实现功能:
1)定义标题栏布局;
2)自定义TitleActivity控制标题栏按钮监听;
3)在TitleActivity中实现标题栏以下内容区域的切换;
4)新建Activity继承TitleActivity,实现重用标题栏效果。
实现步骤:
1. 新建一个工程,命名为TitleActivityDemo,Activity命名为TitleActivity;
2. 实现如图效果
分为:返回按钮、返回键、标题、提交
3. 设置返回按钮监听,并toast;
1)设置左上角箭头和返回文案区域点击事件的监听,toast提示如图文案;
2)设置提交文字的点击事件监听并toast提示“我是提交按钮”;
4). 实现标题栏下方内容区域;
5)编写MainActivity类继承TitleActivity,实现如图整体逻辑。
效果图:
功能代码:
1.首先定义标题栏 layout_title.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<!-- 首先定义标题栏 -->
<RelativeLayout
android:id="@+id/biaoti"
android:layout_width="match_parent"
android:layout_height="58dp"
android:background="#ed4255">
<TextView
android:text="标题栏"
android:id="@+id/text_title"
android:textSize="21sp"
android:textColor="#fff"
android:gravity="center"
android:singleLine="true"
android:ellipsize="marquee"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<Button
android:id="@+id/button_backward"
android:layout_width="70dp"
android:layout_height="match_parent"
android:drawableLeft="@drawable/back_arrow"
android:drawablePadding="6dp"
android:background="#ed4255"
android:ellipsize="end"
android:gravity="center"
android:onClick="onClick"
android:paddingLeft="5dp"
android:singleLine="true"
android:text="返回"
android:textColor="#ffffffff"
android:textSize="18dp"
android:visibility="invisible" />
<Button
android:id="@+id/button_forward"
android:layout_width="70dp"
android:layout_height="match_parent"
android:layout_alignParentRight="true"
android:drawablePadding="6dp"
android:background="#ed4255"
android:ellipsize="end"
android:gravity="center"
android:onClick="onClick"
android:paddingLeft="5dp"
android:singleLine="true"
android:text="提交"
android:textColor="#ffffffff"
android:textSize="18dp"
android:visibility="invisible" />
</RelativeLayout>
<TextView
android:text="Android"
android:textSize="28sp"
android:gravity="center"
android:layout_below="@+id/biaoti"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</RelativeLayout>
2.activity_title.xml 定义界面的标题栏和标题栏以下内容的布局,此处使用<include>
标签引入标题栏,且下方有定义一个空的FrameLayout的布局。
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<!-- 定义界面的标题栏和标题栏以下内容的布局
此处使用<include>标签引入标题栏,且下方有定义一个空的FrameLayout的布局。 -->
<include layout="@layout/layout_title"></include>
<FrameLayout
android:background="#fff"
android:id="@+id/layout_content"
android:layout_width="match_parent"
android:layout_height="match_parent">
</FrameLayout>
</LinearLayout>
3.TitleActivity.java 定义TitleActivity布局以及按钮
package com.bwie.title;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.FrameLayout;
import android.widget.TextView;
import android.widget.Toast;
/**
* 1)定义标题栏布局;
* 2)自定义TitleActivity控制标题栏按钮监听;
* 3)在TitleActivity中实现标题栏以下内容区域的切换;
*/
public class TitleActivity extends Activity implements View.OnClickListener {
//private RelativeLayout mLayoutTitleBar;
private TextView mTitleTextView;
private Button mBackwardbButton;
private Button mForwardButton;
private FrameLayout mContentLayout;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setupViews(); //加载 activity_title 布局 ,并获取标题及两侧按钮
}
private void setupViews() {
super.setContentView(R.layout.activity_title);
mTitleTextView = (TextView) findViewById(R.id.text_title);
mContentLayout = (FrameLayout) findViewById(R.id.layout_content);
mBackwardbButton = (Button) findViewById(R.id.button_backward);
mForwardButton = (Button) findViewById(R.id.button_forward);
}
/**
* 是否显示返回按钮
*
* @param backwardResid 文字
* @param show true则显示
*/
protected void showBackwardView(int backwardResid, boolean show) {
if (mBackwardbButton != null) {
if (show) {
mBackwardbButton.setText(backwardResid);
mBackwardbButton.setVisibility(View.VISIBLE);
} else {
mBackwardbButton.setVisibility(View.INVISIBLE);
}
} // else ignored
}
/**
* 提供是否显示提交按钮
*
* @param forwardResId 文字
* @param show true则显示
*/
protected void showForwardView(int forwardResId, boolean show) {
if (mForwardButton != null) {
if (show) {
mForwardButton.setVisibility(View.VISIBLE);
mForwardButton.setText(forwardResId);
} else {
mForwardButton.setVisibility(View.INVISIBLE);
}
} // else ignored
}
/**
* 返回按钮点击后触发
* @param backwardView
*/
protected void onBackward(View backwardView) {
Toast.makeText(this, "点击返回,可在此处调用finish()", Toast.LENGTH_SHORT).show();
//finish();
}
/**
* 提交按钮点击后触发
*
* @param forwardView
*/
protected void onForward(View forwardView) {
Toast.makeText(this, "我是提交按钮", Toast.LENGTH_SHORT).show();
}
//设置标题内容
@Override
public void setTitle(int titleId) {
mTitleTextView.setText(titleId);
}
//设置标题内容
@Override
public void setTitle(CharSequence title) {
mTitleTextView.setText(title);
}
//设置标题文字颜色
@Override
public void setTitleColor(int textColor) {
mTitleTextView.setTextColor(textColor);
}
//取出FrameLayout并调用父类removeAllViews()方法
@Override
public void setContentView(int layoutResID) {
mContentLayout.removeAllViews();
View.inflate(this, layoutResID, mContentLayout);
onContentChanged();
}
@Override
public void setContentView(View view) {
mContentLayout.removeAllViews();
mContentLayout.addView(view);
onContentChanged();
}
/* (non-Javadoc)
* @see android.app.Activity#setContentView(android.view.View, android.view.ViewGroup.LayoutParams)
*/
@Override
public void setContentView(View view, ViewGroup.LayoutParams params) {
mContentLayout.removeAllViews();
mContentLayout.addView(view, params);
onContentChanged();
}
/* (non-Javadoc)
* @see android.view.View.OnClickListener#onClick(android.view.View)
* 按钮点击调用的方法
*/
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.button_backward:
onBackward(v);
break;
case R.id.button_forward:
onForward(v);
break;
default:
break;
}
}
}
4. MainActivity中调用时直接 extends TitleActivity,使用在TitleActivity中定义的方法
package com.bwie.title;
import android.os.Bundle;
/**
* MainActivity中调用时直接 extends TitleActivity,使用在TitleActivity中定义的方法
*/
public class MainActivity extends TitleActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
setTitle("标题栏");
showBackwardView(R.string.text_back,true);
showForwardView(R.string.text_forward,true);
}
}
5. 在string.xml中写入以下代码:
<resources>
<string name="text_back">返回</string>
<string name="text_forward">提交</string>
</resources>
6.布局中需要引用的左箭头图片