(getApplicationContext(), "You've selected Total " + cnt + " image(s).",Toast.LENGTH_LONG).show();
Log.d("SelectedImages", selectImages);
try{
Intent emailintent=new Intent(android.content.Intent.ACTION_SEND_MULTIPLE);
emailintent.setType("application/octet-stream");
String[] addressvalue=new String[]{"user@domain.example"};
emailintent.putExtra(android.content.Intent.EXTRA_EMAIL, addressvalue);
emailintent.putExtra(android.content.Intent.EXTRA_SUBJECT, "subjectvalue");
String bccvalue[]={"bcc address"};
emailintent.putExtra(android.content.Intent.EXTRA_BCC, bccvalue);
String ccvalue[]={"cc address"};
emailintent.putExtra(android.content.Intent.EXTRA_CC,ccvalue );
ArrayList<Uri> newone=new ArrayList<Uri>();
for(int j=0;j<myarray.size();j++){
Uri u=Uri.parse("file:/"+myarray.get(j));
Log.d("uris", "myuris are:::::::"+u);
newone.add(u);
}
System.out.println("my uri array has values------->"+newone);
emailintent.putExtra(android.content.Intent.EXTRA_STREAM, newone);
GridcheckboxActivity.this.startActivity( Intent.createChooser(emailintent, "sending email using:"));
}catch(Exception e){
e.printStackTrace();
Log.d("error", "cannot start activity");
}
}
}
});
}
答案 0 :(得分：0)
检查你的xml＆amp;这个属性到列表android：choiceMode =“multipleChoice”并看到。
答案 1 :(得分：0)
我尝试了很多，并找到了我的问题的答案
public class GridcheckboxActivity extends Activity {
GridView mygrid;
String[] imagepaths;
Uri[] myUris;
boolean[] ticking;
ArrayList<String> myarray=new ArrayList<String>();
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mygrid=(GridView)findViewById(R.id.gridView1);
String folderpath=Environment.getExternalStorageDirectory().getAbsolutePath()+"/New Folder/";
File myfile=new File(folderpath);
File[] imageslist=myfile.listFiles(new FilenameFilter() {
@Override
public boolean accept(File dir, String filename) {
// TODO Auto-generated method stub
return (filename.toLowerCase().endsWith("jpg")||filename.toLowerCase().endsWith("png")||filename.toLowerCase().endsWith("jpeg"));
}
});
int imgCount=imageslist.length;
imagepaths=new String[imgCount];
for(int i=0;i<imgCount;i++){
imagepaths[i]=imageslist[i].getAbsolutePath();
System.out.println("my image's paths are::::::::"+imagepaths[i]);
}
this.ticking=new boolean[imgCount];
ImageAdapter imgad=new ImageAdapter();
mygrid.setAdapter(imgad);
Button select=(Button)findViewById(R.id.button1);
select.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
final int len = ticking.length;
int cnt = 0;
String selectImages = "";
for (int i =0; i<len; i++)
{
if (ticking[i]){
cnt++;
selectImages = selectImages + imagepaths[i] + "|";
myarray.add(imagepaths[i]);
}
}
Log.d("myarray","myarray size==="+myarray.size());
if (cnt == 0){
Toast.makeText(getApplicationContext(),"Please select at least one image",Toast.LENGTH_LONG).show();
}
else {
Toast.makeText(getApplicationContext(), "You've selected Total " + cnt + " image(s).",Toast.LENGTH_LONG).show();
Log.d("SelectedImages", selectImages);
try{
Intent emailintent=new Intent(android.content.Intent.ACTION_SEND_MULTIPLE);
emailintent.setType("application/octet-stream");
String[] addressvalue=new String[]{"user@domain.example"};
emailintent.putExtra(android.content.Intent.EXTRA_EMAIL, addressvalue);
emailintent.putExtra(android.content.Intent.EXTRA_SUBJECT, "subjectvalue");
String bccvalue[]={"bcc address"};
emailintent.putExtra(android.content.Intent.EXTRA_BCC, bccvalue);
String ccvalue[]={"cc address"};
emailintent.putExtra(android.content.Intent.EXTRA_CC,ccvalue );
ArrayList<Uri> axn=getUriListForImages();
emailintent.putExtra(android.content.Intent.EXTRA_STREAM, axn);
GridcheckboxActivity.this.startActivity( Intent.createChooser(emailintent, "sending email using:"));
}
catch(Exception e){
e.printStackTrace();
Log.d("error", "cannot start activity");
}
}
}
});
}
private ArrayList<Uri> getUriListForImages() throws Exception {
ArrayList<Uri> myList = new ArrayList<Uri>();
String imageDirectoryPath = Environment.getExternalStorageDirectory().getAbsolutePath()+ "/New Folder/";
if(myarray.size() != 0) {
for(int i=0; i<myarray.size(); i++)
{
try
{
ContentValues values = new ContentValues(7);
values.put(Images.Media.TITLE, myarray.get(i));
values.put(Images.Media.DISPLAY_NAME, myarray.get(i));
values.put(Images.Media.DATE_TAKEN, new Date().getTime());
values.put(Images.Media.MIME_TYPE, "image/jpeg");
values.put(Images.ImageColumns.BUCKET_ID, imageDirectoryPath.hashCode());
values.put(Images.ImageColumns.BUCKET_DISPLAY_NAME, myarray.get(i));
values.put("_data", myarray.get(i));
ContentResolver contentResolver = getApplicationContext().getContentResolver();
Uri uri = contentResolver.insert(Images.Media.EXTERNAL_CONTENT_URI, values);
myList.add(uri);
} catch (Exception e) {
e.printStackTrace();
}
}
}
return myList;
}
public class ImageAdapter extends BaseAdapter{
private LayoutInflater mInflater;
//Context mycontext;
public ImageAdapter() {
// TODO Auto-generated constructor stub
mInflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return imagepaths.length;
}
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return imagepaths[position];
}
@Override
public long getItemId(int position) {
// TODO Auto-generated method stub
return position;
}
@Override
public View getView(int position, View conview, ViewGroup arg2) {
// TODO Auto-generated method stub
viewholder myholder;
if(conview== null){
myholder=new viewholder();
conview=mInflater.inflate(R.layout.inflatexml,null);
myholder.img=(ImageView) conview.findViewById(R.id.imageView1);
myholder.cbox=(CheckBox) conview.findViewById(R.id.checkBox1);
conview.setTag(myholder);
}else{
myholder=(viewholder) conview.getTag();
}
myholder.img.setId(position);
myholder.cbox.setId(position);
myholder.cbox.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
CheckBox cb=(CheckBox)v;
int id=cb.getId();
if(ticking[id]){
cb.setChecked(false);
ticking[id]=false;
}else{
cb.setChecked(true);
ticking[id]=true;
}
}
});
myholder.img.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
int id=v.getId();
Intent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW);
intent.setDataAndType(Uri.parse("file:/"+imagepaths[id]), "image/*");
startActivity(intent);
}
});
Bitmap bm=BitmapFactory.decodeFile(""+imagepaths[position]);
Bitmap bm1=Bitmap.createScaledBitmap(bm, 140, 200, true);
myholder.img.setImageBitmap(bm1);
myholder.cbox.setChecked(ticking[position]);
myholder.cbox.setGravity(Gravity.TOP);
myholder.id=position;
return conview;
}
}
class viewholder{
ImageView img;
CheckBox cbox;
int id;
}
}