以编程方式设置 textCursorDrawable

set textCursorDrawable programmatically(以编程方式设置 textCursorDrawable)

问题描述

如果我在 XML 中添加 EditText 我可以设置 textCursorDrawable="@null":

现在我用 Java 绘制一个 EditText.我想设置 android:textCursorDrawable="@null".

LinearLayout.LayoutParams paramtext = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.FILL_PARENT,线性布局.LayoutParams.WRAP_CONTENT);EditText txtOther = new EditText(this);txtOther.setLayoutParams(paramtext);txtOther.setBackgroundColor(Color.WHITE);txtOther.setTextColor(Color.BLACK);txtOther.setId(99999);//txtOther.setCursorDrawable ?

如何设置?

2019 年更新:没有设置可绘制光标的公共 API. 参见 https://stackoverflow.com/a/57555148/253468 适用于 29 及更高版本的 API，在此之前，您需要有条件地使用反射，如下所述.p>

在 API 29 之前，您可以使用反射以编程方式设置它.mCursorDrawableRes 字段没有更改，因此这应该适用于所有设备，除非制造商更改了某些内容或稍后更改.

使用反射设置光标:

EditText yourEditText = new EditText(context);...尝试 {//https://github.com/android/platform_frameworks_base/blob/kitkat-release/core/java/android/widget/TextView.java#L562-564字段 f = TextView.class.getDeclaredField(mCursorDrawableRes");f.setAccessible(true);f.set(yourEditText, R.drawable.cursor);} 捕捉(忽略异常){}

在你的应用中定义一个可绘制的光标:

另一种方法:

您也可以通过以下方法设置光标颜色:

public static void setCursorDrawableColor(EditText editText, int color) {尝试 {字段 fCursorDrawableRes = TextView.class.getDeclaredField("mCursorDrawableRes");fCursorDrawableRes.setAccessible(true);int mCursorDrawableRes = fCursorDrawableRes.getInt(editText);字段 fEditor = TextView.class.getDeclaredField("mEditor");fEditor.setAccessible(true);对象编辑器 = fEditor.get(editText);类<?>clazz = editor.getClass();字段 fCursorDrawable = clazz.getDeclaredField("mCursorDrawable");fCursorDrawable.setAccessible(true);可绘制 [] 可绘制 = 新的可绘制 [2];drawables[0] = editText.getContext().getResources().getDrawable(mCursorDrawableRes);drawables[1] = editText.getContext().getResources().getDrawable(mCursorDrawableRes);drawables[0].setColorFilter(color, PorterDuff.Mode.SRC_IN);drawables[1].setColorFilter(color, PorterDuff.Mode.SRC_IN);fCursorDrawable.set(编辑器，drawables)；} catch (Throwable 被忽略) {}}

If I add an EditText in XML I can set textCursorDrawable="@null":

<EditText
    android:id="@+id/txtE3Casecode4"
    android:layout_width="30dp"
    android:layout_height="wrap_content"
    android:layout_alignParentTop="true"
    android:background="#C7C7C5"
    android:textCursorDrawable="@null"
    android:ems="10"
    android:inputType="number"
    android:maxLength="2"
    android:text="01"
    android:textColor="#000000" />

Now I draw an EditText in Java. I want set android:textCursorDrawable="@null".

LinearLayout.LayoutParams paramtext = new LinearLayout.LayoutParams(
    LinearLayout.LayoutParams.FILL_PARENT,
    LinearLayout.LayoutParams.WRAP_CONTENT);
EditText txtOther = new EditText(this);
txtOther.setLayoutParams(paramtext);
txtOther.setBackgroundColor(Color.WHITE);
txtOther.setTextColor(Color.BLACK);
txtOther.setId(99999);
// txtOther.setCursorDrawable ?                                

How do set it?

Update 2019: There is no public API to set the cursor drawable. See https://stackoverflow.com/a/57555148/253468 for API available on 29 and above, before that conditionally you'll need to use reflection as described below.

EditText yourEditText = new EditText(context);

...

try {
    // https://github.com/android/platform_frameworks_base/blob/kitkat-release/core/java/android/widget/TextView.java#L562-564
    Field f = TextView.class.getDeclaredField("mCursorDrawableRes");
    f.setAccessible(true);
    f.set(yourEditText, R.drawable.cursor);
} catch (Exception ignored) {
}

<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android"
    android:shape="rectangle" >
    
    <solid android:color="#ff000000" />
    
    <size android:width="1dp" />
    
</shape>

public static void setCursorDrawableColor(EditText editText, int color) {
    try { 
        Field fCursorDrawableRes = TextView.class.getDeclaredField("mCursorDrawableRes");
        fCursorDrawableRes.setAccessible(true);
        int mCursorDrawableRes = fCursorDrawableRes.getInt(editText);
        Field fEditor = TextView.class.getDeclaredField("mEditor");
        fEditor.setAccessible(true);
        Object editor = fEditor.get(editText);
        Class<?> clazz = editor.getClass();
        Field fCursorDrawable = clazz.getDeclaredField("mCursorDrawable");
        fCursorDrawable.setAccessible(true);
        Drawable[] drawables = new Drawable[2];
        drawables[0] = editText.getContext().getResources().getDrawable(mCursorDrawableRes);
        drawables[1] = editText.getContext().getResources().getDrawable(mCursorDrawableRes);
        drawables[0].setColorFilter(color, PorterDuff.Mode.SRC_IN);
        drawables[1].setColorFilter(color, PorterDuff.Mode.SRC_IN);
        fCursorDrawable.set(editor, drawables);
    } catch (Throwable ignored) {
    } 
}