Android通过SeekBar调节布局背景颜色
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
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脚本之家。
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