我发现ProgressDialog现在已经被弃用了。除了ProgressBar,还有什么替代工具可以代替它。 我使用的是android studio 2.3.3版。
ProgressDialog progressDialog=new ProgressDialog(this);
progressDialog.show();
我发现ProgressDialog现在已经被弃用了。除了ProgressBar,还有什么替代工具可以代替它。 我使用的是android studio 2.3.3版。
ProgressDialog progressDialog=new ProgressDialog(this);
progressDialog.show();
当前回答
你可以使用AlertDialog作为ProgressDialog,参考下面的ProgressDialog代码。无论何时显示进度对话框,都需要调用此函数。
代码:
public void setProgressDialog() {
int llPadding = 30;
LinearLayout ll = new LinearLayout(this);
ll.setOrientation(LinearLayout.HORIZONTAL);
ll.setPadding(llPadding, llPadding, llPadding, llPadding);
ll.setGravity(Gravity.CENTER);
LinearLayout.LayoutParams llParam = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
llParam.gravity = Gravity.CENTER;
ll.setLayoutParams(llParam);
ProgressBar progressBar = new ProgressBar(this);
progressBar.setIndeterminate(true);
progressBar.setPadding(0, 0, llPadding, 0);
progressBar.setLayoutParams(llParam);
llParam = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,
ViewGroup.LayoutParams.WRAP_CONTENT);
llParam.gravity = Gravity.CENTER;
TextView tvText = new TextView(this);
tvText.setText("Loading ...");
tvText.setTextColor(Color.parseColor("#000000"));
tvText.setTextSize(20);
tvText.setLayoutParams(llParam);
ll.addView(progressBar);
ll.addView(tvText);
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setCancelable(true);
builder.setView(ll);
AlertDialog dialog = builder.create();
dialog.show();
Window window = dialog.getWindow();
if (window != null) {
WindowManager.LayoutParams layoutParams = new WindowManager.LayoutParams();
layoutParams.copyFrom(dialog.getWindow().getAttributes());
layoutParams.width = LinearLayout.LayoutParams.WRAP_CONTENT;
layoutParams.height = LinearLayout.LayoutParams.WRAP_CONTENT;
dialog.getWindow().setAttributes(layoutParams);
}
}
输出:
其他回答
正如文档页中提到的,替代方案是ProgressBar。ProgressDialog的外观可以通过在AlertDialog中放置ProgressBar来复制。
你仍然可以使用它,但Android不希望你使用它,这就是它被弃用的原因。所以你应该考虑用另一种方式解决你的问题,比如在你的布局中嵌入一个ProgressBar。
是的,ProgressDialog已弃用,但Dialog没有。
您可以将自己的XML文件(包含进度条和加载文本)扩展到对话框对象中,然后使用show()和dismiss()函数显示或隐藏它。 下面是一个例子(Kotlin):
ProgressDialog类:
class ProgressDialog {
companion object {
fun progressDialog(context: Context): Dialog{
val dialog = Dialog(context)
val inflate = LayoutInflater.from(context).inflate(R.layout.progress_dialog, null)
dialog.setContentView(inflate)
dialog.setCancelable(false)
dialog.window!!.setBackgroundDrawable(
ColorDrawable(Color.TRANSPARENT))
return dialog
}
}
}
XML
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent"
android:background="#fff"
android:padding="13dp"
android:layout_height="wrap_content">
<ProgressBar
android:id="@+id/progressBar"
style="?android:attr/progressBarStyle"
android:layout_width="100dp"
android:layout_margin="7dp"
android:layout_height="100dp"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_margin="7dp"
android:layout_toEndOf="@+id/progressBar"
android:text="Loading..." />
</RelativeLayout>
在你的代码中: 只需执行var dialog = progressdialog。progressdialog (context)
显示方法:dialog.show()
隐藏方法:dialog.dismiss()
Kotlin和androidx DialogFragment的另一个解决方案
通过使用DialogFragment,你不必每次都在需要显示对话框的每个屏幕上调整窗口的大小,我认为这是一个更干净的解决方案
创建对话框类
class BaseProgressDialog : DialogFragment() {
companion object {
const val DIALOG_TAG = "BaseProgressDialogFragment"
