【移动应用开发技术】如何解决android软键盘挡住输入框方法

【移动应用开发技术】如何解决android软键盘挡住输入框方法

方法一：非透明状态栏下使用adjustResize和adjustPan，或是透明状态栏下使用fitsSystemWindows=true属性/upload/information/20200623/125/123905.png/upload/information/20200623/125/123906.png1､adjustPan/upload/information/20200623/125/123907.png2､adjustResize/upload/information/20200623/125/123908.png方法二：在界面最外层布局包裹ScrollView/upload/information/20200623/125/123909.png/upload/information/20200623/125/123910.png

<activity

android:name=".TestInputActivity"

android:windowSoftInputMode="adjustPan">/upload/information/20200623/125/123911.png/upload/information/20200623/125/123912.png

<activity

android:name=".TestInputActivity"

android:windowSoftInputMode="adjustResize">/upload/information/20200623/125/123913.png/upload/information/20200623/125/123914.png沉浸式状态栏／透明状态栏情况下方法三：使用scrollTo方法，当键盘弹起时，让界面整体上移；键盘收起，让界面整体下移<RelativeLayout

xmlns:android="/apk/res/android"

xmlns:tools="/tools"

android:layout_width="match_parent"

android:layout_height="match_parent"

android:id="@+id/main"

tools:context="com.example.liubin1.softkeyboardhelper.MainActivity">

<EditText

android:id="@+id/name"

android:hint="请输入用户名："

android:layout_centerInParent="true"

android:layout_width="match_parent"

android:layout_height="50dp"

/>

<EditText

android:id="@+id/pas"

android:layout_below="@id/name"

android:hint="请输入密码："

android:layout_centerInParent="true"

android:layout_width="match_parent"

android:layout_height="50dp"

/>

<Button

android:id="@+id/login_btn"

android:layout_below="@id/rpas"

android:layout_centerHorizontal="true"

android:text="登录"

android:layout_width="180dp"

android:layout_height="50dp"

/>

</RelativeLayout>RelativeLayout

main

=

(RelativeLayout)

findViewById(R.id.main);Button

login_btn

=

(Button)

findViewById(R.id.login_btn);//在Activity的onCreate里添加如下方法addLayoutListener(main,login_btn);/**

*

addLayoutListener方法如下

*

@param

main

根布局

*

@param

scroll

需要显示的最下方View

*/

public

void

addLayoutListener(final

View

main,

final

View

scroll)

{

main.getViewTreeObserver().addOnGlobalLayoutListener(new

ViewTreeObserver.OnGlobalLayoutListener()

{

@Override

public

void

onGlobalLayout()

{

Rect

rect

=

new

Rect();

//1、获取main在窗体的可视区域

main.getWindowVisibleDisplayFrame(rect);

//2、获取main在窗体的不可视区域高度，在键盘没有弹起时，main.getRootView().getHeight()调节度应该和rect.bottom高度一样

int

mainInvisibleHeight

=

main.getRootView().getHeight()

-

rect.bottom;

int

screenHeight

=

main.getRootView().getHeight();//屏幕高度

//3、不可见区域大于屏幕本身高度的1/4：说明键盘弹起了

if

(mainInvisibleHeight

>

screenHeight

/

4)

{

int[]

location

=

new

int[2];

scroll.getLocationInWindow(location);

//

4､获取Scroll的窗体坐标，算出main需要滚动的高度

int

srollHeight

=

(location[1]

+

scroll.getHeight())

-

rect.bottom;

//5､让界面整体上移键盘的高度

main.scrollTo(0,

srollHeight);

}

else

{

//3、不可见区域小于屏幕高度1/4时,说明键盘隐藏了，把界面下移，移回到原有高度

main.scrollTo(0,

0);

}

}

});

}

}/upload/information/20200623/125/123915.gif方法四：适配键盘高度变化情况，当键盘弹起时，让界面整体上移；键盘收起，让界面整体下移public

class

KeyboardLayout

extends

FrameLayout

{

private

KeyboardLayoutListener

mListener;

private

boolean

mIsKeyboardActive

=

false;

//输入法是否激活

private

int

mKeyboardHeight

=

0;

//

输入法高度

public

KeyboardLayout(Context

context)

{

this(context,

null,

0);

}

public

KeyboardLayout(Context

context,

AttributeSet

attrs)

{

this(context,

attrs,

0);

}

public

KeyboardLayout(Context

context,

AttributeSet

attrs,

int

defStyleAttr)

{

super(context,

attrs,

defStyleAttr);

//

监听布局变化

getViewTreeObserver().addOnGlobalLayoutListener(new

KeyboardOnGlobalChangeListener());

}

public

void

setKeyboardListener(KeyboardLayoutListener

listener)

{

mListener

=

listener;

}

public

KeyboardLayoutListener

getKeyboardListener()

{

return

mListener;

}

public

boolean

isKeyboardActive()

{

return

mIsKeyboardActive;

}

/**

*

获取输入法高度

*

*

@return

*/

public

int

getKeyboardHeight()

{

return

mKeyboardHeight;

}

public

interface

KeyboardLayoutListener

{

/**

*

@param

isActive

输入法是否激活

*

@param

keyboardHeight

输入法面板高度

*/

void

onKeyboardStateChanged(boolean

isActive,

int

keyboardHeight);

}

private

class

KeyboardOnGlobalChangeListener

implements

ViewTreeObserver.OnGlobalLayoutListener

{

int

mScreenHeight

=

0;

private

int

getScreenHeight()

{

if

(mScreenHeight

>

0)

{

return

mScreenHeight;

}

mScreenHeight

=

((WindowManager)

getContext().getSystemService(Context.WINDOW_SERVICE))

.getDefaultDisplay().getHeight();

return

mScreenHeight;

}

@Override

public

void

onGlobalLayout()

{

Rect

rect

=

new

Rect();

//

获取当前页面窗口的显示范围

((Activity)

getContext()).getWindow().getDecorView().getWindowVisibleDisplayFrame(rect);

int

screenHeight

=

getScreenHeight();

int

keyboardHeight

=

screenHeight

-

rect.bottom;

//

输入法的高度

boolean

isActive

=

false;

if

(Math.abs(keyboardHeight)

>

screenHeight

/

4)

{

isActive

=

true;

//

超过屏幕五分之一则表示弹出了输入法

mKeyboardHeight

=

keyboardHeight;

}

mIsKeyboardActive

=

isActive;

if

(mListener

!=

null)

{

mListener.onKeyboardStateChanged(isActive,

keyboardHeight);

}

}

}

}public

class

KeyboardLayout

extends

FrameLayout

{

private

KeyboardLayoutListener

mListener;

private

boolean

mIsKeyboardActive

=

false;

//输入法是否激活

private

int

mKeyboardHeight

=

0;

//

输入法高度

public

KeyboardLayout(Context

context)

{

this(context,

null,

0);

}

public

KeyboardLayout(Context

context,

AttributeSet

attrs)

{

this(context,

attrs,

0);

}

public

KeyboardLayout(Context

context,

AttributeSet

attrs,

int

defStyleAttr)

{

super(context,

attrs,

defStyleAttr);

//

监听布局变化

getViewTreeObserver().addOnGlobalLayoutListener(new

KeyboardOnGlobalChangeListener());

}

public

void

setKeyboardListener(KeyboardLayoutListener

listener)

{

mListener

=

listener;

}

public

KeyboardLayoutListener

getKeyboardListener()

{

return

mListener;

}

public

boolean

isKeyboardActive()

{

return

mIsKeyboardActive;

}

/**

*

获取输入法高度

*

*

@return

*/

public

int

getKeyboardHeight()

{

return

mKeyboardHeight;

}

public

interface

KeyboardLayoutListener

{

/**

*

@param

isActive

输入法是否激活

*

@param

keyboardHeight

输入法面板高度

*/

void

onKeyboardStateChanged(boolean

isActive,

int

keyboardHeight);

}

private

class

KeyboardOnGlobalChangeListener

implements

ViewTreeObserver.OnGlobalLayoutListener

{

int

mScreenHeight

=

0;

private

int

getScreenHeight()

{

if

(mScreenHeight

>

0)

{

return

mScreenHeight;

}

mScreenHeight

=

((WindowManager)

getContext().getSystemService(Context.WINDOW_SERVICE))

.getDefaultDisplay().getHeight();

return

mScreenHeight;

}

@Override

public

void

onGlobalLayout()

{

Rect

rect

=

new

Rect();

//

获取当前页面窗口的显示范围

((Activity)

getContext()).getWindow().getDecorView().getWindowVisibleDisplayFrame(rect);

int

screenHeight

=

getScreenHeight();

int

keyboardHeight

=

screenHeight

-

rect.bottom;

