设置textCursorDrawable编程 [英] set textCursorDrawable programatically

问题描述

如果我添加的EditText 在XML中我可以设置 textCursorDrawable =@空：

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" />

现在我得出一个的EditText Java编写的。我想设置机器人：textCursorDrawable =@空

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 ?                                

如何设置呢？

How do set it?

推荐答案

有没有公共API设置光标绘制。您可以通过使用反射编程设定。字段 mCursorDrawableRes 并没有改变，所以这应该在所有的设备，除非制造商改变了一些东西，或者是后来改。

There is no public API to set the cursor drawable. You can set it programmatically by using reflection. The field mCursorDrawableRes hasn't changed so this should work on all devices, unless a manufacturer changed something or it is later changed.

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) {
}

定义游标可绘制在您的应用程序：

Define a cursor drawable in your app:

<?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>

---

另一种方法：

您还可以设置光标颜色与下面的方法：

---

Another approach:

You can also set the cursor color with the following method:

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) {
    } 
} 

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