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我有一个包含许多 ViewsStubs 的滚动视图布局,这些视图存根会根据用户操作(例如......回答第一个问题会出现第二个问题和答案字段(editText)而膨胀(显示))

我的问题是在回答第一个问题并单击提交后,下一个问题可见,但答案字段隐藏在软键盘下......用户看不到他正在输入的内容。

我想要的是任何新显示的editText/微调器/复选框必须出现在屏幕顶部(动态滚动到这些视图)。

如何做到这一点?

4

4 回答 4

1

以我的代码为例,您可以执行以下操作:将XML设置为:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <ScrollView
        android:id="@+id/scrlv"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:background="#123789" >

        <LinearLayout
            android:layout_width="fill_parent"
            android:layout_height="fill_parent"
            android:background="#1188ff" >

            <RelativeLayout
                android:layout_width="fill_parent"
                android:layout_height="fill_parent"
                android:layout_below="@+id/headerlayout"
                android:background="#456789" >

                <EditText
                    android:id="@+id/etemail"
                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"
                    android:layout_marginLeft="20dp"
                    android:layout_marginRight="20dp"
                    android:layout_marginTop="40dp"
                    android:hint="Text 1"
                    android:maxLines="3" />

                <EditText
                    android:id="@+id/etpassword"
                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"
                    android:layout_alignLeft="@+id/etemail"
                    android:layout_alignRight="@+id/etemail"
                    android:layout_below="@+id/etemail"
                    android:hint="Text 2"
                    android:inputType="textPassword"
                    android:maxLines="3" />

                <EditText
                    android:id="@+id/etusername"
                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"
                    android:layout_alignLeft="@+id/etemail"
                    android:layout_alignRight="@+id/etemail"
                    android:layout_below="@+id/etpassword"
                    android:hint="Text 3"
                    android:maxLines="3" />

                <EditText
                    android:id="@+id/etphone"
                    android:layout_width="fill_parent"
                    android:layout_height="wrap_content"
                    android:layout_alignLeft="@+id/etemail"
                    android:layout_alignRight="@+id/etemail"
                    android:layout_below="@+id/etusername"
                    android:hint="Text 4"
                    android:inputType="text"
                    android:maxLines="5" />

                <CheckBox
                    android:id="@+id/chkterms"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_alignLeft="@+id/etemail"
                    android:layout_alignRight="@+id/etemail"
                    android:layout_below="@+id/etphone"
                    android:layout_marginTop="10dp"
                    android:text="Conditions Aplly"
                    android:textColor="@android:color/black" />

                <Button
                    android:id="@+id/btnlogin"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_below="@+id/chkterms"
                    android:layout_centerHorizontal="true"
                    android:layout_marginTop="10dp"
                    android:text="Login" />
            </RelativeLayout>
        </LinearLayout>
    </ScrollView>

</RelativeLayout>

然后代码:

[1] 获取设备的屏幕分辨率:Height, Width

[2] 对 EditText 进行 onFocusChange

[3] 在那,如果您的 EditText 获得焦点,那么

[4] 获取 EditText 的底部,如果底部大于 (ScreenHeight / 3) 则

[5] 滚动 Your_ScrollView 到 (left, (ScreenHeight/3));

public class MainActivity extends Activity implements OnClickListener{
    private EditText etEmail, etPassword, etUserName, etPhoneNo;
    private CheckBox chkTerms;
    private Button btnLogin;
    ScrollView scrlv;

    int sw, sh, left, bottom;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        scrlv = (ScrollView) findViewById(R.id.scrlv);

        etEmail = (EditText) findViewById(R.id.etemail);
        etPassword = (EditText) findViewById(R.id.etpassword);
        etUserName = (EditText) findViewById(R.id.etusername);
        etPhoneNo = (EditText) findViewById(R.id.etphone);

        DisplayMetrics dm = new DisplayMetrics();
        getWindowManager().getDefaultDisplay().getMetrics(dm);
        sw = dm.widthPixels;
        sh = dm.heightPixels;
        System.out.println("Screen Width = " + sw);
        System.out.println("Screen Height = " + sh);

        chkTerms = (CheckBox) findViewById(R.id.chkterms);

        btnLogin = (Button) findViewById(R.id.btnlogin);
        btnLogin.setOnClickListener(this);

        etUserName.setOnFocusChangeListener(new OnFocusChangeListener() {
            @Override
            public void onFocusChange(View v, boolean hasFocus) {
                if(etUserName.hasFocus()) {
                    left = etUserName.getLeft();
                    bottom = etUserName.getTop();
                    if (bottom > sh / 3) {
                        System.out.println("Umn Left :: " + left);
                        System.out.println("Umn Bottom :: " + bottom);
                        scrlv.scrollTo(left, (sh/3));
                        left = etUserName.getLeft();
                        bottom = etUserName.getTop();
                        System.out.println("Umn Left :: " + left);
                        System.out.println("Unm Bottom :: " + bottom);
                    }
                }
            }
        });

        etPhoneNo.setOnFocusChangeListener(new OnFocusChangeListener() {
            @Override
            public void onFocusChange(View v, boolean hasFocus) {
                if(etPhoneNo.hasFocus()) {
                    left = etPhoneNo.getLeft();
                    bottom = etPhoneNo.getTop();
                    if (bottom > sh / 3) {
                        System.out.println("Phno Left :: " + left);
                        System.out.println("Phno Bottom :: " + bottom);
                        scrlv.scrollTo(0, (sh/3));
                        left = etPhoneNo.getLeft();
                        bottom = etPhoneNo.getTop();
                        System.out.println("Phno Left :: " + left);
                        System.out.println("Phno Bottom :: " + bottom);
                    }
                }
            }
        });

    }

    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub

    }
}
于 2012-07-18T15:28:38.697 回答
0

您可以尝试 requestRectangleOnScreen 方法以确保您的视图可见。请参阅:http: //developer.android.com/reference/android/view/View.html#requestRectangleOnScreen%28android.graphics.Rect%29

public boolean requestRectangleOnScreen (Rect rectangle)
Since: API Level 1

Request that a rectangle of this view be visible on the screen, scrolling if necessary just enough.

A View should call this if it maintains some notion of which part of its content is interesting. For example, a text editing view should call this when its cursor moves.
Parameters
rectangle   The rectangle.
Returns

    Whether any parent scrolled. 
于 2012-07-18T13:00:58.823 回答
0

在您的布局中,您可以尝试以下一些操作:

1) 设置属性 android:fillViewPort="true"

2)将编辑文本的权重设置为“1”(假设没有其他对象的权重为 1)

3) 你的滚动视图是否包含你所有的文本视图/编辑文本?尝试使用该 fillViewPort 属性将整个布局包围在滚动视图中可能是值得的。

这是滚动视图及其复杂性的一个很好的链接:

http://www.curious-creature.org/2010/08/15/scrollviews-handy-trick/

于 2012-07-18T14:15:52.500 回答
0

使用以下布局应该在显示软键盘时将底部 EditText 向上移动(在某些时候调用 view.setVisibility(true)):

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent" >

    <ListView
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:layout_above="@+id/answers" />

    <EditText
        android:id="@+id/answers"
        android:layout_width="fill_parent"
        android:layout_height="200dp"
        android:layout_alignParentBottom="true"
        android:visibility="invisible"/>

</RelativeLayout>
于 2012-07-18T14:21:35.000 回答