Question

我使用以下drawable“ciruclar_progress_bar.xml”

定义了一个循环进度条

<?xml version="1.0" encoding="utf-8"?>

<item android:id="@android:id/progress">
    <shape
        android:innerRadiusRatio="2.5"
        android:shape="ring"
        android:thicknessRatio="25.0" >
        <gradient
            android:centerColor="@color/gray"
            android:endColor="@color/gray"
            android:startColor="@color/gray"
            android:type="sweep" />
    </shape>
</item>
<item android:id="@android:id/secondaryProgress">
    <shape
        android:innerRadiusRatio="2.5"
        android:shape="ring"
        android:thicknessRatio="25.0" >
        <gradient
            android:centerColor="@color/green"
            android:endColor="@color/green"
            android:startColor="@color/green"
            android:type="sweep" />
    </shape>
</item>

我使用以下代码

在我的布局中使用了这个drawable for ProgressBar

  <ProgressBar
            android:id="@+id/progressWheel"
            style="?android:attr/progressBarStyleHorizontal"
            android:layout_width="152dp"
            android:layout_height="152dp"
            android:layout_centerInParent="true"
            android:progress="100"
            android:indeterminate="false"
            android:progressDrawable="@drawable/circular_progress_bar" />

我使用以下代码显示progressBar的进度 progressWheel.setSecondaryProgress(percent); （使用次要进度，因为绿色应该在戒指的黑色上面。）

这将绘制圆形ProgressBar，其起始位置在右侧（0°），如下图所示

enter image description here

我希望从顶部开始进度，如下图所示

enter image description here

我尝试将android:angle="270"放在drawable xml的渐变标记中，但没有运气。有什么方法可以从顶部开始扫掠角度吗？

Answer 1

尝试为进度项指定旋转度。

<?xml version="1.0" encoding="UTF-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android" >
    <item android:id="@android:id/progress">
        <rotate
            android:fromDegrees="270"
            android:toDegrees="270"
            android:pivotX="50%"
            android:pivotY="50%" >
            <shape
                android:innerRadiusRatio="2.5"
                android:shape="ring"
                android:thicknessRatio="25.0" >
                <gradient
                    android:centerColor="@color/gray"
                    android:endColor="@color/gray"
                    android:startColor="@color/gray"
                    android:type="sweep" />
            </shape>
        </rotate>
    </item>
    <item android:id="@android:id/secondaryProgress">
        <rotate
            android:fromDegrees="270"
            android:toDegrees="270"
            android:pivotX="50%"
            android:pivotY="50%" >
            <shape
                android:innerRadiusRatio="2.5"
                android:shape="ring"
                android:thicknessRatio="25.0" >
                <gradient
                    android:centerColor="@color/green"
                    android:endColor="@color/green"
                    android:startColor="@color/green"
                    android:type="sweep" />
            </shape>
        </rotate>
    </item>
</layer-list>

Answer 2

您还可以在布局XML中对ProgressBar应用旋转。在你的情况下-90°会解决你的问题。

    <ProgressBar
        android:id="@+id/progressDemo"
        style="?android:attr/progressBarStyleHorizontal"
        android:layout_width="152dp"
        android:layout_height="152dp"
        android:layout_centerInParent="true"
        android:indeterminate="false"
        android:progress="10"
        android:rotation="-90"
        android:progressDrawable="@drawable/circular_progress_bar" />

Answer 3

感谢@Zeba我得到了答案。对于在此处遇到相同问题的人，请更新circular_progress_bar.xml

<?xml version="1.0" encoding="utf-8"?>

<item android:id="@android:id/progress">
        <shape
            android:innerRadiusRatio="2.5"
            android:shape="ring"
            android:thicknessRatio="25.0" >
            <gradient
                android:angle="120"
                android:centerColor="@color/gray"
                android:endColor="@color/gray"
                android:startColor="@color/gray"
                android:type="sweep" />
        </shape>
</item>
<item android:id="@android:id/secondaryProgress">
    <rotate
        android:fromDegrees="270"
        android:pivotX="50%"
        android:pivotY="50%"
        android:toDegrees="270" >
        <shape
            android:innerRadiusRatio="2.5"
            android:shape="ring"
            android:thicknessRatio="25.0" >
            <gradient
                android:angle="120"
                android:centerColor="@color/green"
                android:endColor="@color/green"
                android:startColor="@color/green"
                android:type="sweep" />
        </shape>
    </rotate>
</item>

Answer 4

以下是我在没有任何库的纯代码中使用圆圈内百分比制作圆形进度条的方法。

参考文献来自：circular progress bar android

首先创建一个名为circular.xml

的可绘制文件

<?xml version="1.0" encoding="utf-8"?>

<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:id="@android:id/secondaryProgress">
        <shape
            android:innerRadiusRatio="6"
            android:shape="ring"
            android:thicknessRatio="20.0"
            android:useLevel="true">


            <gradient
                android:centerColor="#999999"
                android:endColor="#999999"
                android:startColor="#999999"
                android:type="sweep" />
        </shape>
    </item>

    <item android:id="@android:id/progress">
        <rotate
            android:fromDegrees="270"
            android:pivotX="50%"
            android:pivotY="50%"
            android:toDegrees="270">

