Android优雅的方式解决软键盘遮挡按钮问题

<ScrollViewandroid:id="@+id/scrollview"android:layout_width="match_parent"android:layout_height="wrap_content"android:fadingEdge="none"android:scrollbars="none"><LinearLayoutandroid:layout_width="match_parent"android:layout_height="wrap_content"android:orientation="vertical"><ImageViewandroid:layout_width="100dp"android:layout_height="100dp"android:layout_gravity="center_horizontal"android:layout_marginTop="20dp"android:src="@mipmap/ic_loginhead"/><EditTextandroid:id="@+id/et_usernamelogin_username"style="@style/customEditText"android:layout_width="match_parent"android:layout_height="40dp"android:layout_marginTop="10dp"android:background="@null"android:hint="请输入已验证手机"android:inputType="number"android:lines="1"android:maxLength="11"/><ImageViewandroid:layout_width="match_parent"android:layout_height="2px"android:layout_marginLeft="50dp"android:layout_marginRight="50dp"android:background="@color/pating_line"/><EditTextandroid:id="@+id/et_usernamelogin_password"style="@style/customEditText"android:layout_width="match_parent"android:layout_height="40dp"android:layout_marginTop="20dp"android:background="@null"android:digits="0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_?"android:hint="请输入密码"android:inputType="textPassword"/><ImageViewandroid:layout_width="match_parent"android:layout_height="2px"android:layout_marginLeft="50dp"android:layout_marginRight="50dp"android:background="@color/pating_line"/><Buttonandroid:id="@+id/btn_usernamelogin_dologin"android:layout_width="match_parent"android:layout_height="wrap_content"android:layout_gravity="center_horizontal"android:layout_marginLeft="50dp"android:layout_marginRight="50dp"android:layout_marginTop="30dp"android:background="@drawable/btn_selecter"android:enabled="false"android:text="登录"android:textColor="@color/white"/></LinearLayout></ScrollView>

mScrollView=(ScrollView)view.findViewById(R.id.scrollview);usernamelogin_username.setOnTouchListener(newView.OnTouchListener(){@OverridepublicbooleanonTouch(Viewv,MotionEventevent){changeScrollView();returnfalse;}});usernamelogin_password.setOnTouchListener(newView.OnTouchListener(){@OverridepublicbooleanonTouch(Viewv,MotionEventevent){changeScrollView();returnfalse;}});

 /** *使ScrollView指向底部 */ privatevoidchangeScrollView(){ newHandler().postDelayed(newRunnable(){ @Override publicvoidrun(){ mScrollView.scrollTo(0,mScrollView.getHeight()); } },300); }

<?xml version="1.0" encoding="utf-8"?><scale xmlns:android="http://schemas.android.com/apk/res/android"   android:fromXScale="1.0"  android:toXScale="0.0"  android:fromYScale="1.0"  android:toYScale="0.0"  android:pivotX="50%"  android:pivotY="50%"  android:duration="500"  android:repeatCount="0"/>

<?xml version="1.0" encoding="utf-8"?> <scale xmlns:android="http://schemas.android.com/apk/res/android"  android:fromXScale="0.0"  android:toXScale="1.0"  android:fromYScale="0.0"  android:toYScale="1.0"  android:pivotX="50%"  android:pivotY="50%"  android:duration="500"  android:repeatCount="0"/>

importandroid.os.Bundle;importandroid.os.Handler;importandroid.support.v7.app.AppCompatActivity;importandroid.view.KeyEvent;importandroid.view.MotionEvent;importandroid.view.View;importandroid.view.animation.Animation;importandroid.view.animation.AnimationSet;importandroid.view.animation.ScaleAnimation;importandroid.widget.Button;importandroid.widget.EditText;importandroid.widget.ImageView;publicclassMainActivityextendsAppCompatActivity{privateImageViewmHead;//头部ImageView@OverrideprotectedvoidonCreate(BundlesavedInstanceState){super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);mHead=(ImageView)findViewById(R.id.iv_head);finalButtonbtn=(Button)findViewById(R.id.btn_usernamelogin_dologin);finalEditTextet_pass=(EditText)findViewById(R.id.et_usernamelogin_password);finalEditTextet_name=(EditText)findViewById(R.id.et_usernamelogin_username);/***当输入被点击*/et_name.setOnTouchListener(newView.OnTouchListener(){@OverridepublicbooleanonTouch(Viewv,MotionEventevent){start();returnfalse;}});btn.setEnabled(false);btn.setOnClickListener(newView.OnClickListener(){@OverridepublicvoidonClick(Viewv){}});}privatevoidstart(){AnimationSetanimationSet=newAnimationSet(true);ScaleAnimationscaleAnimation=newScaleAnimation(1,0.1f,1,0.1f,Animation.RELATIVE_TO_SELF,0.5f,Animation.RELATIVE_TO_SELF,0.5f);scaleAnimation.setDuration(500);animationSet.addAnimation(scaleAnimation);animationSet.setFillAfter(true);animationSet.setFillBefore(false);animationSet.setRepeatCount(0);//设置重复次数mHead.startAnimation(scaleAnimation);newHandler().postDelayed(newRunnable(){@Overridepublicvoidrun(){mHead.setVisibility(View.GONE);}},500);}/***菜单、返回键响应*/@OverridepublicbooleanonKeyDown(intkeyCode,KeyEventevent){//TODOAuto-generatedmethodstubif(keyCode==KeyEvent.KEYCODE_BACK){if(mHead.getVisibility()==View.GONE){AnimationSetanimationSet=newAnimationSet(true);ScaleAnimationscaleAnimation=newScaleAnimation(0.1f,1f,0.1f,1f,Animation.RELATIVE_TO_SELF,0.5f,Animation.RELATIVE_TO_SELF,0.5f);scaleAnimation.setDuration(500);animationSet.addAnimation(scaleAnimation);animationSet.setFillAfter(true);animationSet.setFillBefore(false);mHead.startAnimation(scaleAnimation);mHead.setVisibility(View.VISIBLE);}else{finish();}}returnfalse; }}