希望有人指教。
我在 Android Studio 中创建了一个 Android 应用程序，它以动态和编程的方式将大量按钮添加到表格布局中。按钮的数量由用户设置，因此可能有 1 个或 100 个。使用 tablelayout，它们被整齐地添加到每一行的两个按钮并且大小正确。我对此很满意。
我想在每个按钮前添加另一个 View (以圆形进度条的形式)，以便在按下按钮时圆圈旋转，同时按钮已设置为执行任何操作。我希望进度条最好位于按钮的中间，但我并不过分挑剔。
我能否就实现此目标的最佳方式获得一些建议？我需要在相对布局中重做按钮吗？有没有办法在表格布局中的其他 View 之上添加 View ？欢迎任何意见或建议。
谢谢
我当前的按钮代码...
(假定每行有两个按钮，并且您知道行数和按钮数)。
TableLayout.LayoutParams tableParams = new TableLayout.LayoutParams(TableLayout.LayoutParams.WRAP_CONTENT, TableLayout.LayoutParams.WRAP_CONTENT);
TableRow.LayoutParams rowParams = new TableRow.LayoutParams(0, android.widget.TableRow.LayoutParams.MATCH_PARENT, 3f);
TableLayout tableLayout = (TableLayout) findViewById(R.id.thetablelayout);
tableLayout.removeAllViews();
for (int i = 0; i < NumberOfRows; i++) {
TableRow tableRow = new TableRow(this);
tableRow.setLayoutParams(tableParams);
Button btnOne = new Button(this);
btnOne.setId(1001 + i);
Button btnTwo = new Button(this);
btnTwo.setId(2001 + i);
btnOne.setLayoutParams(rowParams);
btnTwo.setLayoutParams(rowParams);
tableRow.addView(btnOne);
View adivider = new View(this);
adivider.setLayoutParams(new TableRow.LayoutParams(20, TableRow.LayoutParams.MATCH_PARENT));
adivider.setBackgroundColor(Color.TRANSPARENT);
// This bit of code deals with odd/even numbers of buttons.
if (((i + 1) * 2) < NumberOfButtons + 1) {
tableRow.addView(adivider);
tableRow.addView(btnTwo);
btnTwo.setOnClickListener(mGlobal_OnClickListener);
btnTwo.setOnLongClickListener(mGlobal_OnLONGClickListener);
btnTwo.setTextSize(14);
btnTwo.setSingleLine(true);
btnTwo.setTextColor(0xFFFFFFFF);
btnTwo.setText(btnnamearray.get((i * 2) + 1));
btnTwo.setBackgroundResource(R.drawable.buttonright);
} else {
tableRow.addView(adivider);
btnTwo.setBackgroundResource(android.R.color.transparent);
tableRow.addView(btnTwo);
}
View aline3 = new View(this);
aline3.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT, 20));
aline3.setBackgroundColor(Color.TRANSPARENT);
tableLayout.addView(tableRow);
tableLayout.addView(aline3);
}
最佳答案
正如您提到的，我建议将按钮重做为相对布局，这样您就可以在每个按钮 View 中嵌套 ProgressBar(set to visibility="gone")。如果您发布代码，我很乐意进一步提供帮助。
编辑:好的，我为您模拟了这个。花时间阅读所有内容，尤其是评论!
