如何在Android DrawerLayout左上角添加3行图标
如何在Android DrawerLayout左上角添加3行图标
提问于 2017-01-19 18:23:42
我正在写新的应用程序，我想把我的drawerLayout图标的外观改为典型的3条水平线。如果我单击它，Icon应该会将其外观更改为箭头。现在我一直都有一个箭头图标。
打包pl.nieruchalski.scrumfamily；
import android.app.Activity;
import android.content.res.Configuration;
import android.os.PersistableBundle;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.os.Bundle;
import android.view.MenuItem;
import android.view.View;
public class MainActivity extends Activity {
private ActionBarDrawerToggle drawerToggle;
private DrawerLayout drawerLayout;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
drawerLayout = (DrawerLayout) findViewById(R.id.drawerLayout);
drawerToggle = new ActionBarDrawerToggle(this, drawerLayout, R.string.openDrawer, R.string.closeDrawer);
drawerLayout.addDrawerListener(drawerToggle);
getActionBar().setDisplayHomeAsUpEnabled(true);
getActionBar().setHomeButtonEnabled(true);
}
@Override
public void onPostCreate(Bundle savedInstanceState, PersistableBundle persistentState) {
super.onPostCreate(savedInstanceState, persistentState);
drawerToggle.syncState();
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
drawerToggle.onConfigurationChanged(newConfig);
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
if(drawerToggle.onOptionsItemSelected(item))
return true;
return super.onOptionsItemSelected(item);
}
}回答 2
Stack Overflow用户
回答已采纳
发布于 2017-01-20 15:52:39
您重写了错误的onPostCreate()方法，因此drawerToggle.syncState();永远不会被调用，切换也不会将自己的图标放在ActionBar上。
您只需使用Bundle参数重写onPostCreate()方法，而不使用PersistableBundle参数。
@Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
drawerToggle.syncState();
}Stack Overflow用户
发布于 2017-01-19 18:42:27
在onCreate()中试用
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
getSupportActionBar().setDefaultDisplayHomeAsUpEnabled(false);
drawerToggle.setDrawerIndicatorEnabled(false);
drawerToggle.setHomeAsUpIndicator(R.drawable.ic_custom_drawer_icon); //set your horizontal line icon
drawerToggle.setToolbarNavigationClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
DrawerLayout drawerLayout = (DrawerLayout) findViewById(R.id.drawerLayout);
if (drawerLayout.isDrawerOpen(GravityCompat.START)) {
drawerLayout.closeDrawer(GravityCompat.START);
drawerToggle.setHomeAsUpIndicator(R.drawable.ic_custom_drawer_icon); // drawer closed-reset icon
} else {
//open drawer
drawerLayout.openDrawer(GravityCompat.START);
drawerToggle.setHomeAsUpIndicator(R.drawable.ic_new_icon); // set your back icon
}
}
});页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/41749028
复制相关文章
相似问题
腾讯云开发者
