我有两个密切相关的主要问题.我从程序化的角度来看这些问题.
(1) – 我想截取SPECIFIC布局的内容,即嵌套在LinearLayout中的ScrollView.
(2) – 由于ScrollView具有溢出屏幕的内容(因此可以进行滚动),我该如何确保屏幕截图包含屏幕上不可见的元素？
这是我使用的当前代码块.它的工作是拍摄截图,但只能用于整个屏幕.即使是R.id.boss是ScrollView的ID,而不是主要的LinearLayout.
View view = findViewById(R.id.boss); View v = view.getRootView();// this does not seem to make a difference v.setDrawingCacheEnabled(true); v.measure(MeasureSpec.makeMeasureSpec(0,MeasureSpec.UNSPECIFIED),MeasureSpec.makeMeasureSpec(0,MeasureSpec.UNSPECIFIED)); v.layout(0,v.getMeasuredWidth(),v.getMeasuredHeight()); v.buildDrawingCache(true); Bitmap b = Bitmap.createBitmap(u.getDrawingCache()); v.setDrawingCacheEnabled(false);
提前致谢.
编辑：
我犯了一些错误.我使用了R.id.boss这是错误的资源.我现在可以单独浏览scrollview的屏幕截图,而不是屏幕外的部分.
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/boss"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_gravity="top"
android:orientation="vertical" >
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="F"
android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Analyze via image URL"
android:textAppearance="?android:attr/textAppearanceSmall" />
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
>
<EditText
android:id="@+id/mUrl"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="0.7"
android:text="http://" >
<requestFocus />
</EditText>
<ImageView
android:id="@+id/call"
android:layout_width="75dp"
android:layout_height="50dp"
android:layout_weight="0.3"
android:text="ABC"
android:src="@drawable/run" />
</LinearLayout>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="ABC"
android:textAppearance="?android:attr/textAppearanceSmall" />
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<EditText
android:id="@+id/filepath"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_weight="0.55" />
<ImageView
android:id="@+id/cam"
android:layout_width="75dp"
android:layout_height="50dp"
android:layout_weight="0.15"
android:src="@drawable/cam" />
<ImageView
android:id="@+id/browse"
android:layout_width="75dp"
android:layout_height="50dp"
android:layout_weight="0.15"
android:src="@drawable/folder"
android:text="B" />
<ImageView
android:id="@+id/upload"
android:layout_width="75dp"
android:layout_height="50dp"
android:layout_weight="0.15"
android:src="@drawable/run"
android:text="A" />
</LinearLayout>
<LinearLayout
android:id="@+id/baba"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<ScrollView
android:id="@+id/scroll"
android:layout_width="fill_parent"
android:layout_height="150dp"
android:layout_weight="0.7" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="186dp"
android:orientation="vertical" >
<ImageView
android:id="@+id/pic"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_weight="1" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Facial recognition"
android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
android:id="@+id/text3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Small Text"
android:textAppearance="?android:attr/textAppearanceSmall" />
<TextView
android:id="@+id/avmarwe"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Gender and age"
android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
android:id="@+id/text1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Small Text"
android:textAppearance="?android:attr/textAppearanceSmall" />
<TextView
android:id="@+id/skahasd"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Expression and mood"
android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
android:id="@+id/text2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Small Text"
android:textAppearance="?android:attr/textAppearanceSmall" />
<TextView
android:id="@+id/dsfsfs"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Celebrity Facial Match"
android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
android:id="@+id/text4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="Small Text"
android:textAppearance="?android:attr/textAppearanceSmall" />
</LinearLayout>
</ScrollView>
</LinearLayout>
<LinearLayout
android:id="@+id/linearLayout1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom" >
<Button
android:id="@+id/c"
android:layout_width="fill_parent"
android:layout_height="50dp"
android:layout_weight="0.7"
android:text="" />
<Button
android:id="@+id/share"
android:layout_width="70dp"
android:layout_height="50dp"
android:layout_weight="0.3"
android:text="" />
</LinearLayout>
</LinearLayout>
解决方法
感谢你们,我终于发现了什么是错的.
查看v = view.getRootView();不应该被使用,因为它会调用我不想要的根视图.我错误地认为这没有什么不同,因为我输入错误的资源ID.
MeasureSpec以某种方式没有给出良好的宽度和高度的描述.所以我最后使用另一种方法：
... ScrollView z = (ScrollView) findViewById(R.id.scroll); int totalHeight = z.getChildAt(0).getHeight(); int totalWidth = z.getChildAt(0).getWidth(); u.layout(0,totalWidth,totalHeight); ...
由于ScrollView的总高度可以由单个子元素确定.
进行这些更改后,我现在可以截取一个嵌套的ScrollView及其所有内容的屏幕截图.对于任何有兴趣的人来说,这里是代码块,包括保存位图：
View u = findViewById(R.id.scroll);
u.setDrawingCacheEnabled(true);
ScrollView z = (ScrollView) findViewById(R.id.scroll);
int totalHeight = z.getChildAt(0).getHeight();
int totalWidth = z.getChildAt(0).getWidth();
u.layout(0,totalHeight);
u.buildDrawingCache(true);
Bitmap b = Bitmap.createBitmap(u.getDrawingCache());
u.setDrawingCacheEnabled(false);
//Save bitmap
String extr = Environment.getExternalStorageDirectory().toString() + File.separator + "Folder";
String fileName = new SimpleDateFormat("yyyyMMddhhmm'_report.jpg'").format(new Date());
File myPath = new File(extr,fileName);
FileOutputStream fos = null;
try {
fos = new FileOutputStream(myPath);
b.compress(Bitmap.CompressFormat.JPEG,100,fos);
fos.flush();
fos.close();
MediaStore.Images.Media.insertImage(getContentResolver(),b,"Screen","screen");
}catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
