我正在努力做下一个： 我有一个ImageView，我希望它在用户触摸它时让它出现一个图片浏览器或相机让他选择或拍照。 我发现了：
private void openPictureBrowser()
{
Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
intent.setType("image/*");
intent.putExtra(Intent.EXTRA_TITLE,"A Custom Title"); //optional
intent.addFlags(Intent.FLAG_ACTIVITY_EXCLUDE_FROM_RECENTS); //optional
try {
startActivityForResult(intent, 1);
} catch (Exception e) {
e.printStackTrace();
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data){
switch (requestCode) {
case 1: {
if (resultCode == RESULT_OK && data != null && data.getData() != null) {
String filePath = data.getData().getPath(); //WARNING: this is NOT your real path (in my case, value is set to "/external/images/media/4"
}
}
}
}
如果我想添加相机，我可以在openPictureBrowser中做什么？
在onActivityResult中我应该怎么做才能将filePath设置为ImageView背景？
任何人都可以给我一个暗示吗？
Thanxs！
答案 0 :(得分：0)
public class Set_image extends Activity implements OnClickListener
{
Button btn_capture_image,btn_share_from_gallery;
ImageView iv_set_image;
private static final int REQUEST_CODE = 1;
private static final int CAMERA_REQUEST = 1888;
String filePath="";
Bitmap Main_bitmap;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.set_image);
btn_capture_image =(Button) findViewById(R.id.button_capture_image);
btn_share_from_gallery =(Button) findViewById(R.id.button_share_from_gallery);
iv_set_image = (ImageView) findViewById(R.id.imageView_set_iamge);
btn_capture_image.setOnClickListener(this);
btn_share_from_gallery.setOnClickListener(this);
}
public void onClick(View v)
{
if (v == btn_capture_image)
{
Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(cameraIntent, CAMERA_REQUEST);
}
if (v == btn_share_from_gallery)
{
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
intent.addCategory(Intent.CATEGORY_OPENABLE);
startActivityForResult(intent, REQUEST_CODE);
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
if (requestCode == CAMERA_REQUEST)
{
Main_bitmap = (Bitmap) data.getExtras().get("data");
iv_set_image.setImageBitmap(Main_bitmap);
}
if (requestCode == REQUEST_CODE && resultCode == Activity.RESULT_OK)
try
{
Uri selectedImage = data.getData();
String[] filePathColumn = {MediaStore.Images.Media.DATA};
Cursor cursor = getContentResolver().query(selectedImage, filePathColumn, null, null, null);
if (cursor.moveToFirst())
{
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
filePath = cursor.getString(columnIndex);
BitmapFactory.Options options4 = new BitmapFactory.Options();
options4.inSampleSize = 1;
Main_bitmap = BitmapFactory.decodeFile(filePath, options4); iv_set_image.setImageBitmap(Main_bitmap);
}
cursor.close();
}
catch (Exception e)
{
e.printStackTrace();
}
super.onActivityResult(requestCode, resultCode, data);
}
答案 1 :(得分：-1)
使用以下代码：
import java.io.File;
import java.util.ArrayList;
import java.util.Calendar;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.util.Log;
import android.view.ContextMenu;
import android.view.Gravity;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.Window;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.View.OnClickListener;
import android.view.ViewGroup.LayoutParams;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TableLayout;
import android.widget.TableRow;
import android.widget.TextView;
public class LoadImage extends Activity
{
Activity activity=null;
Context context=null;
Button header_left_btn=null;
Button header_right_btn=null;
TextView header_text=null;
TableLayout image_table=null;
ArrayList<String> image_list=new ArrayList<String>();
ArrayList<Drawable> image_drawable=new ArrayList<Drawable>();
String path="";
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_CUSTOM_TITLE);
setContentView(R.layout.main);
getWindow().setFeatureInt(Window.FEATURE_CUSTOM_TITLE,R.layout.header);
activity=LoadImage.this;
context=LoadImage.this;
header_left_btn=(Button)findViewById(R.id.header_left_btn);
header_right_btn=(Button)findViewById(R.id.header_right_btn);
header_text=(TextView)findViewById(R.id.header_text);
image_table=(TableLayout)findViewById(R.id.image_table);
header_text.setText("Image Table");
header_left_btn.setText("Select");
header_right_btn.setText("Clear");
registerForContextMenu(header_left_btn);
header_left_btn.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v)
{
// TODO Auto-generated method stub
openContextMenu(header_left_btn);
}
});
header_right_btn.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v)
{
// TODO Auto-generated method stub
image_list.clear();
