无法以编程方式将进度设置到进度栏

Question

大家好，我面临进度条进度问题，我正在尝试更新进度条上的进度，但由于某种未知原因，它始终显示 100% 或更高的值。

以下是相关的 XML 和 Java 代码片段：

        <!-- Other Code -->
        <ProgressBar
            android:id="@+id/overall_score_progress_bar"
            style="@android:style/Widget.ProgressBar.Horizontal"
            android:layout_width="match_parent"
            android:layout_height="10dp"
            android:layout_gravity="bottom"
            android:max="100"
            android:layout_marginBottom="35dp"
            android:layout_marginStart="15dp"
            android:layout_marginEnd="15dp" />
            
 

public class FragmentResults extends Fragment {
    ProgressBar overallScoreProgressBar;
    int overall;

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        View view = inflater.inflate(R.layout.fragment_results, container, false);

        // Initialize ProgressBars
        overallScoreProgressBar = view.findViewById(R.id.overall_score_progress_bar);
       
        // Generate random scores
        generateRandomScores();

        // Set progress bar colors based on scores
        setProgressBarColor(overallScoreProgressBar, overall);
        
        return view;
    }

    // Method to calculate color based on progress
    private void setProgressBarColor(ProgressBar progressBar, int progress) {
        int color = getColorFromProgress(progress);
        progressBar.getProgressDrawable().setColorFilter(color, android.graphics.PorterDuff.Mode.SRC_IN);
    }

    // Method to determine the color based on the progress percentage
    private int getColorFromProgress(int progress) {
        if (progress <= 20) {
            return interpolateColor(Color.parseColor("#CC0000"), Color.parseColor("#FF6666"), progress / 20.0f);
        } else if (progress <= 40) {
            return interpolateColor(Color.parseColor("#E68A00"), Color.parseColor("#FFB266"), (progress - 20) / 20.0f);
        } else if (progress <= 60) {
            return interpolateColor(Color.parseColor("#CCCC00"), Color.parseColor("#FFFF66"), (progress - 40) / 20.0f);
        } else if (progress <= 80) {
            return interpolateColor(Color.parseColor("#009900"), Color.parseColor("#66FF66"), (progress - 60) / 20.0f);
        } else {
            return interpolateColor(Color.parseColor("#33CC33"), Color.parseColor("#99FF99"), (progress - 80) / 20.0f);
        }
    }

    // Helper method to interpolate between two colors
    private int interpolateColor(int colorStart, int colorEnd, float ratio) {
        int rStart = (colorStart >> 16) & 0xFF;
        int gStart = (colorStart >> 8) & 0xFF;
        int bStart = colorStart & 0xFF;

        int rEnd = (colorEnd >> 16) & 0xFF;
        int gEnd = (colorEnd >> 8) & 0xFF;
        int bEnd = colorEnd & 0xFF;

        int r = (int) (rStart + (rEnd - rStart) * ratio);
        int g = (int) (gStart + (gEnd - gStart) * ratio);
        int b = (int) (bStart + (bEnd - bStart) * ratio);

        return Color.rgb(r, g, b);
    }

    private void generateRandomScores() {
        Random random = new Random();

        // Generate random scores between 0 and 100
        overall = random.nextInt(101);
       
        // Other score generations

        // Set scores to TextViews and progress bars
        setScoresAndProgress();
    }

    private void setScoresAndProgress() {
        // Set the scores to TextViews
        overallScore.setText(String.valueOf(overall));
        
        // Set the progress bars
        overallScoreProgressBar.setProgress(overall);
    }
}

我将非常感谢任何解决此问题的解决方案！

Answer 1

函数

getProgressDrawable().setColorFilter()

设置进度条的颜色而不是进度。

这是一种仅更改进度量颜色的方法。

val progressBar = findViewById<ProgressBar>(R.id.progressBar)

// Retrieve the LayerDrawable from the progress bar
val progressDrawable = progressBar.progressDrawable as LayerDrawable

然后使用这个

progressDrawable

并改变它的颜色。

private void setProgressBarColor(ProgressBar progressBar, int progress) {

       int color = getColorFromProgress(progress);
       val progressLayer = progressDrawable.findDrawableByLayerId(android.R.id.progress)

       // Set the desired color for the progress (not affecting the background)
       val color = ContextCompat.getColor(this, R.color.your_color) 
       progressLayer.colorFilter = PorterDuffColorFilter(color, PorterDuff.Mode.SRC_IN)
    }