如何获取联系人的照片？

Question

我需要获取联系人的照片。所以我得到了联系人的ID并使用以下功能获取照片。

Log.i(MenuActivity.TAG, "START: getContactPhoto; PARAMETERS: id: " + String.valueOf(id)); 
Uri photoUri = ContentUris.withAppendedId(ContactsContract.Contacts.CONTENT_URI, id); 

Bitmap photo; 
ContentResolver cr = context.getContentResolver(); 
InputStream is = ContactsContract.Contacts.openContactPhotoInputStream(cr, photoUri); 

photo = BitmapFactory.decodeStream(is); 

return photo; 

而且这照片设置为ImageView的

if (photo != null) { 
     Log.d(MenuActivity.TAG, "Photo exists"); 
     imageView.setImageBitmap(photo); 
} else { 
     Log.e(MenuActivity.TAG, "No photo for contact " + name); 
     imageView.setImageResource(R.drawable.defult_foto); 
} 

我的logcat：

START: getContactPhoto; PARAMETERS: id: 148 
Photo uri: content://com.android.contacts/contacts/148 
No photo for contact Ivan 

的方式，我得到接触ID：

Uri uri = ContactsContract.Data.CONTENT_URI; 

String[] projection = new String[]{ 
      ContactsContract.Contacts._ID, 
      ContactsContract.Contacts.DISPLAY_NAME, 
      ContactsContract.CommonDataKinds.Event.CONTACT_ID, 
      ContactsContract.CommonDataKinds.Event.START_DATE, 
}; 

String where = 
      ContactsContract.Data.MIMETYPE + "= ? AND " + 
        ContactsContract.CommonDataKinds.Event.TYPE + "=" +       ContactsContract.CommonDataKinds.Event.TYPE_BIRTHDAY; 

String[] selectionArgs = new String[]{ContactsContract.CommonDataKinds.Event.CONTENT_ITEM_TYPE}; 

String sortOrder = null; 

ContentResolver cr = context.getContentResolver(); 
Cursor cursor = cr.query(uri, projection, where, selectionArgs, sortOrder); 

if (cursor.moveToFirst()) { 
    while (cursor.moveToNext()) { 
     try { 
      id = "no-id"; 

      birthday = cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Event.START_DATE)); 
      name = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME)); 
      id = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts._ID)); 

      // some code 

     } catch (Exception e) { 
      Log.e("Days", "No birthday date!"); 
     } 
    } 
} 
cursor.close(); 

但最高审计机关认为没有我的联系人有照片，但它已经。我相信他是错误的。有任何想法吗？

PS我有点小白在andrid却又如此，如果它不会是很困难的具体

Answer 1

使用此示例代码来获取缩略图

布局

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:tools="http://schemas.android.com/tools" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
tools:context=".MainActivity" > 

<Spinner 
    android:id="@+id/spinner1" 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:layout_alignParentLeft="true" 
    android:layout_alignParentTop="true" /> 

<ImageView 
    android:id="@+id/imageView1" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_alignParentLeft="true" 
    android:layout_below="@+id/spinner1" 
    android:layout_marginLeft="58dp" 
    android:layout_marginTop="60dp" 
    android:src="@drawable/ic_launcher" /> 

</RelativeLayout> 

活动代码

package com.example.contactsdisplaypic; 

import java.io.ByteArrayInputStream; 

import android.app.Activity; 
import android.content.ContentResolver; 
import android.content.ContentUris; 
import android.content.Context; 
import android.database.Cursor; 
import android.graphics.Bitmap; 
import android.graphics.BitmapFactory; 
import android.net.Uri; 
import android.os.AsyncTask; 
import android.os.Bundle; 
import android.provider.ContactsContract; 
import android.provider.ContactsContract.Contacts; 
import android.support.v4.widget.CursorAdapter; 
import android.view.Menu; 
import android.view.View; 
import android.widget.AdapterView; 
import android.widget.AdapterView.OnItemSelectedListener; 
import android.widget.ImageView; 
import android.widget.SimpleCursorAdapter; 
import android.widget.Spinner; 
import android.widget.Toast; 

public class MainActivity extends Activity { 

Context mContext; 
public SimpleCursorAdapter sca; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 

    mContext = this; 

    new LoadContactsTask().execute(); 
} 

class LoadContactsTask extends AsyncTask<Void, Void, Cursor> { 

    @Override 
    protected Cursor doInBackground(Void... params) { 
     Uri uri = ContactsContract.Data.CONTENT_URI; 

