가로 막대 프로그레스바

ㅇ res/drawable/progressbar.xml

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

<layer-list
xmlns:android="http://schemas.android.com/apk/res/android">
<item android:id="@android:id/background">
    <shape>
        <corners android:radius="60dp"/>
        <solid android:color="#000000"/>
    </shape>
</item>
<item android:id="@android:id/progress">
    <clip>
        <shape>
            <corners android:radius="60dp"/>
            <solid android:color="#ffffff"/>
        </shape>
    </clip>
</item>
</layer-list>

ㅇ res/layout/activity_main.xml

<RelativeLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_centerInParent="true">

    <ProgressBar
        android:id="@+id/progressBar"
        android:layout_marginTop="100dp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:progressDrawable="@drawable/progressbar"
        style="?android:attr/progressBarStyleHorizontal"/>

    <TextView
        android:id="@+id/progress_msg"
        android:layout_marginTop="15dp"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_below="@id/progressBar"
        android:gravity="center_horizontal"
        android:text="다운로드"
        android:textColor="#000000" />

</RelativeLayout>

ㅇ MainActivity.java

private ProgressBar mProgressBar;
private TextView mTextMsg;

private Thread mThread;

private Handler mHandler = new Handler(){
    @Override
    public void handleMessage(Message msg) {
        super.handleMessage(msg);
        Log.i(TAG, "msg : "+msg.what);

        mProgressBar.setProgress(msg.what);
        mTextMsg.setText(msg.what+"%");
    }
};

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        mProgressBar = findViewById(R.id.progressBar);
        mTextMsg =findViewById(R.id.progress_msg);

        mThread = new Thread(new Runnable() {
            @Override
            public void run() {
                    for (int i = 0; i <= 100; i++) {
                        try {
                            Thread.sleep(10);
                        } catch (InterruptedException e) {
                            e.printStackTrace();
                        }

                        Message message = mHandler.obtainMessage();
                        message.what = i;

                        mHandler.sendMessage(message);
                    }

            }
        });
        mThread.start();

new MyAsyncTask().execute();
    }

* Thread + Handler == AsyncTask()

private class MyAsyncTask extends AsyncTask<String,Integer,Boolean>{

    @Override
    protected Boolean doInBackground(String... strings) {
        for (int i = 0; i <= 100; i++) {
            try {
                Thread.sleep(10);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            publishProgress(i); // => onProgressUpdate() call
        }
        return true;
    }

    @Override
    protected void onProgressUpdate(Integer... values) {
        int i = values[0];
        mProgressBar.setProgress(i);
        mTextMsg.setText(i+"%");
    }

    @Override
    protected void onPostExecute(Boolean aBoolean) {
        if(aBoolean!=null && aBoolean){
            mProgressBar.setProgress(100);
            mTextMsg.setText("100%");
        }
    }
}