我有一个包含如下视图的布局:
<LinearLayout>
<TextView...>
<TextView...>
<ImageView ...>
<EditText...>
<Button...>
</linearLayout>
如何以编程方式在我的EditText上设置焦点(显示键盘)?
我已经尝试过了，它只在我正常启动我的活动时才起作用，但当我在TabHost中启动它时，它不起作用。
txtSearch.setFocusableInTouchMode(true);
txtSearch.setFocusable(true);
txtSearch.requestFocus();
当前回答
我尝试了大卫·梅里曼(David Merriman)的最上面的答案，它也不适合我。但我发现建议运行这段代码延迟在这里，它的工作就像一个魅力。
val editText = view.findViewById<View>(R.id.settings_input_text)
editText.postDelayed({
editText.requestFocus()
val imm = context.getSystemService(INPUT_METHOD_SERVICE) as? InputMethodManager
imm?.showSoftInput(editText, InputMethodManager.SHOW_IMPLICIT)
}, 100)
其他回答
这对我很有效， 多亏了ungalcrys
显示键盘:
editText = (EditText)findViewById(R.id.myTextViewId);
editText.requestFocus();
InputMethodManager imm = (InputMethodManager)getSystemService(this.INPUT_METHOD_SERVICE);
imm.toggleSoftInput(InputMethodManager.SHOW_FORCED,InputMethodManager.HIDE_IMPLICIT_ONLY);
隐藏键盘:
InputMethodManager imm = (InputMethodManager) getSystemService(this.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(editText.getWindowToken(), 0);
在“OnCreate”中将光标移动到输入字段，但键盘不会打开:
window().setSoftInputMode(
WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN
)
editText.requestFocus()
之后，当用户输入文本时:
val imm = editText.context.getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager
window.setSoftInputMode(
WindowManager.LayoutParams.SOFT_INPUT_STATE_VISIBLE
)
imm.showSoftInput(editText, 0)
将充分工作，键盘将在需要时打开，而不设置时间延迟。 记住，输入文本后，你必须:
window.setSoftInputMode(
WindowManager.LayoutParams.SOFT_INPUT_STATE_HIDDEN
)
requestFocus()
这里是KeyboardHelper类，用于隐藏和显示键盘
import android.content.Context;
import android.view.View;
import android.view.inputmethod.InputMethodManager;
import android.widget.EditText;
/**
* Created by khanhamza on 06-Mar-17.
*/
public class KeyboardHelper {
public static void hideSoftKeyboard(final Context context, final View view) {
if (context == null) {
return;
}
view.requestFocus();
view.postDelayed(new Runnable() {
@Override
public void run() {
InputMethodManager imm = (InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE);
assert imm != null;
imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
}
}, 1000);
}
public static void hideSoftKeyboard(final Context context, final EditText editText) {
editText.requestFocus();
editText.postDelayed(new Runnable() {
@Override
public void run() {
InputMethodManager imm = (InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE);
assert imm != null;
imm.hideSoftInputFromWindow(editText.getWindowToken(), 0);
}
}, 1000);
}
public static void openSoftKeyboard(final Context context, final EditText editText) {
editText.requestFocus();
editText.postDelayed(new Runnable() {
@Override
public void run() {
InputMethodManager imm = (InputMethodManager) context.getSystemService(Context.INPUT_METHOD_SERVICE);
assert imm != null;
imm.showSoftInput(editText, InputMethodManager.SHOW_IMPLICIT);
}
}, 1000);
}
}
editTxt.setOnFocusChangeListener { v, hasFocus ->
val imm = getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager
if (hasFocus) {
imm.toggleSoftInput(InputMethodManager.SHOW_FORCED, InputMethodManager.HIDE_IMPLICIT_ONLY)
} else {
imm.hideSoftInputFromWindow(v.windowToken, 0)
}
}
我只用了一行代码
firstInputField.setNextFocusDownId(R.id.id_of_next_targeted_text_field);
