Tuesday, September 1, 2015

How to create a vertical ProgressBar in Android

activity_main.xml 

<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/rl"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="10dp"
    tools:context=".MainActivity"
    android:background="#F0F1F2"
    >
    <TextView
        android:id="@+id/tv"
        android:layout_width="150dp"
        android:layout_height="wrap_content"
        android:fontFamily="sans-serif-condensed"
        android:textColor="#676a6b"
        android:gravity="center"
        android:textAlignment="gravity"
        />
    <ProgressBar
        android:id="@+id/pb"
        android:layout_width="150dp"
        android:layout_height="150dp"
        style="@android:style/Widget.ProgressBar.Horizontal"
        android:progressDrawable="@drawable/progressbar_states"
        android:layout_below="@id/tv"
        />
    <Button
        android:id="@+id/btn"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Start Operation"
        android:layout_below="@id/pb"
        android:layout_marginTop="10dp"
        />
</RelativeLayout>
res/drawable/progressbar_states.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">
        <rotate
            android:fromDegrees="90"
            android:toDegrees="90"
            >
            <shape
                android:shape="line">
                <stroke
                    android:width="5dp"
                    android:color="#d0d4d7"
                    />
            </shape>
        </rotate>
    </item>
    <item android:id="@android:id/progress">
        <clip android:clipOrientation="vertical" android:gravity="bottom">
            <rotate
                android:fromDegrees="90"
                android:toDegrees="90"
                >
                <shape
                    android:shape="line">
                    <stroke
                        android:width="5dp"
                        android:color="#ff0500"
                        />
                </shape>
            </rotate>
        </clip>
    </item>
</layer-list>
MainActivity.java 

package com.cfsuman.me.androidcodesnippets;

import android.os.Bundle;
import android.app.Activity;
import android.view.View;
import android.widget.Button;
import android.widget.RelativeLayout;
import android.widget.TextView;
import android.widget.ProgressBar;
import android.os.Handler;


public class MainActivity extends Activity {
    private int progressStatus = 0;
    private Handler handler = new Handler();

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

        // Get the widgets reference from XML layout
        final RelativeLayout rl = (RelativeLayout) findViewById(R.id.rl);
        final Button btn = (Button) findViewById(R.id.btn);
        final TextView tv = (TextView) findViewById(R.id.tv);
        final ProgressBar pb = (ProgressBar) findViewById(R.id.pb);

        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                // Set the progress status zero on each button click
                progressStatus = 0;

                // Start the lengthy operation in a background thread
                new Thread(new Runnable() {
                    @Override
                    public void run() {

                        while(progressStatus < 100){
                            // Update the progress status
                            progressStatus +=1;

                            // Try to sleep the thread for 20 milliseconds
                            try{
                                Thread.sleep(20);
                            }catch(InterruptedException e){
                                e.printStackTrace();
                            }

                            // Update the progress bar
                            handler.post(new Runnable() {
                                @Override
                                public void run() {
                                    pb.setProgress(progressStatus);
                                    // Show the progress on TextView
                                    tv.setText(progressStatus+"");
                                    // If task execution completed
                                    if(progressStatus == 100){
                                        // Set a message of completion
                                        tv.setText("Operation completed.");
                                    }
                                }
                            });
                        }
                    }
                }).start(); // Start the operation
            }
        });
    }
}




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