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首页 / 移动开发 / Android / Android软键盘状态弹出与消失的示例

最近遇到了关于软键盘的问题,需要获取到软键盘的状态,是否在显示 ,记录一下,方便以后查阅。网上常见的判定状态方法

复制代码 代码如下:
getWindow().getAttributes().softInputMode== WindowManager.LayoutParams.SOFT_INPUT_STATE_UNSPECIFIED 

来判断软键盘是否打开,若相等则为打开。试了之后,发现这个只对手机自带的键盘有作用,对安装的第三方的输入法没有效果。

还有介绍使用InputMethodManager 来获取键盘状态,代码如下

 InputMethodManager imm = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE); boolean isOpen=imm.isActive();//isOpen若返回true,则表示输入法打开
这种并不能实时获取到键盘的状态,对我依然没有效果。

后来找到的解决方法,监听屏幕的变化,代码如下:

import android.app.Activity;import android.content.Context;import android.graphics.Rect;import android.os.Build;import android.util.Log;import android.util.TypedValue;import android.view.View;import android.view.ViewGroup;import android.view.ViewTreeObserver;/** ** 软键盘的监听 */public class KeyBoardShowListener {private Context ctx;public KeyBoardShowListener(Context ctx) {this.ctx = ctx;}OnKeyboardVisibilityListener keyboardListener;public OnKeyboardVisibilityListener getKeyboardListener() {return keyboardListener;}public interface OnKeyboardVisibilityListener {void onVisibilityChanged(boolean visible);}public void setKeyboardListener(final OnKeyboardVisibilityListener listener, Activity activity) {final View activityRootView = ((ViewGroup) activity.findViewById(android.R.id.content)).getChildAt(0);activityRootView.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {private boolean wasOpened;private final int DefaultKeyboardDP = 100;// From @nathanielwolf answer... Lollipop includes button bar in the root. Add height of button bar (48dp) to maxDiffprivate final int EstimatedKeyboardDP = DefaultKeyboardDP + (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP ? 48 : 0);private final Rect r = new Rect();@Overridepublic void onGlobalLayout() {// Convert the dp to pixels.int estimatedKeyboardHeight = (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, EstimatedKeyboardDP, activityRootView.getResources().getDisplayMetrics());// Conclude whether the keyboard is shown or not.activityRootView.getWindowVisibleDisplayFrame(r);int heightDiff = activityRootView.getRootView().getHeight() - (r.bottom - r.top);boolean isShown = heightDiff >= estimatedKeyboardHeight;if (isShown == wasOpened) {Log.e("Keyboard state", "Ignoring global layout change...");return;}wasOpened = isShown;listener.onVisibilityChanged(isShown);}});}}
用法如下:

//监听软键盘的状态new KeyBoardShowListener(Activity.this).setKeyboardListener(new KeyBoardShowListener.OnKeyboardVisibilityListener() {@Overridepublic void onVisibilityChanged(boolean visible) {if (visible) {//软键盘已弹出} else {//软键盘未弹出}}}, Activity.this);
以下是可能会遇到的一些情况:
绑定软键盘到EditText

edit.setFocusable(true);edit.setFocusableInTouchMode(true);edit.requestFocus();InputMethodManager inputManager = (InputMethodManager)edit.getContext().getSystemService(Context.INPUT_METHOD_SERVICE);inputManager.showSoftInput(edit, 0);
去除软键盘显示:

editMsgView.setText("");editMsgView.clearFocus();//close InputMethodManagerInputMethodManager imm = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);imm.hideSoftInputFromWindow(editMsgView.getWindowToken(), 0);
始终不弹出软件键盘

复制代码 代码如下:
EditText edit=(EditText)findViewById(R.id.edit); edit.setInputType(InputType.TYPE_NULL);

也可以:

InputMethodManager imm = (InputMethodManager)v.getContext().getSystemService(Context.INPUT_METHOD_SERVICE);if(imm.isActive()){ //这里可以判断也可以不判断imm.hideSoftInputFromWindow(v.getApplicationWindowToken(), 0 );}
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持脚本之家。