如何点击一个按钮后，使具有隐形属性“可见”视图 [英] How to make Views with an Invisible attribute 'Visible' after clicking a button

问题描述

我有几个浏览，文本视图和一个按钮，有机器人：知名度=看不见的属性。我的目标是点击驻留上述这些无形的小部件，使这些部件将成为可见的按钮。我创建了一个名为VisibilityActivity.java另一个Java类，并尝试下面的方法。但由于某些原因，当我运行应用程序，该按钮不会做任何事情。我不知道我错过了什么。

I have several Views, text views, and a button that have the android:visibility="invisible" attribute. My goal is to click a button that resides above these 'invisible' widgets, so that these widgets will become visible. I created another java class called 'VisibilityActivity.java" and tried the following method. But for some reason when I run the app, the button doesn't do anything. I don't know what I'm missing.

这里的code：

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class VisibilityActivity extends Activity {

    private View mVictim;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.new_property3);

        mVictim = findViewById(R.id.horizontalRule1);
        mVictim = findViewById(R.id.TextView03);
        mVictim = findViewById(R.id.horizontalRule2);

        Button submitRating = (Button) findViewById(R.id.submitRatingButton);

        submitRating.setOnClickListener(mVisibleListener);

    }

    OnClickListener mVisibleListener = new OnClickListener() {
        public void onClick(View v) {
            mVictim.setVisibility(View.INVISIBLE);
        }
    };

}

下面是XML：

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

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:background="@drawable/custom_background"
android:isScrollContainer="true"
android:orientation="vertical"
android:paddingTop="10dp" >

    <TextView
    android:id="@+id/textView1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginBottom="5dp"
    android:layout_gravity="center"
    android:text="@string/ratingsInfo"
    android:textAppearance="?android:attr/textAppearanceLarge"
    android:textColor="@color/black1" />

    <View 
    android:layout_width="fill_parent" 
    android:layout_height="2dp"
    android:background="@color/black1"
    android:layout_marginLeft="2dp"
    android:layout_marginRight="2dp"
    android:layout_marginBottom="5dp" />

    <TextView
    android:id="@+id/textView3"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginBottom="5dp"
    android:text="@string/yourRating"
    android:textAppearance="?android:attr/textAppearanceMedium"
    android:textColor="@color/black1" />

    <RatingBar
    android:id="@+id/ratingBar1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="center"
    android:layout_marginBottom="10dp" />

    <Button
    android:id="@+id/submitRatingButton"
    android:layout_width="275dp"
    android:layout_height="wrap_content"
    android:layout_gravity="center"
    android:layout_marginBottom="10dp"
    android:background="@drawable/custom_button"
    android:text="@string/submitRating"
    android:textColor="@color/black1" />


    <View 
    android:id="@+id/horizontalRule1"
    android:layout_width="fill_parent" 
    android:layout_height="2dp"
    android:background="@color/black1"
    android:layout_marginLeft="2dp"
    android:layout_marginRight="2dp"
    android:layout_marginBottom="5dp"
    android:visibility="invisible" />

    <TextView
    android:id="@+id/TextView03"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginBottom="5dp"
    android:layout_gravity="center"
    android:text="@string/summaryInfo"
    android:textAppearance="?android:attr/textAppearanceLarge"
    android:textColor="@color/black1"
    android:visibility="invisible" />

    <View 
    android:id="@+id/horizontalRule2"
    android:layout_width="fill_parent" 
    android:layout_height="2dp"
    android:background="@color/black1"
    android:layout_marginLeft="2dp"
    android:layout_marginRight="2dp"
    android:layout_marginBottom="5dp"
    android:visibility="invisible" />

    <TextView
    android:id="@+id/TextView01"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginBottom="5dp"
    android:text="@string/ourRating"
    android:textAppearance="?android:attr/textAppearanceMedium"
    android:textColor="@color/black1"
    android:visibility="invisible" />

    <RatingBar
    android:id="@+id/ratingBar2"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="center"
    android:stepSize=".01"
    android:layout_marginBottom="10dp"
    android:visibility="invisible" />

    <TextView
    android:id="@+id/TextView02"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginBottom="5dp"
    android:text="@string/overallRating"
    android:textAppearance="?android:attr/textAppearanceMedium"
    android:textColor="@color/black1"
    android:visibility="invisible" />

    <RatingBar
    android:id="@+id/ratingBar3"
    android:color="@color/black1"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="center"
    android:stepSize=".01"
    android:layout_marginBottom="40dp"
    android:visibility="invisible" />

    <Button
    android:id="@+id/saveContinueButton3"
    android:layout_width="275dp"
    android:layout_height="wrap_content"
    android:layout_gravity="center"
    android:layout_marginBottom="15dp"
    android:background="@drawable/custom_button"
    android:text="@string/saveContinue"
    android:textColor="@color/black1"
    android:onClick="onSaveAndContinue3Clicked"
    android:visibility="invisible" />

</LinearLayout>
</ScrollView>

感谢。帮助将不胜AP preciated！

Thanks. Help would be greatly appreciated!

推荐答案

我更新的 user936414 的回答。

OnClickListener mVisibleListener = new OnClickListener() {
    public void onClick(View v) {

        if( mText.getVisibility() == View.INVISIBLE )
            mText.setVisibility(View.VISIBLE);
        else
            mText.setVisibility(View.INVISIBLE);

        if( mRule1.getVisibility() == View.INVISIBLE )
            mRule1.setVisibility(View.VISIBLE);
        else
            mRule1.setVisibility(View.INVISIBLE);

        if( mRule2.getVisibility() == View.INVISIBLE )
            mRule2.setVisibility(View.VISIBLE);
        else
            mRule2.setVisibility(View.INVISIBLE);
    }
};

此外，你可能要与View.GONE进行试验。

Also you might want to experiment with View.GONE.

这篇关于如何点击一个按钮后，使具有隐形属性“可见”视图的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！