Android項目中自定義頂部標題欄

package org.gaochun.widget;

import org.gaochun.ui.R;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup.LayoutParams;
import android.widget.Button;
import android.widget.FrameLayout;
import android.widget.TextView;
import android.widget.Toast;


/**
 * @author gao_chun
 * 自定義標題欄
 */
public class TitleActivity extends Activity implements 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();   //加載 activity_title 布局 ，並獲取標題及兩側按鈕
    }


    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);
    }

    /**
     * 是否顯示返回按鈕
     * @param backwardResid  文字
     * @param show  true則顯示
     */
    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
    }

    /**
     * 提供是否顯示提交按鈕
     * @param forwardResId  文字
     * @param show  true則顯示
     */
    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
    }

    /**
     * 返回按鈕點擊後觸發
     * @param backwardView
     */
    protected void onBackward(View backwardView) {
        Toast.makeText(this, 點擊返回，可在此處調用finish(), Toast.LENGTH_LONG).show();
        //finish();
    }

    /**
     * 提交按鈕點擊後觸發
     * @param forwardView
     */
    protected void onForward(View forwardView) {
        Toast.makeText(this, 點擊提交, Toast.LENGTH_LONG).show();
    }


    //設置標題內容
    @Override
    public void setTitle(int titleId) {
        mTitleTextView.setText(titleId);
    }

    //設置標題內容
    @Override
    public void setTitle(CharSequence title) {
        mTitleTextView.setText(title);
    }

    //設置標題文字顏色
    @Override
    public void setTitleColor(int textColor) {
        mTitleTextView.setTextColor(textColor);
    }


    //取出FrameLayout並調用父類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, LayoutParams params) {
        mContentLayout.removeAllViews();
        mContentLayout.addView(view, params);
        onContentChanged();
    }


    /* (non-Javadoc)
     * @see android.view.View.OnClickListener#onClick(android.view.View)
     * 按鈕點擊調用的方法
     */
    @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;
        }
    }
}