本文实例为大家分享了Android通过SeekBar调节布局背景颜色的具体代码，供大家参考，具体内容如下
用RGB设置布局背景颜色的方法
relativeLayout.setBackgroundColor(Color.rgb(r,g,b));
布局文件
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:id="@+id/RelativeLayout" tools:context="com.example.konghao.adjustcolor.MainActivity"> <LinearLayout android:layout_marginLeft="30dp" android:layout_marginRight="30dp" android:layout_marginTop="50dp" android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical"> <TextView android:id="@+id/int_R" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <SeekBar android:id="@+id/R" android:layout_marginTop="10dp" android:layout_width="match_parent" android:layout_height="wrap_content" /> <TextView android:id="@+id/int_G" android:layout_marginTop="30dp" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <SeekBar android:id="@+id/G" android:layout_marginTop="10dp" android:layout_width="match_parent" android:layout_height="wrap_content" /> <TextView android:id="@+id/int_B" android:layout_marginTop="30dp" android:layout_width="wrap_content" android:layout_height="wrap_content" /> <SeekBar android:id="@+id/B" android:layout_marginTop="10dp" android:layout_width="match_parent" android:layout_height="wrap_content" /> </LinearLayout> </RelativeLayout>
Main活动
public class MainActivity extends Activity {
private RelativeLayout relativeLayout;
private SeekBar color_R,color_G,color_B;
private static int r = 0,g = 0,b = 0;
private TextView int_r,int_g,int_b;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
relativeLayout = (RelativeLayout) findViewById(R.id.RelativeLayout);
color_R = (SeekBar) findViewById(R.id.R);
color_G = (SeekBar) findViewById(R.id.G);
color_B = (SeekBar) findViewById(R.id.B);
int_r = (TextView) findViewById(R.id.int_R);
int_g = (TextView) findViewById(R.id.int_G);
int_b = (TextView) findViewById(R.id.int_B);
color_R.setMax(255);
color_G.setMax(255);
color_B.setMax(255);
color_B.setProgress(0);
color_G.setProgress(0);
color_B.setProgress(0);
color_R.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar,int progress, boolean fromUser) {
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
r = seekBar.getProgress();
String int_color_r = "R:" + String.valueOf(r);
int_r.setText(int_color_r);
relativeLayout.setBackgroundColor(Color.rgb(r,g,b));
}
});
color_G.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int i, boolean fromUser) {
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
g = seekBar.getProgress();
String int_color_g = "G:" + String.valueOf(g);
int_g.setText(int_color_g);
relativeLayout.setBackgroundColor(Color.rgb(r,g,b));
}
});
color_B.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
@Override
public void onProgressChanged(SeekBar seekBar, int i, boolean fromUser) {
}
@Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
@Override
public void onStopTrackingTouch(SeekBar seekBar) {
b = seekBar.getProgress();
String int_color_b = "B:" + String.valueOf(b);
int_b.setText(int_color_b);
relativeLayout.setBackgroundColor(Color.rgb(r,g,b));
}
});
}
}
效果
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。