结果:onClick 显示 ProgressBar，onLongClick 隐藏它
private void setupTableLayout(int NumberOfRows, int NumberOfButtons){
TableLayout.LayoutParams tableParams = new TableLayout.LayoutParams(TableLayout.LayoutParams.WRAP_CONTENT, TableLayout.LayoutParams.WRAP_CONTENT);
TableRow.LayoutParams rowParams = new TableRow.LayoutParams(0, android.widget.TableRow.LayoutParams.MATCH_PARENT, 3f);
TableLayout tableLayout = (TableLayout) findViewById(R.id.thetablelayout);
tableLayout.removeAllViews();
for (int i = 0; i < NumberOfRows; i++) {
TableRow tableRow = new TableRow(this);
tableRow.setLayoutParams(tableParams);
RelativeLayout btnOneLayout = (RelativeLayout)getLayoutInflater().inflate(R.layout.custom_button, null);
RelativeLayout btnTwoLayout = (RelativeLayout)getLayoutInflater().inflate(R.layout.custom_button, null);
ProgressBar btnOneProgressBar = (ProgressBar)btnOneLayout.findViewById(R.id.progressBar);
ProgressBar btnTwoProgressBar = (ProgressBar)btnTwoLayout.findViewById(R.id.progressBar);
Button btnOne = (Button)btnOneLayout.findViewById(R.id.button);
btnOne.setText("Btn 1, Row " + i);
btnOne.setId(1001 + i);
Button btnTwo = (Button)btnTwoLayout.findViewById(R.id.button);
btnTwo.setText("Btn 2, Row " + i);
btnTwo.setId(2001 + i);
/* btnOne.setLayoutParams(rowParams); //Weight for width set in Layout file on RelativeLayout
btnTwo.setLayoutParams(rowParams);*/
setButtonClickListener(btnOneLayout, btnOneProgressBar);
setButtonLongClickListener(btnOneLayout, btnOneProgressBar);
tableRow.addView(btnOneLayout); //Add layout, instead of just Button
//Is this done as an invisible separator? You can instead just use Margin on above/below views
View adivider = new View(this);
adivider.setLayoutParams(new TableRow.LayoutParams(20, TableRow.LayoutParams.MATCH_PARENT));
adivider.setBackgroundColor(Color.TRANSPARENT);
// This bit of code deals with odd/even numbers of buttons.
if (((i + 1) * 2) < NumberOfButtons + 1) {
tableRow.addView(adivider);
tableRow.addView(btnTwoLayout);
//Click listeners
setButtonClickListener(btnTwoLayout, btnTwoProgressBar);
setButtonLongClickListener(btnTwoLayout, btnTwoProgressBar);
/* btnTwo.setTextSize(14); //If true for all buttons, can be done in Layout file
btnTwo.setSingleLine(true);
btnTwo.setTextColor(0xFFFFFFFF);*/
//btnTwo.setText(getButtonName((i * 2) + 1));
//btnTwo.setBackgroundResource(R.drawable.buttonright); //I didn't have this drawable
} else {
tableRow.addView(adivider);
btnTwoLayout.setBackgroundResource(android.R.color.transparent); //I changed this to overall layout, not sure if this is what you want
//btnTwoLayout.setVisibility(View.INVISIBLE); //Or View.GONE //Perhaps you want this instead
tableRow.addView(btnTwoLayout);
}
//Is this done as an invisible separator? You can instead just use Margin/Padding on above/below views
View aline3 = new View(this);
aline3.setLayoutParams(new TableRow.LayoutParams(TableRow.LayoutParams.MATCH_PARENT, 20));
aline3.setBackgroundColor(Color.TRANSPARENT);
tableLayout.addView(tableRow);
tableLayout.addView(aline3);
}
}
private String getButtonName(int position){
String name = "";
switch (position){
case 0:
name = "Bob";
break;
case 1:
name = "Jim";
break;
default:
name = "Default";
break;
}
return name;
}
private void setButtonClickListener(RelativeLayout layout, final ProgressBar progressBar){
layout.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//Do something
progressBar.setVisibility(View.VISIBLE);
}
});
}
private void setButtonLongClickListener(RelativeLayout layout, final ProgressBar progressBar){
layout.setOnLongClickListener(new View.OnLongClickListener() {
@Override
public boolean onLongClick(View v) {
//Do something
progressBar.setVisibility(View.GONE);
return true;
}
});
}
用你想要的调用函数...
setupTableLayout(10, 2);
以及必要的布局文件
activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent">
<TableLayout
android:id="@+id/thetablelayout"
android:layout_width="match_parent"
android:layout_height="match_parent">
</TableLayout>
</ScrollView>
</RelativeLayout>
自定义按钮.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="wrap_content"
android:layout_width="wrap_content"
android:background="@android:color/holo_blue_bright"
android:padding="24dp">
<Button
android:id="@+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@android:color/holo_red_dark"
android:text="Button"
android:gravity="center"
android:textColor="@android:color/white"
android:singleLine="true"
android:clickable="false">
</Button>
<ProgressBar
android:id="@+id/progressBar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@android:color/holo_green_dark"
android:layout_centerInParent="true"
android:visibility="gone"
/>
</RelativeLayout>
祝你好运，不要害怕提出更多问题。 :-)
关于java - 如何相对于表格布局中的另一个 View 添加一个 View (例如圆形进度条)，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/31303607/