Question

我想将textView转换为Bitmap但我得到的是黑屏而不是textview中的数据。

屏幕我要转换

绘制缓存后我得到的屏幕

我不知道自己哪里出错了。

以下是我的代码

abc.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:weightSum="3"
android:paddingBottom="5dp"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:context="com.bgc.activity.AlterQuotes"
tools:showIn="@layout/activity_alter_quotes">

<RelativeLayout
    android:id="@+id/AlterQuotesrl"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_weight="1.18">

    <TextView
        android:id="@+id/AlterQuotestvTestText"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:textSize="15sp"
        android:textColor="#000000"
        android:background="@drawable/frame"
        android:layout_gravity="center"
        android:gravity="center"
        android:text="@string/sample_name"/>

</RelativeLayout>

</LinearLayout>

abc.java

RelativeLayout z = (RelativeLayout) findViewById(R.id.AlterQuotesrl);
z.setDrawingCacheEnabled(true);
z.buildDrawingCache();
Bitmap bitmapSetDrawingChache = Bitmap.createBitmap(z.getDrawingCache());
ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
bitmapSetDrawingChache.compress(Bitmap.CompressFormat.JPEG, 100, byteArrayOutputStream);

// saving in sdcard
File file = new File(Environment.getExternalStorageDirectory().toString() + File.separator + "Birthday Card" + File.separator);
if(!file.exists())
    file.mkdirs();

String imageName = "Image-" + DateFormat.getDateTimeInstance().format(new Date()) + ".jpg";

fileImagePath = new File(file,imageName);
try {
    FileOutputStream fileOutputStream = new FileOutputStream(fileImagePath);
    fileOutputStream.write(byteArrayOutputStream.toByteArray());
    fileOutputStream.close();

    AlertDialog.Builder adb = new AlertDialog.Builder(AlterQuotes.this);
    adb.setTitle("Alert");
    adb.setMessage("You will not be able to change, are you sure you want to continue?");
    adb.setIcon(this.getResources().getDrawable(R.drawable.ic_black_alert_two));
    adb.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int which) { 
            Intent intent = new Intent(AlterQuotes.this, CardMaker.class);
            intent.putExtra("bitmapPath",fileImagePath.toString());
            startActivity(intent);
        }
    });
    adb.show();
} catch (IOException e) {
    e.printStackTrace();
  }

提前致谢..

Answer 1

透明背景通常会导致背景在转换为位图时变黑，尝试将背景框架TextView的背景颜色设置为有点像白色，然后尝试将其转换为位图。

Answer 2

尝试从TextView创建位图，目前您正在将RelativeLayout转换为位图...

在将textview转换为位图时解决黑屏

2 个答案: