android、获取本地图片|直接获取照相图片

在此调查中我要实现的是：点击Pictures按钮后，获取手机内所有图片，选择某一个图片，并显示到ImageView中。

应用范围： 图片上传时的图片选择  ， 类似"浏览"。

所有的图片都会列出来，包括目录。

在Activity Action里面有一个“ACTION_GET_CONTENT”字符串常量，该常量让用户选择特定类型的数据，并返回该数据的URI.我们利用该常量，然后设置类型为“image/*”，就可获得Android手机内的所有image。

 

 <span style="font-size:18px;">public class Lesson_01_Pic extends Activity {
     /** Called when the activity is first created. */
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.main);

         Button button = (Button)findViewById(R.id.b01);
         button.setText("选择图片");
         button.setOnClickListener(new Button.OnClickListener(){
             @Override
             public void onClick(View v) {
                 Intent intent = new Intent();
                 /* 开启Pictures画面Type设定为image */
                 intent.setType("image/*");
                 /* 使用Intent.ACTION_GET_CONTENT这个Action */
                 intent.setAction(Intent.ACTION_GET_CONTENT);
                 /* 取得相片后返回本画面 */
                 startActivityForResult(intent, 1);
             }

         });
     }

     @Override
     protected void onActivityResult(int requestCode, int resultCode, Intent data) {
         if (resultCode == RESULT_OK) {
             Uri uri = data.getData();
             Log.e("uri", uri.toString());
             ContentResolver cr = this.getContentResolver();
             try {
                 Bitmap bitmap = BitmapFactory.decodeStream(cr.openInputStream(uri));
                 ImageView imageView = (ImageView) findViewById(R.id.iv01);
                 /* 将Bitmap设定到ImageView */
                 imageView.setImageBitmap(bitmap);
             } catch (FileNotFoundException e) {
                 Log.e("Exception", e.getMessage(),e);
             }
         }
         super.onActivityResult(requestCode, resultCode, data);
     }
 }
 </span>

 

 

好了，就将这么多。

下面是可以获取当前拍照的方法：

 <span style="font-size:18px;">new AlertDialog.Builder(EditInfoActivity.this)
                 .setTitle(R.string.update_select_dialog)
                 .setItems(R.array.update_user_icon,
                         new DialogInterface.OnClickListener() {
                             public void onClick(DialogInterface dialog,
                                     int which) {
                                 /* User clicked so do some stuff */
                                 switch (which) {
                                 case 0:
                                     Intent i = new Intent(
                                             MediaStore.ACTION_IMAGE_CAPTURE);
                                     startActivityForResult(i, REQ_CODE_CAMERA);
                                     break;
                                 case 1:
                                     Intent intent = new Intent();
                                     intent.setData(Uri
                                             .parse("content://media/internal/images/media"));
                                     intent.setAction(Intent.ACTION_PICK);
                                     startActivityForResult(Intent
                                             .createChooser(intent,
                                                     "Select Picture"),
                                             REQ_CODE_PICTURE);
                                     break;
                                 }
                             }
                         }).create().show();
         /* 0 --> 手机拍照；
               1 --> 手机相册 */</span>

 <span style="font-size:18px;">@Override
     protected void onActivityResult(int requestCode, int resultCode, Intent data) {
         if (resultCode == RESULT_OK) {
             switch (requestCode) {
             case REQ_CODE_CAMERA:
                 Bundle bundle = data.getExtras();
                 // Uri camareUri = (Uri) bundle.get(MediaStore.EXTRA_OUTPUT);
                 Log.i("Camre", data.getDataString());
                 Bitmap camerabmp = (Bitmap) data.getExtras().get("data");
                 ivIcon.setImageBitmap(camerabmp);
                 break;
             case REQ_CODE_PICTURE:
                 Uri uri = data.getData();
                 Cursor cursor = getContentResolver().query(uri, null, null,
                         null, null);
                 cursor.moveToFirst();
                 try {
                     srcpath = cursor.getString(1);

                     Log.i("OnActivtyResult",
                             "File path :[" + cursor.getColumnCount() + srcpath
                                     + "]");
                     InputStream is = new FileInputStream(cursor.getString(1));
                     Bitmap bmp = ImageLoader.createBitmap(is, 1);
                     ivIcon.setImageBitmap(bmp);
                 } catch (Exception e) {
                     e.printStackTrace();
                 }
                 break;
             }

         }
         super.onActivityResult(requestCode, resultCode, data);
     }</span>