            <shape
                android:innerRadiusRatio="6"
                android:shape="ring"
                android:thicknessRatio="20.0"
                android:useLevel="true">


                <rotate
                    android:fromDegrees="0"
                    android:pivotX="50%"
                    android:pivotY="50%"
                    android:toDegrees="360" />

                <gradient
                    android:centerColor="#00FF00"
                    android:endColor="#00FF00"
                    android:startColor="#00FF00"
                    android:type="sweep" />

            </shape>
        </rotate>
    </item>
</layer-list>

现在在activity_main.xml添加以下内容：

  <?xml version="1.0" encoding="utf-8"?>
<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:background="@color/dialog"
    tools:context="com.example.parsaniahardik.progressanimation.MainActivity">

    <ProgressBar

        android:id="@+id/circularProgressbar"
        style="?android:attr/progressBarStyleHorizontal"
        android:layout_width="250dp"
        android:layout_height="250dp"
        android:indeterminate="false"
        android:max="100"
        android:progress="50"
        android:layout_centerInParent="true"
        android:progressDrawable="@drawable/circular"
        android:secondaryProgress="100"
        />

    <ImageView
        android:layout_width="90dp"
        android:layout_height="90dp"
        android:background="@drawable/whitecircle"
        android:layout_centerInParent="true"/>

    <TextView
        android:id="@+id/tv"
        android:layout_width="250dp"
        android:layout_height="250dp"
        android:gravity="center"
        android:text="25%"
        android:layout_centerInParent="true"
        android:textColor="@color/colorPrimaryDark"
        android:textSize="20sp" />

</RelativeLayout>

在activity_main.xml我使用了一个白色背景的圆形图像来显示百分比周围的白色背景。这是图像：

您可以更改此图像的颜色，以围绕百分比文字设置自定义颜色。

现在最后将以下代码添加到MainActivity.java：

import android.content.res.Resources;
import android.graphics.drawable.Drawable;
import android.os.Handler;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.animation.DecelerateInterpolator;
import android.widget.ProgressBar;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

    int pStatus = 0;
    private Handler handler = new Handler();
    TextView tv;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Resources res = getResources();
        Drawable drawable = res.getDrawable(R.drawable.circular);
        final ProgressBar mProgress = (ProgressBar) findViewById(R.id.circularProgressbar);
        mProgress.setProgress(0);   // Main Progress
        mProgress.setSecondaryProgress(100); // Secondary Progress
        mProgress.setMax(100); // Maximum Progress
        mProgress.setProgressDrawable(drawable);

      /*  ObjectAnimator animation = ObjectAnimator.ofInt(mProgress, "progress", 0, 100);
        animation.setDuration(50000);
        animation.setInterpolator(new DecelerateInterpolator());
        animation.start();*/

        tv = (TextView) findViewById(R.id.tv);
        new Thread(new Runnable() {

            @Override
            public void run() {
                // TODO Auto-generated method stub
                while (pStatus < 100) {
                    pStatus += 1;

                    handler.post(new Runnable() {

                        @Override
                        public void run() {
                            // TODO Auto-generated method stub
                            mProgress.setProgress(pStatus);
                            tv.setText(pStatus + "%");

                        }
                    });
                    try {
                        // Sleep for 200 milliseconds.
                        // Just to display the progress slowly
                        Thread.sleep(8); //thread will take approx 1.5 seconds to finish
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                }
            }
        }).start();
    }
}

如果你想制作水平进度条，请点击此链接，它有很多有价值的例子，包含源代码：
http://www.skholingua.com/android-basic/user-interface/form-widgets/progressbar

Answer 5

我发现一个更简单的解决方案是将视图旋转270度，将内部文本设置为透明，并使用您的数据在圆形进度条上设置新的TextView -

<FrameLayout
    android:id="@+id/linearLayout5"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <com.github.lzyzsd.circleprogress.DonutProgress
        android:id="@+id/donut_progress_lodging"
        android:layout_width="90dp"
        android:layout_height="90dp"
        android:layout_gravity="left|top"
        android:layout_marginLeft="30dp"
        app:donut_text_color="@color/tw__transparent"
        android:rotation="270"
        app:donut_finished_color="#34c6f1"
        app:donut_finished_stroke_width="5dp"
        app:donut_unfinished_color="#276894"
        app:donut_unfinished_stroke_width="5dp" />

  <TextView
        android:layout_width="40dp"
        android:layout_height="wrap_content"
        android:text="0%"
        android:textColor="#ffffff"
        android:layout_marginLeft="55dp"
        android:layout_marginBottom="10dp"
        android:textAlignment="center"
        android:id="@+id/textView_percentage_lodging"
        android:layout_gravity="left|center_vertical" />

</FrameLayout>

Answer 6

以某种角度旋转任何视图的简单解决方案是以XML格式旋转。

<ProgressBar
      android:id="@+id/progress_bar"
      style="?android:attr/progressBarStyleHorizontal"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:max="100"
      android:progress="0"
      android:rotation="-90"
      android:progressDrawable="@drawable/circular" />

Android：从顶部（270°）启动循环进度条

6 个答案: