不推荐使用ProgressDialog.使用的替代方法是什么？

Question

我发现ProgressDialog现在已经弃用了.除了之外,还有什么可以代替它ProgressBar.我正在使用android studio版本2.3.3.

ProgressDialog progressDialog=new ProgressDialog(this);
progressDialog.show();

Answer 1

是的,在API level 26它已被弃用,你可以使用progressBar.

使用此代码以编程方式创建:

RelativeLayout layout = findViewById(R.id.display); //在此指定根布局ID

(要么)

RelativeLayout layout = findViewById(this);

RelativeLayout layout = findViewById(R.id.display);  //specify here Root layout Id

要禁用用户交互,只需添加以下代码即可

RelativeLayout layout = findViewById(this);

要恢复用户交互,您只需添加以下代码即可

android.R.attr.progressBarStyleSmall

仅供将来参考,android.R.attr.progressBarStyleHorizontal改为API level 21.

此下面的行代码仅适用于API 21 progressBar.setProgressTintList(ColorStateList.valueOf(Color.RED));

解决方案2:另一种方式

progressBar = new ProgressBar(youractivity.this, null, android.R.attr.progressBarStyleLarge);
RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(100, 100);
params.addRule(RelativeLayout.CENTER_IN_PARENT);
layout.addView(progressBar, params);

Activity.java

progressBar.setVisibility(View.VISIBLE);

更多细节:

1.参考一个

2.参考二

我希望这可以帮到你.

Answer 2

此类在API级别26中已弃用.ProgressDialog是一个模式对话框,可防止用户与应用程序进行交互.您应该使用ProgressBar等进度指示器,而不是使用此类,可以将其嵌入到应用程序的UI中.或者,您可以使用通知来通知用户任务的进度.链接

Android O由于Google新的UI标准,它已被弃用

Answer 3

您可以使用以下代码AlertDialog作为ProgressDialog参考ProgressDialog.每次显示进度对话框时都需要调用此函数.

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:

Answer 4

您可以简单地为进度条设计一个xml界面,并将其作为视图传递给AlertDialog,然后随时显示或关闭对话框.

progress.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="horizontal"
    android:padding="13dp"
    android:layout_centerHorizontal="true"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content">

    <ProgressBar
        android:id="@+id/loader"
        android:layout_marginEnd="5dp"
        android:layout_width="45dp"
        android:layout_height="45dp" />
    <TextView
        android:layout_width="wrap_content"
        android:text="Loading..."
        android:textAppearance="?android:textAppearanceSmall"
        android:layout_gravity="center_vertical"
        android:id="@+id/loading_msg"
        android:layout_toEndOf="@+id/loader"
        android:layout_height="wrap_content" />

</LinearLayout>

显示进度对话框的代码.只需复制此代码并将其粘贴到您的片段即可.

   private void setDialog(boolean show){
        AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
        //View view = getLayoutInflater().inflate(R.layout.progress);
        builder.setView(R.layout.progress);
        Dialog dialog = builder.create();
        if (show)dialog.show();
        else dialog.dismiss();
    }

然后只要想要显示progressdialog就调用该方法,并将true作为参数传递给它来显示它,或者将false传递给false以关闭对话框.

Answer 5

ProgressBar非常简单易用,我打算将其作为简单的进度对话框.第一步是你可以制作你想要显示的对话框的xml布局,让我们说出这个布局的名称

layout_loading_dialog.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="horizontal"
    android:padding="20dp">
    <ProgressBar
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_weight="1" />

    <TextView
        android:layout_width="0dp"
        android:layout_height="match_parent"
        android:layout_weight="4"
        android:gravity="center"
        android:text="Please wait! This may take a moment." />
</LinearLayout>

下一步是创建AlertDialog,它将使用ProgressBar显示此布局

AlertDialog.Builder builder = new AlertDialog.Builder(context);
builder.setCancelable(false); // if you want user to wait for some process to finish,
builder.setView(R.layout.layout_loading_dialog);
AlertDialog dialog = builder.create();

现在剩下的就是在我们这样的点击事件中显示和隐藏这个对话框

dialog.show(); // to show this dialog
dialog.dismiss(); // to hide this dialog

这就是它,它应该工作,因为你可以看到它很简单,很容易实现ProgressBar而不是ProgressDialog.现在您可以在Handler或ASyncTask中显示/关闭此对话框,它可以满足您的需要

Answer 6

是的,不推荐使用ProgressDialog,但不支持Dialog.

