这是我如何在纯代码中制作带有圆形进度条和圆内百分比的方法,没有使用任何库。
参考来源:Android圆形进度条
首先创建一个名为 circular.xml
的可绘文件。
<?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>
现在在你的
activity_main.xml
中添加以下内容:
<?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
中,我使用了一个带有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:
你可以更改此图像的颜色,以设置百分比文本周围的自定义颜色。
现在最后将以下代码添加到 MainActivity.java 中:
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);
mProgress.setSecondaryProgress(100);
mProgress.setMax(100);
mProgress.setProgressDrawable(drawable);
tv = (TextView) findViewById(R.id.tv);
new Thread(new Runnable() {
@Override
public void run() {
while (pStatus < 100) {
pStatus += 1;
handler.post(new Runnable() {
@Override
public void run() {
mProgress.setProgress(pStatus);
tv.setText(pStatus + "%");
}
});
try {
Thread.sleep(8);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}).start();
}
}
如果您想制作水平进度条,请访问此链接,其中包含许多有价值的示例和源代码:
http://www.skholingua.com/android-basic/user-interface/form-widgets/progressbar