setbackground出錯 提示讓改成setbackgrounddrawable

topbar.java

package com.example.mytopbar;

import android.content.Context;

import android.content.res.TypedArray;

import android.graphics.drawable.Drawable;

import android.util.AttributeSet;

import android.view.Gravity;

import android.view.View;

import android.view.ViewGroup;

import android.widget.Button;

import android.widget.RelativeLayout;

import android.widget.TextView;

import android.widget.Toast;

public class Topbar extends RelativeLayout {

private Button leftButton, rightButton;

private TextView tvTitle;

private int leftTextColor;

private Drawable leftBackground;

private String leftText;

private int rightTextColor;

private Drawable rightBackground;

private String rightText;

private float tltleTextSize;

private int titleTextColor;

private String title;

private LayoutParams leftParams, rightParams, titleParams;

private topbarClickListener listener;

public interface topbarClickListener {

public void leftClick();

public void rightClick();

}

public void setOnTopbarClickListener(topbarClickListener listener) {

this.listener = listener;

}

public Topbar(Context context, AttributeSet attrs) {

super(context, attrs);

TypedArray ta = context.obtainStyledAttributes(attrs,

R.styleable.Topbar);

leftTextColor = ta.getColor(R.styleable.Topbar_leftTextColor, 0);

leftBackground = ta.getDrawable(R.styleable.Topbar_leftBackground);

leftText = ta.getString(R.styleable.Topbar_leftText);

rightTextColor = ta.getColor(R.styleable.Topbar_rightTextColor, 0);

rightBackground = ta.getDrawable(R.styleable.Topbar_rightBackground);

rightText = ta.getString(R.styleable.Topbar_rightText);

tltleTextSize = ta.getDimension(R.styleable.Topbar_titleTextSize, 0);

titleTextColor = ta.getColor(R.styleable.Topbar_titleTextColor, 0);

title = ta.getString(R.styleable.Topbar_title);

ta.recycle();

leftButton = new Button(context);

rightButton = new Button(context);

tvTitle = new TextView(context);

leftButton.setTextColor(leftTextColor);

leftButton.setBackground(leftBackground);

leftButton.setText(leftText);

rightButton.setTextColor(rightTextColor);

rightButton.setBackground(rightBackground);

rightButton.setText(rightText);

tvTitle.setTextColor(titleTextColor);

tvTitle.setTextSize(tltleTextSize);

tvTitle.setText(title);

tvTitle.setGravity(Gravity.CENTER);

setBackgroundColor(0xff59563);

leftParams = new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,

LayoutParams.WRAP_CONTENT);

rightParams.addRule(RelativeLayout.ALIGN_PARENT_LEFT, TRUE);

addView(leftButton, leftParams);

rightParams = new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,

LayoutParams.WRAP_CONTENT);

rightParams.addRule(RelativeLayout.ALIGN_PARENT_RIGHT, TRUE);

addView(rightButton, rightParams);

titleParams = new LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT,

LayoutParams.MATCH_PARENT);

titleParams.addRule(RelativeLayout.CENTER_IN_PARENT, TRUE);

addView(tvTitle, titleParams);

leftButton.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View arg0) {

listener.leftClick();

}

});

rightButton.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View arg0) {

// TODO Auto-generated method stub

listener.rightClick();

}

});

}

public void setLeftIsvisibable(boolean flag)

{

if(flag){

leftButton.setVisibility(View.VISIBLE);

}else{

leftButton.setVisibility(View.GONE);

}

}

}

• mainactivity.java

package com.example.mytopbar;

import android.app.Activity;

import android.os.Bundle;

import android.view.Menu;

import android.view.MenuItem;

import android.widget.Toast;

public class MainActivity extends Activity {

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

Topbar topbar=(Topbar)findViewById(R.id.topbar);

topbar.setOnTopbarClickListener(new Topbar.topbarClickListener() {

@Override

public void rightClick() {

// TODO Auto-generated method stub

Toast.makeText(MainActivity.this, "IMOOC_LEFT", Toast.LENGTH_SHORT).show();

}

@Override

public void leftClick() {

// TODO Auto-generated method stub

Toast.makeText(MainActivity.this, "IMOOC_RIGHT", Toast.LENGTH_SHORT).show();

}

});

}

//topbar.setLeftIsVisable(false);

}

• activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"

? ? xmlns:custom="http://schemas.android.com/apk/res/com.example.mytopbar"

? ? xmlns:tools="http://schemas.android.com/tools"

? ? android:layout_width="match_parent"

? ? android:layout_height="match_parent"

? ? android:padding="5dp"

? ? tools:context="com.example.mytopbar.MainActivity" >

? ? <com.example.mytopbar.Topbar

? ? ? ? android:id="@+id/topbar"

? ? ? ? android:layout_width="match_parent"

? ? ? ? android:layout_height="40dp"

? ? ? ? custom:leftBackground="@drawable/blue_button"

? ? ? ? custom:leftText="Back"

? ? ? ? custom:leftTextColor="#FFFFFF"

? ? ? ? custom:rightBackground="@drawable/blue_button"

? ? ? ? custom:rightText="More"

? ? ? ? custom:rightTextColor="#FFFFFF"

? ? ? ? custom:title="自定義標題"

? ? ? ? custom:titleTextColor="#123412"

? ? ? ? custom:titleTextSize="10sp" >

? ? </com.example.mytopbar.Topbar>

</RelativeLayout>

• atts.xml

  
  

<?xml version="1.0" encoding="utf-8"?>

<resources>

? ? <declare-styleable name="Topbar">

? ? ? ? <attr name="title" format="string" />

? ? ? ? <attr name="titleTextSize" format="dimension"></attr>

? ? ? ? <attr name="titleTextColor" format="color"></attr>

? ? ? ? <attr name="leftTextColor" format="color"></attr>

? ? ? ? <attr name="leftBackground" format="reference|color"></attr>

? ? ? ? <attr name="leftText" format="string"></attr>

? ? ? ? <attr name="rightTextColor" format="color"></attr>

? ? ? ? <attr name="rightBackground" format="reference|color"></attr>

? ? ? ? <attr name="rightText" format="string"></attr>

? ? </declare-styleable>

</resources>