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.这是一个例子(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"
    android:layout_above="@+id/no_jobs_pickups"/>
<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:只是做var dialog = ProgressDialog.progressDialog(context)

显示: dialog.show()

隐藏: dialog.dismiss()

Answer 7

好吧,如果你真的想违背他们的意愿,你仍然可以使用Sweet Alert Dialog或自己创建一个.

progress_dialog_layout

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

    <TableRow
        android:layout_centerInParent="true"
        android:layout_width="match_parent"
        android:layout_height="64dp" >

        <ProgressBar
            android:id="@+id/progressBar2"
            style="?android:attr/progressBarStyle"
            android:layout_width="wrap_content"
            android:layout_height="match_parent" />

        <TextView
            android:gravity="center|left"
            android:id="@+id/textView9"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:textColor="@color/black"
            android:textSize="18sp"
            android:text="Downloading data. Please wait.." />
    </TableRow>
</RelativeLayout>

Java代码:

AlertDialog b;
AlertDialog.Builder dialogBuilder;

public void ShowProgressDialog() {
dialogBuilder = new AlertDialog.Builder(DataDownloadActivity.this);
LayoutInflater inflater = (LayoutInflater) getSystemService( Context.LAYOUT_INFLATER_SERVICE );
            View dialogView = inflater.inflate(R.layout.progress_dialog_layout, null);
            dialogBuilder.setView(dialogView);
            dialogBuilder.setCancelable(false);
            b = dialogBuilder.create();
            b.show();
        }

        public void HideProgressDialog(){

            b.dismiss();
        }

Answer 8

You don't need to import any custom library.

I prefer to use the modern AlertDialog so this is the Kotlin version for the great answer posted by Kishan Donga in this page.

Kotlin code:

fun setProgressDialog(context:Context, message:String):AlertDialog {
    val llPadding = 30
    val ll = LinearLayout(context)
    ll.orientation = LinearLayout.HORIZONTAL
    ll.setPadding(llPadding, llPadding, llPadding, llPadding)
    ll.gravity = Gravity.CENTER
    var llParam = LinearLayout.LayoutParams(
                  LinearLayout.LayoutParams.WRAP_CONTENT,
                  LinearLayout.LayoutParams.WRAP_CONTENT)
    llParam.gravity = Gravity.CENTER
    ll.layoutParams = llParam

    val progressBar = ProgressBar(context)
    progressBar.isIndeterminate = true
    progressBar.setPadding(0, 0, llPadding, 0)
    progressBar.layoutParams = llParam

    llParam = LinearLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,
                        ViewGroup.LayoutParams.WRAP_CONTENT)
    llParam.gravity = Gravity.CENTER
    val tvText = TextView(context)
    tvText.text = message
    tvText.setTextColor(Color.parseColor("#000000"))
    tvText.textSize = 20.toFloat()
    tvText.layoutParams = llParam

    ll.addView(progressBar)
    ll.addView(tvText)

    val builder = AlertDialog.Builder(context)
    builder.setCancelable(true)
    builder.setView(ll)

    val dialog = builder.create()
    val window = dialog.window
    if (window != null) {
        val layoutParams = WindowManager.LayoutParams()
        layoutParams.copyFrom(dialog.window?.attributes)
        layoutParams.width = LinearLayout.LayoutParams.WRAP_CONTENT
        layoutParams.height = LinearLayout.LayoutParams.WRAP_CONTENT
                dialog.window?.attributes = layoutParams
    }
    return dialog
}

Usage:

val dialog = setProgressDialog(this, "Loading..")
dialog.show()

Output:

Answer 9

ProgressBar是ProgressDialog的最佳替代方案.用于指示操作进度的用户界面元素.

有关详细信息,请参阅此Google文档: https ://developer.android.com/reference/android/widget/ProgressBar.html

Answer 10

如文档页面所述，替代方法是 ProgressBar. ProgressDialog的外观可以通过将 aProgressBar放入AlertDialog.

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。因此，您应该考虑以另一种方式解决您的问题，例如将 a 嵌入ProgressBar到您的Layout.