如何将线性布局转换为图像

Posted 2023-02-26

【中文标题】如何将线性布局转换为图像

【英文标题】：How to convert linearlayout to image

【发布时间】：2012-05-20 15:04:46

【问题描述】：

我想将完整的 layout 及其内容 (views) 转换为可绘制图像？

【问题讨论】：

可能重复：***.com/questions/5776684/…

【参考方案1】：

试试下面的代码：

---

public class androidWebImage extends Activity 

ImageView bmImage; 
LinearLayout view;
  /** Called when the activity is first created. */
  @Override
  public void onCreate(Bundle savedInstanceState) 
      super.onCreate(savedInstanceState);
      setContentView(R.layout.main);

      view = (LinearLayout)findViewById(R.id.screen);
      bmImage = (ImageView)findViewById(R.id.image);

      view.setDrawingCacheEnabled(true);
      // this is the important code :)  
      // Without it the view will have a dimension of 0,0 and the bitmap will be null          

      view.measure(MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED), 
            MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));

      view.layout(0, 0, view.getMeasuredWidth(), view.getMeasuredHeight()); 

      view.buildDrawingCache(true);
      Bitmap b = Bitmap.createBitmap(view.getDrawingCache());
      view.setDrawingCacheEnabled(false); // clear drawing cache

      bmImage.setImageBitmap(b);   

;

---

好好看看，你得用：

 view.measure(MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED), 
                MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED));

 view.layout(0, 0, view.getMeasuredWidth(), view.getMeasuredHeight()); 

---

我使用了以下 ma​​in.xml：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
  android:orientation="vertical"
   android:id="@+id/screen"
  android:layout_
  android:layout_
  >
<TextView
  android:layout_
  android:layout_
  android:text="@string/hello"
  />
<ImageView
  android:id="@+id/image"
  android:layout_
  android:layout_
/>
</LinearLayout>

---

结果是：

Reference

【讨论】：

你救了我哥们