Android ScrollView sv大于其rootView,调用sv.getDrawingCache()会导致崩溃吗?
以下是我的简单布局:Android ScrollView sv大于其rootView,调用sv.getDrawingCache()会导致崩溃吗?,android,Android,以下是我的简单布局: <?xml version="1.0" encoding="utf-8"?> <ScrollView xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="wrap_content" > <LinearLayout android:layout
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<TextView
android:id="@+id/my_long_textview"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/long_text_str" />
<Button
android:id="@+id/capture_screen"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:onClick="captureScreen"
android:text="Capture Screen" />
</LinearLayout>
</ScrollView>
这段代码可以工作,但我非常喜欢捕获整个TextView:
View rv = v.getRootView();
rv.setDrawingCacheEnabled(true);
bitmap = Bitmap.createBitmap(rv.getDrawingCache());
rv.setDrawingCacheEnabled(false);
堆栈跟踪如下所示:
04-21 00:17:08.023: E/AndroidRuntime(27472): java.lang.IllegalStateException: Could not execute method of the activity
04-21 00:17:08.023: E/AndroidRuntime(27472): at android.view.View$1.onClick(View.java:2072)
04-21 00:17:08.023: E/AndroidRuntime(27472): at android.view.View.performClick(View.java:2408)
04-21 00:17:08.023: E/AndroidRuntime(27472): at android.view.View$PerformClick.run(View.java:8816)
04-21 00:17:08.023: E/AndroidRuntime(27472): at android.os.Handler.handleCallback(Handler.java:587)
04-21 00:17:08.023: E/AndroidRuntime(27472): at android.os.Handler.dispatchMessage(Handler.java:92)
04-21 00:17:08.023: E/AndroidRuntime(27472): at android.os.Looper.loop(Looper.java:123)
04-21 00:17:08.023: E/AndroidRuntime(27472): at android.app.ActivityThread.main(ActivityThread.java:4627)
04-21 00:17:08.023: E/AndroidRuntime(27472): at java.lang.reflect.Method.invokeNative(Native Method)
04-21 00:17:08.023: E/AndroidRuntime(27472): at java.lang.reflect.Method.invoke(Method.java:521)
04-21 00:17:08.023: E/AndroidRuntime(27472): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
04-21 00:17:08.023: E/AndroidRuntime(27472): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
04-21 00:17:08.023: E/AndroidRuntime(27472): at dalvik.system.NativeStart.main(Native Method)
04-21 00:17:08.023: E/AndroidRuntime(27472): Caused by: java.lang.reflect.InvocationTargetException
04-21 00:17:08.023: E/AndroidRuntime(27472): at com.gtgg.ui.TextViewAct.captureScreen(TextViewAct.java:31)
04-21 00:17:08.023: E/AndroidRuntime(27472): at java.lang.reflect.Method.invokeNative(Native Method)
04-21 00:17:08.023: E/AndroidRuntime(27472): at java.lang.reflect.Method.invoke(Method.java:521)
04-21 00:17:08.023: E/AndroidRuntime(27472): at android.view.View$1.onClick(View.java:2067)
04-21 00:17:08.023: E/AndroidRuntime(27472): ... 11 more
04-21 00:17:08.023: E/AndroidRuntime(27472): Caused by: java.lang.NullPointerException
04-21 00:17:08.023: E/AndroidRuntime(27472): at android.graphics.Bitmap.createBitmap(Bitmap.java:358)
04-21 00:17:08.023: E/AndroidRuntime(27472): ... 15 more
有没有办法将大文本视图保存到位图中,即使它比根视图大
非常感谢 崩溃应用程序?你能把stacktrace贴出来吗?
04-21 00:17:08.023: E/AndroidRuntime(27472): java.lang.IllegalStateException: Could not execute method of the activity
04-21 00:17:08.023: E/AndroidRuntime(27472): at android.view.View$1.onClick(View.java:2072)
04-21 00:17:08.023: E/AndroidRuntime(27472): at android.view.View.performClick(View.java:2408)
04-21 00:17:08.023: E/AndroidRuntime(27472): at android.view.View$PerformClick.run(View.java:8816)
04-21 00:17:08.023: E/AndroidRuntime(27472): at android.os.Handler.handleCallback(Handler.java:587)
04-21 00:17:08.023: E/AndroidRuntime(27472): at android.os.Handler.dispatchMessage(Handler.java:92)
04-21 00:17:08.023: E/AndroidRuntime(27472): at android.os.Looper.loop(Looper.java:123)
04-21 00:17:08.023: E/AndroidRuntime(27472): at android.app.ActivityThread.main(ActivityThread.java:4627)
04-21 00:17:08.023: E/AndroidRuntime(27472): at java.lang.reflect.Method.invokeNative(Native Method)
04-21 00:17:08.023: E/AndroidRuntime(27472): at java.lang.reflect.Method.invoke(Method.java:521)
04-21 00:17:08.023: E/AndroidRuntime(27472): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
04-21 00:17:08.023: E/AndroidRuntime(27472): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
04-21 00:17:08.023: E/AndroidRuntime(27472): at dalvik.system.NativeStart.main(Native Method)
04-21 00:17:08.023: E/AndroidRuntime(27472): Caused by: java.lang.reflect.InvocationTargetException
04-21 00:17:08.023: E/AndroidRuntime(27472): at com.gtgg.ui.TextViewAct.captureScreen(TextViewAct.java:31)
04-21 00:17:08.023: E/AndroidRuntime(27472): at java.lang.reflect.Method.invokeNative(Native Method)
04-21 00:17:08.023: E/AndroidRuntime(27472): at java.lang.reflect.Method.invoke(Method.java:521)
04-21 00:17:08.023: E/AndroidRuntime(27472): at android.view.View$1.onClick(View.java:2067)
04-21 00:17:08.023: E/AndroidRuntime(27472): ... 11 more
04-21 00:17:08.023: E/AndroidRuntime(27472): Caused by: java.lang.NullPointerException
04-21 00:17:08.023: E/AndroidRuntime(27472): at android.graphics.Bitmap.createBitmap(Bitmap.java:358)
04-21 00:17:08.023: E/AndroidRuntime(27472): ... 15 more