package com.example.androidimageview;
import android.support.v7.app.ActionBarActivity;
import android.graphics.PorterDuff;
import android.graphics.PorterDuff.Mode;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.SeekBar;
import android.widget.SeekBar.OnSeekBarChangeListener;
import android.widget.Spinner;
import android.widget.TextView;
public class MainActivity extends ActionBarActivity {
TextView textTitle;
ImageView image1;
SeekBar barR, barG, barB, barAlpha;
Spinner spinnerMode;
Mode[] modeValues;
String[] modeName;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
textTitle = (TextView)findViewById(R.id.title);
image1 = (ImageView)findViewById(R.id.image1);
barR = (SeekBar)findViewById(R.id.r);
barG = (SeekBar)findViewById(R.id.g);
barB = (SeekBar)findViewById(R.id.b);
barAlpha = (SeekBar)findViewById(R.id.alpha);
barR.setOnSeekBarChangeListener(myOnSeekBarChangeListener);
barG.setOnSeekBarChangeListener(myOnSeekBarChangeListener);
barB.setOnSeekBarChangeListener(myOnSeekBarChangeListener);
barAlpha.setOnSeekBarChangeListener(myOnSeekBarChangeListener);
//default color
int defaultColor = barAlpha.getProgress() * 0x1000000
+ barR.getProgress() * 0x10000
+ barG.getProgress() * 0x100
+ barB.getProgress();
image1.setColorFilter(defaultColor, Mode.MULTIPLY);
prepareMode();
spinnerMode = (Spinner) findViewById(R.id.selmode);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,
android.R.layout.simple_spinner_item, modeName);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
spinnerMode.setAdapter(adapter);
spinnerMode.setOnItemSelectedListener(myOnItemSelectedListener);
}
OnItemSelectedListener myOnItemSelectedListener = new OnItemSelectedListener(){
@Override
public void onItemSelected(AdapterView<?> parent, View view,
int position, long id) {
updateMode();
}
@Override
public void onNothingSelected(AdapterView<?> parent) {}};
OnSeekBarChangeListener myOnSeekBarChangeListener = new OnSeekBarChangeListener(){
@Override
public void onProgressChanged(SeekBar seekBar, int progress,
boolean fromUser) {
updateMode();
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {}
};
private void updateMode(){
int selectedModePos = spinnerMode.getSelectedItemPosition();
Mode selectedMode = modeValues[selectedModePos];
//Colorize ImageView
int newColor = barAlpha.getProgress() * 0x1000000
+ barR.getProgress() * 0x10000
+ barG.getProgress() * 0x100
+ barB.getProgress();
image1.setColorFilter(newColor, selectedMode);
}
private void prepareMode(){
modeValues = PorterDuff.Mode.values();
modeName = new String[modeValues.length];
for(int i=0; i<modeValues.length; i++){
modeName[i] = modeValues[i].name();
}
}
}
<LinearLayout 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:orientation="vertical"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.androidimageview.MainActivity" >
<TextView
android:id="@+id/title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:autoLink="web"
android:text="http://android-er.blogspot.com/"
android:textStyle="bold" />
<Spinner
android:id="@+id/selmode"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
<SeekBar
android:id="@+id/r"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:max="255"
android:progress="255" />
<SeekBar
android:id="@+id/g"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:max="255"
android:progress="255" />
<SeekBar
android:id="@+id/b"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:max="255"
android:progress="255" />
<SeekBar
android:id="@+id/alpha"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:max="255"
android:progress="255" />
<ImageView
android:id="@+id/image1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="@drawable/ic_launcher" />
</LinearLayout>
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