在最近的兩個(gè)項(xiàng)目中，項(xiàng)目需求要求我們實(shí)現(xiàn) /*登陸頁(yè)面的內(nèi)容能夠隨著鍵盤的彈出而被頂上去，避免鍵盤遮擋住登陸按鈕*/ 這樣的效果，寶寶心里苦呀，本來半天搞定的事還非得折騰一下，好吧我妥協(xié)，畢竟我還是一只非常注重用戶體驗(yàn)的猿。

那就做吧，初步定下的方案是輸入框和登陸按鈕大小不變，在鍵盤彈出的時(shí)候讓logo的大小和位置進(jìn)行改變，從而給鍵盤騰出位置，當(dāng)然在鍵盤收起的時(shí)候還要給它還原一下，就像什么都沒發(fā)生一樣，嗯對(duì)，就是這樣，說了這么多，放張圖先感受一下效果吧:

接下來上正餐，布局上比較簡(jiǎn)單，注意給圖片外邊套上一個(gè)合身的linearlayout就好，因?yàn)榇龝?huì)要靠它改變logo的位置，布局代碼如下：

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
 xmlns:tools="http://schemas.android.com/tools" 
 android:layout_width="match_parent" 
 android:layout_height="match_parent" 
 android:background="@color/white" 
 tools:context=".login.LoginActivity" 
 android:orientation="vertical" 
 android:id="@+id/ll_login_root"> 
 <LinearLayout 
  android:orientation="vertical" 
  android:layout_width="match_parent" 
  android:layout_height="wrap_content" 
  android:layout_marginTop="90dp" 
  android:id="@+id/ll_login_logobg" 
  android:layout_marginBottom="50dp"> 
  <ImageView 
   android:layout_width="160dp" 
   android:layout_height="160dp" 
   android:id="@+id/iv_login_logo" 
   android:background="@mipmap/login_logo" 
   android:layout_gravity="center_horizontal" /> 
 </LinearLayout> 
 <LinearLayout 
  android:orientation="vertical" 
  android:layout_width="match_parent" 
  android:layout_height="match_parent" 
  android:layout_marginLeft="50dp" 
  android:layout_marginRight="50dp"> 
  <LinearLayout 
   android:orientation="horizontal" 
   android:layout_width="match_parent" 
   android:layout_height="50dp"> 
   <ImageView 
    android:layout_width="45dp" 
    android:layout_height="45dp" 
    android:background="@mipmap/login_phone" 
    android:id="@+id/imageView2" 
    android:layout_gravity="bottom" /> 
   <EditText 
    android:layout_width="match_parent" 
    android:layout_height="wrap_content" 
    android:inputType="phone" 
    android:ems="10" 
    android:id="@+id/et_login_phone" 
    android:layout_gravity="center" 
    android:hint="請(qǐng)輸入手機(jī)號(hào)" 
    android:background="@null" 
    android:maxLength="11"/> 
  </LinearLayout> 
  <LinearLayout 
   android:orientation="vertical" 
   android:layout_width="match_parent" 
   android:layout_height="1dp" 
   android:background="@color/text_gray"></LinearLayout> 
  <LinearLayout 
   android:orientation="horizontal" 
   android:layout_width="match_parent" 
   android:layout_height="50dp" > 
   <ImageView 
    android:layout_width="45dp" 
    android:layout_height="45dp" 
    android:background="@mipmap/login_password" 
    android:id="@+id/imageView3" 
    android:layout_gravity="bottom" /> 
   <EditText 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:inputType="phone" 
    android:ems="10" 
    android:id="@+id/et_login_code" 
    android:layout_gravity="center" 
    android:layout_weight="1" 
    android:hint="請(qǐng)輸入驗(yàn)證碼" 
    android:background="@null" 
    android:maxLength="6"/> 
   <Button 
    android:layout_width="90dp" 
    android:layout_height="30dp" 
    android:text="獲取驗(yàn)證碼" 
    android:textColor="@color/white" 
    android:id="@+id/bt_login_getcode" 
    android:background="@mipmap/login_button_blue" 
    android:layout_gravity="center_vertical" 
    android:textSize="14dp" /> 
  </LinearLayout> 
  <LinearLayout 
   android:orientation="vertical" 
   android:layout_width="match_parent" 
   android:layout_height="1dp" 
   android:background="@color/text_gray" 
   android:layout_marginBottom="10dp" /> 
  <LinearLayout 
   android:orientation="horizontal" 
   android:layout_width="match_parent" 
   android:layout_height="20dp" 
   android:id="@+id/ll_login_warning" 
   android:visibility="gone"> 
   <ImageView 
    android:layout_width="25dp" 
    android:layout_height="25dp" 
    android:background="@mipmap/login_warning" 
    android:id="@+id/imageView" 
    android:layout_gravity="center_vertical" /> 
   <TextView 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:textAppearance="?android:attr/textAppearanceMedium" 
    android:text="請(qǐng)輸入驗(yàn)證碼" 
    android:id="@+id/tv_login_wraning" 
    android:layout_gravity="center_vertical" 
    android:textColor="@color/text_red" 
    android:textSize="13dp" /> 
  </LinearLayout> 
  <Button 
   android:layout_width="match_parent" 
   android:layout_height="40dp" 
   android:textColor="@color/white" 
   android:id="@+id/bt_login_submit" 
   android:background="@mipmap/login_button_gray" 
   android:text="登 錄" 
   android:textSize="18dp" 
   android:layout_marginTop="10dp" /> 
 </LinearLayout> 
</LinearLayout>

主代碼如下，我會(huì)把注釋添加到代碼中，因?yàn)槭钦麄€(gè)模塊的代碼所以也會(huì)有一些其他功能在里邊：

package com.millionideas.cm.login; 
import android.app.ProgressDialog; 
import android.content.Intent; 
import android.os.Bundle; 
import android.os.Handler; 
import android.text.Editable; 
import android.text.TextWatcher; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.Button; 
import android.widget.EditText; 
import android.widget.ImageView; 
import android.widget.LinearLayout; 
import android.widget.TextView; 
import com.millionideas.cm.R; 
import com.millionideas.cm.home.HomeActivity; 
import com.millionideas.cm.main.BaseActivity; 
import com.millionideas.cm.tools.TimeCountUtils; 
import org.xutils.view.annotation.ContentView; 
import org.xutils.view.annotation.Event; 
import org.xutils.view.annotation.ViewInject; 
import java.util.regex.Matcher; 
import java.util.regex.Pattern; 
@ContentView(R.layout.activity_login) 
public class LoginActivity extends BaseActivity implements View.OnLayoutChangeListener{ 
//用xUtils進(jìn)行控件綁定 
 @ViewInject(R.id.iv_login_logo) 
 ImageView iv_login_logo; 
 @ViewInject(R.id.ll_login_logobg) 
 LinearLayout ll_login_logobg; 
 @ViewInject(R.id.et_login_phone) 
 EditText et_login_phone; 
 @ViewInject(R.id.et_login_code) 
 EditText et_login_code; 
 @ViewInject(R.id.ll_login_warning) 
 LinearLayout ll_login_warning; 
 @ViewInject(R.id.tv_login_wraning) 
 TextView tv_login_wraning; 
 @ViewInject(R.id.bt_login_getcode) 
 Button bt_login_getcode; 
 @ViewInject(R.id.bt_login_submit) 
 Button bt_login_submit; 
 @ViewInject(R.id.ll_login_root) 
 LinearLayout activityRootView;//需要操作的布局 
 private TimeCountUtils timeCountUtils; 
 private Matcher phone_num; 
 private Pattern phonenumber; 
 private ProgressDialog progressDialog; 
 private Handler handler; 
 private int screenHeight = 0;//屏幕高度 
 private int keyHeight = 0; //軟件盤彈起后所占高度 
 @Override 
 protected void onCreate(Bundle savedInstanceState) { 
  super.onCreate(savedInstanceState); 
  screenHeight = this.getWindowManager().getDefaultDisplay().getHeight(); //獲取屏幕高度 
  keyHeight = screenHeight / 3;//彈起高度為屏幕高度的1/3 
  timeCountUtils = new TimeCountUtils(LoginActivity.this, 60000, 1000, bt_login_getcode);//時(shí)間工具類用以實(shí)現(xiàn)倒計(jì)時(shí) 
  progressDialog=new ProgressDialog(this);//對(duì)話框 
  handler=new Handler(); 
  bt_login_submit.setClickable(false); 
  et_login_phone.addTextChangedListener(new TextWatcher() {//為edittext添加文本改變監(jiān)聽，根據(jù)是否有文本輸入更改確認(rèn)按鈕的背景顏色 
   @Override 
   public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) { 
   } 
   @Override 
   public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) { 
   } 
   @Override 
   public void afterTextChanged(Editable editable) { 
    if (!et_login_phone.getText().toString().equals("")){ 
     bt_login_submit.setClickable(true); 
     bt_login_submit.setBackgroundResource(R.drawable.login_button); 
    }else { 
     bt_login_submit.setClickable(false); 
     bt_login_submit.setBackgroundResource(R.mipmap.login_button_gray); 
    } 
   } 
  }); 
 } 
 //xUtils的事件處理 
 @Event(value = {R.id.bt_login_submit, R.id.bt_login_getcode}, type = View.OnClickListener.class) 
 private void onClick(View view) { 
  switch (view.getId()) { 
