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[转载]设置TabHost的透明标签-Android开发问题解答-eoe Android开发者社区_Android开发论坛.
图1 
图2 
理想的情况应该是图1的效果,但是发现background中使用png图片默认还是会有黑色底色,请问应该如何达到透明的效果
布局如下
<!--?xml version="1.0" encoding="utf-8"?--> |
代码如下
import android.app.TabActivity;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.view.View.OnFocusChangeListener;import android.widget.RadioButton;import android.widget.RadioGroup;import android.widget.RadioGroup.OnCheckedChangeListener;import android.widget.TabHost; public class TabHostActivity extends TabActivity implements OnCheckedChangeListener, OnFocusChangeListener{ private TabHost tabHost; private RadioGroup tabs; private RadioButton btn_login, btn_register, btn_forgot; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.tabhost_layout); tabs = (RadioGroup) findViewById(R.id.main_tabs); btn_login = (RadioButton) findViewById(R.id.tab_radio01); btn_register = (RadioButton) findViewById(R.id.tab_radio02); btn_forgot = (RadioButton) findViewById(R.id.tab_radio03); btn_login.setOnFocusChangeListener(this); btn_register.setOnFocusChangeListener(this); btn_forgot.setOnFocusChangeListener(this); tabs.setOnCheckedChangeListener(this); tabHost = getTabHost(); tabHost.addTab(tabHost .newTabSpec("login") .setIndicator(getResources().getString(R.string.login), getResources().getDrawable(R.drawable.login)) .setContent(new Intent(this, LoginActivity.class))); tabHost.addTab(tabHost .newTabSpec("register") .setIndicator(getResources().getString(R.string.register), getResources().getDrawable(R.drawable.register)) .setContent(new Intent(this, RegisterActivity.class))); tabHost.addTab(tabHost .newTabSpec("forgot") .setIndicator(getResources().getString(R.string.forgotPass), getResources().getDrawable(R.drawable.forgot_password)) .setContent(new Intent(this, ForgotPassActivity.class))); } @Override public void onFocusChange(View v, boolean hasFocus) { switch (v.getId()) { case R.id.tab_radio01: break; case R.id.tab_radio02: break; case R.id.tab_radio03: break; } } @Override public void onCheckedChanged(RadioGroup group, int checkedId) { switch (checkedId) { case R.id.tab_radio01: tabHost.setCurrentTabByTag("login"); break; case R.id.tab_radio02: tabHost.setCurrentTabByTag("register"); break; case R.id.tab_radio03: tabHost.setCurrentTabByTag("forgot"); break; } }} |
