تغيير اللون برمجيا

جافا
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;

public class MainActivity extends AppCompatActivity {

    SharedPreferences shard ;
    @Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);

shard = getSharedPreferences("Setting", Context.MODE_PRIVATE);
int myStyle = shard.getInt("myStyle",0);
switch (myStyle){
case 0:
this.setTheme(R.style.AppTheme);
break;
case 1:
this.setTheme(R.style.AppTheme1);
break;
case 2:
this.setTheme(R.style.AppTheme2);
break;

}

        setContentView(R.layout.activity_main);

        findViewById(R.id.btn_0).setOnClickListener(new View.OnClickListener() {
            @Override
public void onClick(View view) {
                MyStyle(0);
}
});

         findViewById(R.id.btn_1).setOnClickListener(new View.OnClickListener() {
             @Override
public void onClick(View view) {
                 MyStyle(1);
}
});

        findViewById(R.id.btn_2).setOnClickListener(new View.OnClickListener() {
            @Override
public void onClick(View view) {
                MyStyle(2);
}
});

}

public void MyStyle(int myStyle){
        SharedPreferences.Editor editor = shard.edit();
        editor.putInt("myStyle",myStyle);
        editor.apply();

        finish();
        startActivity(new Intent(this, MainActivity.class));
}

}

































<TextView  
<TextView  
android:layout_width="wrap_content" 
android:layout_height="wrap_content"  
android:text="Hello World!" />

<Button  
android:layout_width="wrap_content" 
android:text="Theme 0" 
android:id="@+id/btn_0"
android:layout_height="wrap_content" />

<Button 
android:layout_width="wrap_content" 
android:text="Theme 1" 
android:id="@+id/btn_1"  
android:layout_height="wrap_content" />

<Button 
android:layout_width="wrap_content" 
android:text="Theme 2"
android:id="@+id/btn_2" 
android:layout_height="wrap_content" />





colors
colors


<?xml version="1.0" encoding="utf-8"?>
<resources>
    <color name="colorPrimary">#042aff</color>
    <color name="colorPrimaryDark">#303F9F</color>
    <color name="colorAccent">#FF4081</color>

    <color name="color_1">#009311</color>
    <color name="color_2">#015c0b</color>
    <color name="color_3">#f28d00</color>

    <color name="color_10">#8c00ff</color>
    <color name="color_20">#5900a1</color>
    <color name="color_30">#00b49f</color>
</resources>
















style
style

<resources>
<!-- Base application theme. -->

<style name="AppTheme" parent="Theme.AppCompat">
<!-- Customize your theme here. -->
<item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
    </style>
    <style name="AppTheme1" parent="Theme.AppCompat.Light">
<!-- Customize your theme here. -->

<item name="colorPrimary">@color/color_1</item>
        <item name="colorPrimaryDark">@color/color_2</item>
        <item name="colorAccent">@color/color_3</item>
    </style>
    <style name="AppTheme2" parent="Theme.AppCompat.Light">
<!-- Customize your theme here. -->

<item name="android:windowFullscreen">true</item>
        <item name="colorPrimary">@color/color_10</item>
        <item name="colorPrimaryDark">@color/color_20</item>
        <item name="colorAccent">@color/color_30</item>
    </style>

</resources>

<resources>

<!-- Base application theme. -->
<style name="AppTheme" parent="Theme.AppCompat">
<!-- Customize your theme here. -->
<item name="colorPrimary">@color/colorPrimary</item>
        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
        <item name="colorAccent">@color/colorAccent</item>
    </style>

    <style name="AppTheme1" parent="Theme.AppCompat.Light">

        <!-- Customize your theme here. -->

        <item name="colorPrimary">@color/color_1</item>

        <item name="colorPrimaryDark">@color/color_2</item>

        <item name="colorAccent">@color/color_3</item>

    </style>

    <style name="AppTheme2" parent="Theme.AppCompat.Light">

        <!-- Customize your theme here. -->

        <item name="android:windowFullscreen">true</item>

        <item name="colorPrimary">@color/color_10</item>

        <item name="colorPrimaryDark">@color/color_20</item>

        <item name="colorAccent">@color/color_30</item>

    </style>

</resources>