image_drawable.clear();
deletePhotos();
updateImageTable();
}
});
}
public void deletePhotos()
{
String folder=Environment.getExternalStorageDirectory() +"/LoadImg";
File f=new File(folder);
if(f.isDirectory())
{
File[] files=f.listFiles();
Log.v("Load Image", "Total Files To Delete=====>>>>>"+files.length);
for(int i=0;i<files.length;i++)
{
String fpath=folder+File.separator+files[i].getName().toString().trim();
System.out.println("File Full Path======>>>"+fpath);
File nf=new File(fpath);
if(nf.exists())
{
nf.delete();
}
}
}
}
@Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo)
{
super.onCreateContextMenu(menu, v, menuInfo);
menu.setHeaderTitle("Post Image");
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.camer_menu, menu);
}
@Override
public boolean onContextItemSelected(MenuItem item)
{
switch (item.getItemId())
{
case R.id.take_photo:
//Toast.makeText(context, "Selected Take Photo", Toast.LENGTH_SHORT).show();
takePhoto();
break;
case R.id.choose_gallery:
//Toast.makeText(context, "Selected Gallery", Toast.LENGTH_SHORT).show();
Intent photoPickerIntent = new Intent(Intent.ACTION_PICK);
photoPickerIntent.setType("image/*");
startActivityForResult(photoPickerIntent, 1);
break;
case R.id.share_cancel:
closeContextMenu();
break;
default:
return super.onContextItemSelected(item);
}
return true;
}
public void takePhoto()
{
Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");
File folder = new File(Environment.getExternalStorageDirectory() + "/LoadImg");
if(!folder.exists())
{
folder.mkdir();
}
final Calendar c = Calendar.getInstance();
String new_Date= c.get(Calendar.DAY_OF_MONTH)+"-"+((c.get(Calendar.MONTH))+1) +"-"+c.get(Calendar.YEAR) +" " + c.get(Calendar.HOUR) + "-" + c.get(Calendar.MINUTE)+ "-"+ c.get(Calendar.SECOND);
path=String.format(Environment.getExternalStorageDirectory() +"/LoadImg/%s.png","LoadImg("+new_Date+")");
File photo = new File(path);
intent.putExtra(MediaStore.EXTRA_OUTPUT,Uri.fromFile(photo));
startActivityForResult(intent, 2);
}
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data)
{
super.onActivityResult(requestCode, resultCode, data);
if(requestCode==1)
{
Uri photoUri = data.getData();
if (photoUri != null)
{
String[] filePathColumn = {MediaStore.Images.Media.DATA};
Cursor cursor = getContentResolver().query(photoUri, filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String filePath = cursor.getString(columnIndex);
cursor.close();
Log.v("Load Image", "Gallery File Path=====>>>"+filePath);
image_list.add(filePath);
Log.v("Load Image", "Image List Size=====>>>"+image_list.size());
//updateImageTable();
new GetImages().execute();
}
}
if(requestCode==2)
{
Log.v("Load Image", "Camera File Path=====>>>"+path);
image_list.add(path);
Log.v("Load Image", "Image List Size=====>>>"+image_list.size());
//updateImageTable();
new GetImages().execute();
}
}
public void updateImageTable()
{
image_table.removeAllViews();
if(image_drawable.size() > 0)
{
for(int i=0; i<image_drawable.size(); i++)
{
TableRow tableRow=new TableRow(this);
tableRow.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
tableRow.setGravity(Gravity.CENTER_HORIZONTAL);
tableRow.setPadding(5, 5, 5, 5);
for(int j=0; j<1; j++)
{
ImageView image=new ImageView(this);
image.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT));
/*Bitmap bitmap = BitmapFactory.decodeFile(image_list.get(i).toString().trim());
bitmap = Bitmap.createScaledBitmap(bitmap,500, 500, true);
Drawable d=loadImagefromurl(bitmap);*/
image.setBackgroundDrawable(image_drawable.get(i));
tableRow.addView(image, 200, 200);
}
image_table.addView(tableRow);
}
}
}
public Drawable loadImagefromurl(Bitmap icon)
{
Drawable d=new BitmapDrawable(icon);
return d;
}
public class GetImages extends AsyncTask<Void, Void, Void>
{
public ProgressDialog progDialog=null;
protected void onPreExecute()
{
progDialog=ProgressDialog.show(context, "", "Loading...",true);
}
@Override
protected Void doInBackground(Void... params)
{
image_drawable.clear();
for(int i=0; i<image_list.size(); i++)
{
Bitmap bitmap = BitmapFactory.decodeFile(image_list.get(i).toString().trim());
bitmap = Bitmap.createScaledBitmap(bitmap,500, 500, true);
Drawable d=loadImagefromurl(bitmap);
image_drawable.add(d);
}
return null;
}
protected void onPostExecute(Void result)
{
if(progDialog.isShowing())
{
progDialog.dismiss();
}
updateImageTable();
}
}
}
我从以下链接获得此代码： http://tjkannan.blogspot.in/2012/01/load-image-from-camera-or-gallery.html
希望这会对你有所帮助。