本文小编为大家详细介绍“Android怎么通过SeekBar调节布局背景颜色”，内容详细，步骤清晰，细节处理妥当，希望这篇“Android怎么通过SeekBar调节布局背景颜色”文章能帮助大家解决疑惑，下面跟着小编的思路慢慢深入，一起来学习新知识吧。
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
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