textview1.setTextColor(Color.argb(255, 0, 255, 0)); //文字透明度
控件设为半透明:
控件名.getBackground().setAlpha(int); int 在0-255之间
package net.android.alpha; import android.widget.TextView; import android.os.Bundle; import android.view.ViewGroup; import android.app.Activity; import android.graphics.Color; import android.widget.LinearLayout; public class touming extends Activity { final int WRAP_CONTENT = ViewGroup.LayoutParams.WRAP_CONTENT; public void onCreate(Bundle icicle) { super.onCreate(icicle); LinearLayout linearLayout = new LinearLayout(this); linearLayout.setOrientation(LinearLayout.VERTICAL); setContentView(linearLayout); TextView textview1 = new TextView(this); textview1.setText("全部不透明=255"); //textview1.setBackgroundColor(Color.argb(255, 0, 255, 0)); //背景透明度 textview1.setTextColor(Color.argb(255, 0, 255, 0)); //文字透明度 linearLayout.addView(textview1, new LinearLayout.LayoutParams(WRAP_CONTENT, WRAP_CONTENT)); TextView textview2 = new TextView(this); textview2.setText("部分透分155"); textview2.setBackgroundColor(Color.argb(155, 0, 255, 0)); //背景透明度 textview2.setTextColor(Color.argb(155, 0, 255, 0)); //文字透明度 linearLayout.addView(textview2, new LinearLayout.LayoutParams(WRAP_CONTENT, WRAP_CONTENT)); TextView textview3 = new TextView(this); textview3.setText("部分透明55"); textview3.setBackgroundColor(Color.argb(55, 0, 255, 0)); ///背景透明度 textview3.setTextColor(Color.argb(55, 0, 255, 0)); //文字透明度 linearLayout.addView(textview3, new LinearLayout.LayoutParams(WRAP_CONTENT, WRAP_CONTENT)); TextView textview4 = new TextView(this); textview4.setText("全部透明0"); //textview4.setBackgroundColor(Color.argb(0, 0, 255, 0)); //背景透明度 textview4.setTextColor(Color.argb(0, 0, 255, 0)); //文字透明度 linearLayout.addView(textview4, new LinearLayout.LayoutParams(WRAP_CONTENT, WRAP_CONTENT)); } }