}
override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
return activity?.let {
val builder = AlertDialog.Builder(it, R.style.MainAlertDialog)
val inflater = requireActivity().layoutInflater
val dialogView = inflater.inflate(R.layout.progress_dialog, null)
builder.setView(dialogView)
builder.create()
} ?: throw IllegalStateException("Activity cannot be null")
}
override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
dialog?.setCanceledOnTouchOutside(false)
dialog?.setCancelable(false)
return super.onCreateView(inflater, container, savedInstanceState)
}
override fun onResume() {
super.onResume()
val size = resources.getDimensionPixelSize(R.dimen.size_80dp)
dialog?.window?.setLayout(size, size)
}
}
在styles.xml中创建样式
<style name="MainAlertDialog" parent="Theme.AppCompat.Light.Dialog.Alert">
<item name="android:windowBackground">@drawable/bg_alert_dialog</item>
</style>
为对话框bg_alert_dialog.xml创建背景
<shape xmlns:android="http://schemas.android.com/apk/res/android">
<solid android:color="?attr/colorSecondary"/>
<corners android:radius="@dimen/radius_10dp" />
</shape>
为对话框progress_dialog.xml创建布局
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/bg_alert_dialog"
android:gravity="center"
android:orientation="vertical"
android:padding="@dimen/padding_16dp">
<com.google.android.material.progressindicator.CircularProgressIndicator
android:layout_width="@dimen/size_40dp"
android:layout_height="@dimen/size_40dp"
android:indeterminate="true"
app:indicatorColor="?attr/colorPrimary" />
</LinearLayout>
调用片段中的对话框
private var progressDialog = BaseProgressDialog()
activity?.let {
progressDialog.show(it.supportFragmentManager, BaseProgressDialog.DIALOG_TAG)
}
这是它看起来的样子:
也许这个指南可以帮助你。
通常我更喜欢用指示器制作自定义alertdialog。它解决了诸如自定义App视图等问题。
你可以使用AlertDialog作为ProgressDialog,参考下面的ProgressDialog代码。无论何时显示进度对话框,都需要调用此函数。
代码:
public void setProgressDialog() {
int llPadding = 30;
LinearLayout ll = new LinearLayout(this);
ll.setOrientation(LinearLayout.HORIZONTAL);
ll.setPadding(llPadding, llPadding, llPadding, llPadding);
ll.setGravity(Gravity.CENTER);
LinearLayout.LayoutParams llParam = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
llParam.gravity = Gravity.CENTER;
ll.setLayoutParams(llParam);
ProgressBar progressBar = new ProgressBar(this);
progressBar.setIndeterminate(true);
progressBar.setPadding(0, 0, llPadding, 0);
progressBar.setLayoutParams(llParam);
llParam = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,
ViewGroup.LayoutParams.WRAP_CONTENT);
llParam.gravity = Gravity.CENTER;
TextView tvText = new TextView(this);
tvText.setText("Loading ...");
tvText.setTextColor(Color.parseColor("#000000"));
tvText.setTextSize(20);
tvText.setLayoutParams(llParam);
ll.addView(progressBar);
ll.addView(tvText);
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setCancelable(true);
builder.setView(ll);
AlertDialog dialog = builder.create();
dialog.show();
Window window = dialog.getWindow();
if (window != null) {
WindowManager.LayoutParams layoutParams = new WindowManager.LayoutParams();
layoutParams.copyFrom(dialog.getWindow().getAttributes());
layoutParams.width = LinearLayout.LayoutParams.WRAP_CONTENT;
layoutParams.height = LinearLayout.LayoutParams.WRAP_CONTENT;
dialog.getWindow().setAttributes(layoutParams);
}
}
输出: