Android用软键盘将整个界面推上去
在Android UI中,我们常常会使用EditText,当用户点击这个EditText时会触发软键盘,这个软键盘会把EditText以下的界面挡住,有时候我们希望用户看到完整的界面,就像下图这样:

原理很简单,将布局的最外层添加一个ScrollView,当用户点击EditText时,将ScrollView滚动到底,废话不说,直接上代码
AndroidMainfest.xml
<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.ipjmc.demo.inputmethod" android:versionCode="1" android:versionName="1.0" > <uses-sdk android:minSdkVersion="8" /> <application android:icon="@drawable/ic_launcher" android:label="@string/app_name" > <activity android:label="@string/app_name" android:name=".InputMethodActivity"<!--只有用户点击了编辑框才显示软键盘,并且会导致原有界面重新布局--> android:windowSoftInputMode="stateHidden|adjustResize" > <intent-filter > <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application></manifest>
<?xml version="1.0" encoding="utf-8"?><ScrollView android:id="@+id/scroll" xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:fillViewport="true" ><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" > <TextView android:text="@string/hello" android:textColor="#000" android:layout_width="fill_parent" android:layout_height="300dip" android:background="#0000FF" /> <EditText android:id="@+id/edit" android:layout_width="match_parent" android:layout_height="wrap_content"/> <Button android:id="@+id/button" android:text="提交" android:layout_width="match_parent" android:layout_height="wrap_content"/></LinearLayout></ScrollView>
package com.ipjmc.demo.inputmethod;import android.app.Activity;import android.os.Bundle;import android.os.Handler;import android.widget.Button;import android.widget.EditText;import android.widget.ScrollView;import android.util.Log;import android.view.View;public class InputMethodActivity extends Activity implements View.OnClickListener {private static final String TAG = "Scroll";private EditText mEdit;private Button mButton;private ScrollView mScrollView;private Handler mHandler = new Handler(); /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); mScrollView = (ScrollView) findViewById(R.id.scroll); mEdit = (EditText) findViewById(R.id.edit); mButton = (Button) findViewById(R.id.button); mEdit.setOnClickListener(this); } @Overridepublic void onClick(View v) {//这里必须要给一个延迟,如果不加延迟则没有效果。我现在还没想明白为什么mHandler.postDelayed(new Runnable() {@Overridepublic void run() {//将ScrollView滚动到底mScrollView.fullScroll(View.FOCUS_DOWN);}}, 100);}}