android脚步---将layout和其输出一起保存成图片

2022-11-17 09:28:40

public void convertViewToBitmap(View view) {

        //View view = getLayoutInflater().inflate(R.layout.test_layout, null);

       view.setDrawingCacheEnabled(true);

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

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

            view.buildDrawingCache();

             bitmap = view.getDrawingCache();

            Date date = new Date(System.currentTimeMillis());

            Storage.writeBitmapFile("/sdcard/DCIM/UUCamera/test"+date.toLocaleString()+".jpeg", bitmap);

         //  Testbt.setVisibility(View.VISIBLE);

            view.destroyDrawingCache();

            }

输入layout对应的vIEW然后进行操作，保存时应用了date，这样每张图片的保存名不同。

应该要注意的是view.measure和 view.layout(0, 0, view.getMeasuredWidth(), view.getMeasuredHeight());对layout重新进行计算高度和宽度，所以layout务必要封装好，不然会出现移位

以下面layout为例

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

   android:layout_width="match_parent"

   android:layout_height="match_parent"

   android:orientation="vertical"

    >

<LinearLayout android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:id="@+id/screen"

    android:background="@drawable/test_bg"

    android:gravity="center_horizontal"

    android:orientation="vertical">

    <RelativeLayout

        android:id="@+id/uupic"

        android:layout_width="304dp"

        android:layout_height="380dp"

        android:layout_marginTop="90dp"

        android:background="@drawable/test_photo_bg"

        android:gravity="center"

        >

      <ImageView

            android:id="@+id/myuupic"

            android:layout_width="264dp"

            android:layout_height="352dp"/>

    </RelativeLayout>

 <RelativeLayout

    android:id="@+id/lovepic"

    android:layout_height="116dp"

    android:layout_width="match_parent"

    >

<TextView

    android:id="@+id/agetext"

    android:layout_width="120dp"

    android:layout_height="116dp"

    android:gravity="center"

    android:textColor="#ffffff"

    android:textSize="@dimen/age_text_size"

    android:background="@drawable/test_age_bg"/>

<ImageView

    android:id="@+id/genderpic"

    android:layout_width="44dp"

    android:layout_height="44dp"

    android:layout_toRightOf="@+id/agetext"

    android:layout_alignParentBottom="true"

    android:layout_marginLeft="-30dp"

       android:scaleType="fitEnd"/>

<ImageView

    android:id="@+id/testimg"

    android:layout_width="222dp"

    android:layout_height="86dp"

    android:layout_toRightOf="@+id/agetext"

    android:layout_alignParentBottom="true"

    />

</RelativeLayout>

</LinearLayout>

<!-- share and save layout -->

 <RelativeLayout

     android:id="@+id/testbt"

     android:layout_width="wrap_content"

     android:layout_height="wrap_content"

     android:layout_alignParentLeft="true"

     android:layout_alignParentBottom="true"

     android:layout_marginLeft="24dp"

     android:layout_marginRight="24dp"

     android:layout_marginBottom="20dp"

     >

     <Button

         android:id="@+id/save"

         android:layout_width="148dp"

         android:layout_height="40dp"

         android:layout_alignParentLeft="true"

         android:layout_alignParentTop="true"

         android:background="@drawable/testbtstyle"

         android:text="保存"

         android:textColor="#ff4c6c"

         android:textSize="20sp" />

     <Button

         android:id="@+id/share"

         android:layout_width="148dp"

         android:layout_height="40dp"

         android:layout_alignParentRight="true"

         android:layout_alignParentTop="true"

         android:background="@drawable/testbtstyle"

         android:text="分享"

         android:textColor="#ff4c6c"

         android:textSize="20sp" />

 </RelativeLayout>

</RelativeLayout>

封装成两部分上边显示，下边隐藏

引用时

mScreenShot = mTestView.findViewById(R.id.screen);

public void convertViewToBitmap(View view) {

        //View view = getLayoutInflater().inflate(R.layout.test_layout, null);

       view.setDrawingCacheEnabled(true);

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

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

            view.buildDrawingCache();

             bitmap = view.getDrawingCache();

            Date date = new Date(System.currentTimeMillis());

            Storage.writeBitmapFile("/sdcard/DCIM/UUCamera/test"+date.toLocaleString()+".jpeg", bitmap);

           // FileOutputStream fos = new FileOutputStream("/sdcard/DCIM/UUCamera/test.png");

            //将Bitmap对象中的图像数据压缩成png格式的图像数据，并将这些数据保存在test.png文件中

        //    bitmap.compress(CompressFormat.PNG, 100, fos);

            //关闭文件输出流

         //  Testbt.setVisibility(View.VISIBLE);

            view.destroyDrawingCache();

        if(!ispicsave()) {

                return;

            }

    }

case R.id.save:

                LogMan.e(TAG,"save...");    

                if(mScreenShot!=null){

//                    Testbt.setVisibility(View.INVISIBLE);

                    convertViewToBitmap(mScreenShot);

                }

//                Testbt.setVisibility(View.VISIBLE);

                break;

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