//

输入法的高度

boolean

isActive

=

false;

if

(Math.abs(keyboardHeight)

>

screenHeight

/

4)

{

isActive

=

true;

//

超过屏幕五分之一则表示弹出了输入法

mKeyboardHeight

=

keyboardHeight;

}

mIsKeyboardActive

=

isActive;

if

(mListener

!=

null)

{

mListener.onKeyboardStateChanged(isActive,

keyboardHeight);

}

}

}

}

/**

*

监听键盘状态，布局有变化时，靠scrollView去滚动界面

*/

public

void

addLayoutListener()

{

bindingView.mainLl.setKeyboardListener(new

KeyboardLayout.KeyboardLayoutListener()

{

@Override

public

void

onKeyboardStateChanged(boolean

isActive,

int

keyboardHeight)

{

Log.e("onKeyboardStateChanged",

"isActive:"

+

isActive

+

"

keyboardHeight:"

+

keyboardHeight);

if

(isActive)

{

scrollToBottom();

}

}

});

}

/**

*

弹出软键盘时将SVContainer滑到底

*/

private

void

scrollToBottom()

{

bindingView.loginLl.postDelayed(new

Runnable()

{

@Override

public

void

run()

{

bindingView.loginLl.smoothScrollTo(0,

bindingView.loginLl.getBottom()

+

SoftKeyInputHidWidget.getStatusBarHeight(LoginActivityForDiffkeyboardHeight.this));

}

},

100);

}/upload/information/20200623/125/123916.gif方法五：监听Activity顶层View，判断软键盘是否弹起，对界面重新绘制/**

*

解决键盘档住输入框

*

Created

by

SmileXie

on

2017/4/3.

*/public

class

SoftHideKeyBoardUtil

{

public

static

void

assistActivity

(Activity

activity)

{

new

SoftHideKeyBoardUtil(activity);

}

private

View

mChildOfContent;

private

int

usableHeightPrevious;

private

FrameLayout.LayoutParams

frameLayoutParams;

//为适应华为小米等手机键盘上方出现黑条或不适配

private

int

contentHeight;//获取setContentView本来view的高度

private

boolean

isfirst

=

true;//只用获取一次

private

int

statusBarHeight;//状态栏高度

private

SoftHideKeyBoardUtil(Activity

activity)

{

//1､找到Activity的最外层布局控件，它其实是一个DecorView,它所用的控件就是FrameLayout

FrameLayout

content

=

(FrameLayout)

activity.findViewById(android.R.id.content);

//2､获取到setContentView放进去的View

mChildOfContent

=

content.getChildAt(0);

//3､给Activity的xml布局设置View树监听，当布局有变化，如键盘弹出或收起时，都会回调此监听

mChildOfContent.getViewTreeObserver().addOnGlobalLayoutListener(new

ViewTreeObserver.OnGlobalLayoutListener()

{

//4､软键盘弹起会使GlobalLayout发生变化

public

void

onGlobalLayout()

{

if

(isfirst)

{

contentHeight

=

mChildOfContent.getHeight();//兼容华为等机型

isfirst

=

false;

}

//5､当前布局发生变化时，对Activity的xml布局进行重绘

possiblyResizeChildOfContent();

}

});

//6､获取到Activity的xml布局的放置参数

frameLayoutParams

=

(FrameLayout.LayoutParams)

mChildOfContent.getLayoutParams();

}

//

获取界面可用高度，如果软键盘弹起后，Activity的xml布局可用高度需要减去键盘高度

private

void

possiblyResizeChildOfContent()

{

//1､获取当前界面可用高度，键盘弹起后，当前界面可用布局会减少键盘的高度

int

usableHeightNow

=

computeUsableHeight();

//2､如果当前可用高度和原始值不一样

if

(usableHeightNow

!=

usableHeightPrevious)

{

//3､获取Activity中xml中布局在当前界面显示的高度

int

usableHeightSansKeyboard

=

mChildOfContent.getRootView().getHeight();

//4､Activity中xml布局的高度-当前可用高度

int

heightDifference

=

usableHeightSansKeyboard

-

usableHeightNow;

//5､高度差大于屏幕1/4时，说明键盘弹出

if

(heightDifference

>

(usableHeightSansKeyboard/4))

{

//

6､键盘弹出了，Activity的xml布局高度应当减去键盘高度

if

(Bu