Android Custom Universal Title Bar CustomTitleBar
- 2021-10-24 23:54:28
- OfStack
In this article, we share the specific code of Android custom general title bar for your reference. The specific content is as follows/p >
1 Customize 1 public_titlebar. xml file
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/rootView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<ImageView
android:id="@+id/ivLeft"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/z"/>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_weight="1">
<TextView
android:id="@+id/tvTitle"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="tvTitle"/>
<TextView
android:id="@+id/tvRight"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"
android:text="tvRight"/>
</LinearLayout>
</LinearLayout>
2. Create a new attrs. xml under the values folder
<?xml version="1.0" encoding="utf-8"?>
<resources>
<declare-styleable name="CustomerTitleBar">
<attr name="left_image" format="reference"></attr>
<attr name="center_text" format="string"></attr>
<attr name="center_text_color" format="color"></attr>
<attr name="center_text_size" format="dimension"></attr>
</declare-styleable>
</resources>
3. Custom CustomerTitleBar class inherits LinearLayout, unified 1 page title bar, including interface callback in the project
public class CustomerTitleBar extends LinearLayout {
private LinearLayout rootView;
private ImageView ivLeft;
private TextView tvTitle;
private TextView tvRight;
//3. Declare a callback object
private CustomerClick leftClick;
/**
* @param context
*/
// Directly in the code new1 A Custom View Instance , Will call the first 1 Constructor
public CustomerTitleBar(Context context) {
this(context,null);
}
// In xml Called in the layout file Custom View At the time of , Will call the first 2 Constructor
public CustomerTitleBar(Context context,AttributeSet attrs) {
this(context, attrs,-1);
}
// In xml Called in the layout file Custom View, And Custom View When there are custom attributes in the tag , What is called here is the first 2 Constructor .
public CustomerTitleBar(Context context,AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
init(context);
initAttrs(context,attrs);
initLister();
}
private void init(Context context) {
rootView= (LinearLayout) View.inflate(context,R.layout.layout_customer_title_bar,this);
ivLeft=rootView.findViewById(R.id.ivLeft);
tvTitle=rootView.findViewById(R.id.tvTitle);
tvRight=rootView.findViewById(R.id.tvRight);
}
private void initAttrs(Context context, AttributeSet attrs) {
TypedArray typedArray=context.obtainStyledAttributes(attrs,R.styleable.CustomerTitleBar);
Drawable drawable=typedArray.getDrawable(R.styleable.CustomerTitleBar_left_image);
if (drawable!=null){
ivLeft.setImageDrawable(drawable);
}
CharSequence text = typedArray.getText(R.styleable.CustomerTitleBar_center_text);
if (!TextUtils.isEmpty(text)) {
tvTitle.setText(text);
}
int color = typedArray.getColor(R.styleable.CustomerTitleBar_center_text_color, -1);
if (color != -1) {
tvTitle.setTextColor(color);
}
float dimension = typedArray.getDimension(R.styleable.CustomerTitleBar_center_text_size, 0f);
tvTitle.setTextSize(dimension);
}
private void initLister() {
ivLeft.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
//5. Using interface callbacks
if (leftClick!=null){
leftClick.onLefClick(v);
}
}
});
}
//4 That provides the callback object's set Method
public void setLeftClick(CustomerClick leftClick) {
this.leftClick = leftClick;
}
//1. Define callback interface
interface CustomerClick{
void onLefClick(View view);
}
}
4. References in layout files
<com.cn.jyx.customertitlebar.CustomerTitleBar
android:id="@+id/ctTitle"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
customer:center_text=" Spit bubbles "
customer:center_text_color="#ff00ff"
customer:center_text_size="20sp" />
5. Usage in Activity
public class MainActivity extends AppCompatActivity {
private CustomerTitleBar ctTitle;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ctTitle=findViewById(R.id.ctTitle);
//6 , using
ctTitle.setLeftClick(new CustomerTitleBar.CustomerClick() {
@Override
public void onLefClick(View view) {
Toast.makeText(MainActivity.this," Spit bubbles ",Toast.LENGTH_LONG).show();
}
});
}
}