重写onCreate()方法

MiNote/app/src/main/java/net/micode/notes/ui/NoteEditActivity.java

@@ -47,6 +47,7 @@ import android.widget.CheckBox;
 import android.widget.CompoundButton;
 import android.widget.CompoundButton.OnCheckedChangeListener;
 import android.widget.EditText;
+import android.widget.ImageButton;
 import android.widget.ImageView;
 import android.widget.LinearLayout;
 import android.widget.TextView;
@@ -74,6 +75,7 @@ import java.util.regex.Pattern;
 
 public class NoteEditActivity extends Activity implements OnClickListener,
         NoteSettingChangedListener, OnTextViewChangeListener {
+    private static final int PHOTO_REQUEST = 1;
     private class HeadViewHolder {
         public TextView tvModified;
 
@@ -159,8 +161,26 @@ public class NoteEditActivity extends Activity implements OnClickListener,
             return;
         }
         initResources();
+
+        //根据id获取添加图片按钮
+        final ImageButton add_img_btn = (ImageButton) findViewById(R.id.add_img_btn);
+        //为点击图片按钮设置监听器
+        add_img_btn.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                Log.d(TAG, "onClick: click add image button");
+                //ACTION_GET_CONTENT: 允许用户选择特殊种类的数据，并返回（特殊种类的数据：照一张相片或录一段音）
+                Intent loadImage = new Intent(Intent.ACTION_GET_CONTENT);
+                //Category属性用于指定当前动作（Action）被执行的环境.
+                //CATEGORY_OPENABLE; 用来指示一个ACTION_GET_CONTENT的intent
+                loadImage.addCategory(Intent.CATEGORY_OPENABLE);
+                loadImage.setType("image/*");
+                startActivityForResult(loadImage, PHOTO_REQUEST);
+            }
+        });
     }
 
+
     /**
      * Current activity may be killed when the memory is low. Once it is killed, for another time
      * user load this activity, we should restore the former state