英文:
Is there a way to change all TextViews in Android?
问题
我试图让我的textView在使用以下代码后在4秒内变为不可见，然后再出现：
final TextView textView233 = findViewById(R.id.textView233);
textView233.setText("加载数据中...");
textView233.setVisibility(View.VISIBLE);
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
textView233.setVisibility(View.INVISIBLE);
}
}, 4000);
在我活动中有超过100个textView的情况下，我希望所有的textView都能执行相同的操作，是否有一种方法可以应用于所有的textView，而不必为所有100个textView编写代码？任何帮助将不胜感激，谢谢！
英文:
I'm attempting to make my textView invisible for 4 seconds and then appear after using the code:
final TextView textView233 = findViewById(R.id.textView233);
textView233.setText("Loading data...");
textView233.setVisibility(View.VISIBLE);
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
textView233.setVisibility(View.INVISIBLE);
}
}, 4000);
In the situation where I have over 100 textViews in my activity and I want ALL textviews to do the same, is there a way to apply it to all textViews other than writing the code for all 100 of them? Any help would be appreciated, thanks!
答案1
得分: 2
将所有这些TextView添加到一个LinearLayout中，并在给定的间隔之后隐藏LinearLayout布局，而不是单独隐藏每个TextView。
英文:
add all these TextView inside some LinearLayout and hide the LinearLayout layout after the given internal instead of hiding each and every TextView separately.
答案2
得分: 0
你可以使用自定义类来实现：
AnimTextView.java
import android.os.Handler;
import android.view.View;
import android.widget.TextView;
import java.util.ArrayList;
import java.util.Arrays;
public class AnimTextView {
private ArrayList<TextView> textViewList;
public AnimTextView(TextView ... textViews) {
textViewList = new ArrayList<>();
textViewList.addAll(Arrays.asList(textViews));
}
public void startLoading(){
for (final TextView textView: textViewList) {
textView.setText("加载中..."); // 设置文本为 "加载中..."
textView.setVisibility(View.VISIBLE); // 设置可见性为可见
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
textView.setVisibility(View.INVISIBLE); // 4秒后设置可见性为不可见
}
}, 4000);
}
}
}
现在，在你的主活动中：
AnimTextView animTextView = new AnimTextView(textView1, textView2, textView3, textView4, ...);
当你需要开始加载时：
animTextView.startLoading();
英文:
You can do it with a custom class:
AnimTextView.java
import android.os.Handler;
import android.view.View;
import android.widget.TextView;
import java.util.ArrayList;
import java.util.Arrays;
public class AnimTextView {
private ArrayList<TextView> textViewList;
public AnimTextView(TextView ... textViews) {
textViewList = new ArrayList<>();
textViewList.addAll(Arrays.asList(textViews));
}
public void startLoading(){
for (final TextView textView: textViewList) {
textView.setText("Loading data...");
textView.setVisibility(View.VISIBLE);
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
textView.setVisibility(View.INVISIBLE);
}
}, 4000);
}
}
}
Now, In your Main Activity:
AnimTextView animTextView = new AnimTextView(textView1, textView2, textView3, textView4, ...);
And when you need to start loading:
animTextView.startLoading();
答案3
得分: 0
以下是函数，它将获取活动中的所有TextView（包括嵌套的TextView）并隐藏它们，您可以从您的Handler中调用它：
fun recursiveHideTextAllViews(parent: ViewGroup?) {
for (i in 0 until parent!!.childCount) {
val child: View? = parent.getChildAt(i)
if (child is ViewGroup) {
recursiveHideTextAllViews(child as ViewGroup?)
} else if (child!!.javaClass == AppCompatTextView::class.java) {
child.visibility = View.INVISIBLE;
}
}
}
parent 是您的根视图。
英文:
Here is function that will get all TextViews of the Activity(even nested) and hide, you can call it from your Handler:
fun recursiveHideTextAllViews(parent: ViewGroup?) {
for (i in 0 until parent!!.childCount) {
val child: View? = parent.getChildAt(i)
if (child is ViewGroup) {
recursiveHideTextAllViews(child as ViewGroup?)
} else if (child!!.javaClass == AppCompatTextView::class.java) {
child.visibility = View.INVISIBLE;
}
}
}
parent is your Root view
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