     String[] projection = new String[]{ 
        ContactsContract.Contacts._ID, 
        ContactsContract.Contacts.DISPLAY_NAME, 
        ContactsContract.CommonDataKinds.Event.CONTACT_ID, 
        ContactsContract.CommonDataKinds.Event.START_DATE, 
     }; 

     String where = 
        ContactsContract.Data.MIMETYPE + "= ? AND " + 
          ContactsContract.CommonDataKinds.Event.TYPE + "=" + 
          ContactsContract.CommonDataKinds.Event.TYPE_BIRTHDAY; 

     String[] selectionArgs = new String[]{ContactsContract.CommonDataKinds.Event.CONTENT_ITEM_TYPE}; 

     String sortOrder = null; 

     ContentResolver cr = mContext.getContentResolver(); 
     Cursor cursor = cr.query(uri, projection, where, selectionArgs, sortOrder); 
     cursor.moveToFirst(); 
     return cursor; 
    } 

    @Override 
    protected void onPostExecute(Cursor result) { 
     // create an array to specify which fields we want to display 
     String[] from = new String[]{ContactsContract.Contacts.DISPLAY_NAME, 
       ContactsContract.CommonDataKinds.Event.CONTACT_ID}; 
     // create an array of the display item we want to bind our data to 
     int[] to = new int[]{android.R.id.text1, android.R.id.text2}; 
     // create simple cursor adapter 
     sca = 
      new SimpleCursorAdapter(mContext, android.R.layout.simple_expandable_list_item_2, result, from, to, 
        CursorAdapter.FLAG_REGISTER_CONTENT_OBSERVER); 
     sca.setDropDownViewResource(android.R.layout.simple_expandable_list_item_2); 
     // get reference to our spinner 
     Spinner s = (Spinner) findViewById(R.id.spinner1); 
     s.setAdapter(sca); 

     s.setOnItemSelectedListener(new OnItemSelectedListener() { 
      @Override 
      public void onItemSelected(AdapterView<?> parentView, 
        View selectedItemView, int position, long id) { 
       Toast.makeText(mContext, "contact id " + sca.getCursor().getString(2), Toast.LENGTH_LONG).show(); 
       new LoadPicturesTask().execute(sca.getCursor().getString(2)); 
      } 

      @Override 
      public void onNothingSelected(AdapterView<?> parentView) { 

      } 

     }); 
    } 

} 

private class LoadPicturesTask extends AsyncTask<String, Void, Bitmap[]> { 

    @Override 
    protected Bitmap[] doInBackground(String... contactId) { 
     Bitmap[] array = new Bitmap[2]; 

     Uri contactUri = ContentUris.withAppendedId(Contacts.CONTENT_URI, 
       Long.parseLong(contactId[0])); 

     // thumbnail 
     Uri photoUri = Uri.withAppendedPath(contactUri, Contacts.Photo.CONTENT_DIRECTORY); 
     Cursor cursor = getContentResolver().query(photoUri, 
      new String[] {Contacts.Photo.PHOTO}, null, null, null); 
     try { 
      if (cursor.moveToFirst()) { 
       byte[] data = cursor.getBlob(0); 
       if (data != null) { 
        array[0] = BitmapFactory.decodeStream(new ByteArrayInputStream(data)); 
       } 
      } 
     } finally { 
      cursor.close(); 
     } 

     return array; 
    } 

    @Override 
    protected void onPostExecute(Bitmap[] result) { 
     if (result != null) { 
      ImageView img1 = (ImageView) findViewById(R.id.imageView1); 
      img1.setImageBitmap(result[0]); 
     } 
    } 

} 

@Override 
public boolean onCreateOptionsMenu(Menu menu) { 
    // Inflate the menu; this adds items to the action bar if it is present. 
    getMenuInflater().inflate(R.menu.main, menu); 
    return true; 
    } 

} 

我能够获取一些联系人的生日存储然后缩略图被提取出来供谁使用。