   case R.id.bt_login_submit://確認(rèn)按鈕事件 
    if (!CheckPhone(et_login_phone).matches()) {//判斷手機(jī)號(hào)格式 
     ll_login_warning.setVisibility(View.VISIBLE); 
     tv_login_wraning.setText("手機(jī)號(hào)碼格式不正確"); 
    } else if (!et_login_code.getText().toString().equals("000")) {//驗(yàn)證碼判斷，為方便測(cè)試設(shè)置了默認(rèn)值 
     ll_login_warning.setVisibility(View.VISIBLE); 
     tv_login_wraning.setText("驗(yàn)證碼不正確"); 
    } else {//條件全部滿足，開始登陸 
     ll_login_warning.setVisibility(View.GONE); 
     progressDialog.setMessage("正在登錄…"); 
     progressDialog.show();//彈出加載對(duì)話框 
     handler.postDelayed(new Runnable() {//設(shè)置一個(gè)1s的延時(shí)操作模擬登陸的過程 
      @Override 
      public void run() {//登陸成功關(guān)掉對(duì)話框，跳轉(zhuǎn)頁(yè)面，關(guān)掉本頁(yè) 
       progressDialog.dismiss();//不能用hide 
       Intent intent=new Intent(LoginActivity.this, HomeActivity.class); 
       startActivity(intent); 
       LoginActivity.this.finish(); 
      } 
     },1000); 
    } 
    break; 
   case R.id.bt_login_getcode: 
    if (CheckPhone(et_login_phone).matches()) {//手機(jī)號(hào)正確則獲取驗(yàn)證碼，開啟倒計(jì)時(shí) 
     ll_login_warning.setVisibility(View.GONE); 
     bt_login_getcode.setBackgroundResource(R.mipmap.login_button_gray); 
     timeCountUtils.start(); 
    } else { 
     ll_login_warning.setVisibility(View.VISIBLE); 
     tv_login_wraning.setText("手機(jī)號(hào)碼格式不正確"); 
    } 
    break; 
  } 
 } 
 public Matcher CheckPhone(EditText editText) {//判斷手機(jī)號(hào)格式 
  phonenumber = Pattern 
    .compile("^[1][3-8][0-9]{9}$"); 
  phone_num = phonenumber.matcher(editText.getText() 
    .toString()); 
  return phone_num; 
 } 
 @Override 
 protected void onResume() { 
  super.onResume(); 
  activityRootView.addOnLayoutChangeListener(this);//給需要操作的布局設(shè)置監(jiān)聽 
 } 
 @Override 
 public void onLayoutChange(View v, int left, int top, int right, 
        int bottom, int oldLeft, int oldTop, int oldRight, int oldBottom) { 
  /* old是改變前的左上右下坐標(biāo)點(diǎn)值，沒有old的是改變后的左上右下坐標(biāo)點(diǎn)值 
  現(xiàn)在認(rèn)為只要控件將Activity向上推的高度超過了1/3屏幕高，就認(rèn)為軟鍵盤彈起*/ 
  if (oldBottom != 0 && bottom != 0 && (oldBottom - bottom > keyHeight)) { 
   ViewGroup.LayoutParams params = iv_login_logo.getLayoutParams();//獲取布局，設(shè)置鍵盤彈起后logo的寬高 
   params.height = 300; 
   params.width = 300; 
   iv_login_logo.setLayoutParams(params); 
   LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(ll_login_logobg.getLayoutParams()); 
   lp.setMargins(0, 90, 0, 50);//設(shè)置包含logo的布局的位置 
   ll_login_logobg.setLayoutParams(lp); 
  } else if (oldBottom != 0 && bottom != 0 && (bottom - oldBottom > keyHeight)) {//鍵盤收回后，logo恢復(fù)原來大小，位置同樣回到初始位置 
   ViewGroup.LayoutParams params = iv_login_logo.getLayoutParams(); 
   params.height = 480; 
   params.width = 480; 
   iv_login_logo.setLayoutParams(params); 
   LinearLayout.LayoutParams lp = new LinearLayout.LayoutParams(ll_login_logobg.getLayoutParams()); 
   lp.setMargins(0, 270, 0, 150); 
   ll_login_logobg.setLayoutParams(lp); 
  } 
 } 
}

以上所述是小編給大家介紹的Android實(shí)現(xiàn)登陸頁(yè)logo隨鍵盤收放動(dòng)態(tài)伸縮（完美解決鍵盤彈出遮擋控件的問題），希望對(duì)大家有所幫助，如果大家有任何疑問請(qǐng)給我留言，小編會(huì)及時(shí)回復(fù)大家的。在此也非常感謝大家對(duì)腳本之家網(wǎng)站的支持！

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