更新文档和添加保存图片按钮

Author: D-clock

notes/00_Android系统相机拍照的常见问题及解决方案.md

@@ -0,0 +1,7 @@
+# Android系统相机拍照适配问题和方案
+
+## 基本的实现思路
+
+## 改进后的实现思路
+
+## 兼容Android 6.0的实现思路

notes/00_Android系统相机拍照适配问题和方案.md

@@ -5,6 +5,7 @@
 import android.graphics.Bitmap;
 import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;
+import android.util.Log;
 import android.widget.ImageView;
 
 import com.clock.study.R;
@@ -33,13 +34,17 @@ protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_photo_preview);
 
-        mPhotoPreview = (ImageView) findViewById(R.id.iv_photo_preview);
+        mPhotoPreview = (ImageView) findViewById(R.id.iv_preview_photo);
 
         mImageFile = (File) getIntent().getSerializableExtra(EXTRA_IMAGE);
         int requestWidth = (int) (RuleUtils.getScreenWidth(this) * RATIO);
         int requestHeight = (int) (RuleUtils.getScreenHeight(this) * RATIO);
         Bitmap bitmap = BitmapUtils.decodeBitmapFromFile(mImageFile, requestWidth, requestHeight);//按照屏幕宽高的3/4比例进行缩放显示
         if (bitmap != null) {
+            int degree = BitmapUtils.getBitmapDegree(mImageFile.getAbsolutePath());//检查是否有被旋转，并进行纠正
+            if (degree != 0) {
+                bitmap = BitmapUtils.rotateBitmapByDegree(bitmap, degree);
+            }
             mPhotoPreview.setImageBitmap(bitmap);
         }
     }
@@ -49,4 +54,5 @@ public static void preview(Activity activity, File file) {
         previewIntent.putExtra(EXTRA_IMAGE, file);
         activity.startActivity(previewIntent);
     }
+
 }

src/main/java/com/clock/study/activity/PhotoPreviewActivity.java

@@ -1,14 +1,24 @@
 <?xml version="1.0" encoding="utf-8"?>
-<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
+    android:orientation="vertical"
     android:paddingBottom="@dimen/activity_vertical_margin"
     android:paddingLeft="@dimen/activity_horizontal_margin"
     android:paddingRight="@dimen/activity_horizontal_margin"
     android:paddingTop="@dimen/activity_vertical_margin">
 
+    <Button
+        android:id="@+id/btn_save_photo"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/save_photo" />
+
     <ImageView
-        android:id="@+id/iv_photo_preview"
+        android:id="@+id/iv_preview_photo"
         android:layout_width="match_parent"
-        android:layout_height="match_parent" />
-</RelativeLayout>
+        android:layout_height="match_parent"
+        android:layout_marginTop="5dp" />
+
+
+</LinearLayout>

src/main/res/layout/activity_photo_preview.xml

@@ -3,4 +3,5 @@
     <string name="start_camera_error">启动相机失败</string>
     <string name="photo_preview">PhotoPreview</string>
     <string name="take_photo">TakePhoto</string>
+    <string name="save_photo">保存图片</string>
 </resources>