安卓登录界面让输入框滚动到指定位置的方法

来源：互联网发布：UC数据库设计编辑：程序博客网时间：2024/05/01 02:26
package dw.haiziwang.com.myapplication;import android.app.Activity;import android.os.Handler;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.Menu;import android.view.MenuItem;import android.view.MotionEvent;import android.view.View;import android.view.ViewTreeObserver;import android.widget.EditText;import android.widget.ScrollView;public class LoginActivity extends Activity {    ScrollView scrollView;    EditText editTextName;    Handler handler = new Handler();    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_login);        scrollView = (ScrollView)findViewById(R.id.scrollView);        editTextName = (EditText)findViewById(R.id.id_input_name);        listenerSoftInput();    }    private void listenerSoftInput() {        final View activityRootView = findViewById(R.id.scrollView);       activityRootView.getViewTreeObserver().addOnGlobalLayoutListener(               new ViewTreeObserver.OnGlobalLayoutListener() {            @Override            public void onGlobalLayout() {                int heightDiff = activityRootView.getRootView().getHeight() - activityRootView.getHeight();                if (heightDiff > 100) { // 如果高度差超过100像素，就很有可能是有软键盘...                  scrollToBottom();                 } else {                }            }        });    }//scrollview滑到底部    protected void scrollToBottom() {        handler.postDelayed(new Runnable() {            @Override            public void run() {                scrollView.scrollTo(0,200);            }        }, 100);    }}<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android"    package="dw.haiziwang.com.myapplication" >    <application        android:allowBackup="true"        android:icon="@mipmap/ic_launcher"        android:label="@string/app_name"        android:theme="@style/AppTheme" >        <activity            android:name=".LoginActivity"            android:label="@string/app_name"            >            <intent-filter>                <action android:name="android.intent.action.MAIN" />                <category android:name="android.intent.category.LAUNCHER" />            </intent-filter>        </activity>    </application></manifest>
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