自定义TextView

来源：互联网发布：怎样集中注意力知乎编辑：程序博客网时间：2024/06/05 17:11
第一种方法，只是单纯的实现一个自定义TextView：public class MyView extends View {    private String text;    private int color;    private float textsize; public MyView(Context context) {        super(context);        init(null);    }    public MyView(Context context, @Nullable AttributeSet attrs){        super(context,attrs);        init(attrs);    }    private void init(@Nullable AttributeSet attrs) {        TypedArray typedArray = getContext().obtainStyledAttributes(attrs, R.styleable.MyView);        text = typedArray.getString(R.styleable.MyView_text);        color = typedArray.getColor(R.styleable.MyView_textcolor, 0xffffff);        textsize = typedArray.getDimension(R.styleable.MyView_textsize, 16);    }    @Override    protected void onDraw(Canvas canvas) {        super.onDraw(canvas);        Paint paint = new Paint();        paint.setAntiAlias(true);        paint.setColor(color);        paint.setTextSize(textsize);        canvas.drawText(text,300,300,paint);    }}在values中创建一个attrs<?xml version="1.0" encoding="utf-8"?><resources>    <declare-styleable name="MyView">        <attr name="text" format="string"></attr>        <attr name="textsize" format="dimension"></attr>        <attr name="textcolor" format="color"></attr>    </declare-styleable></resources>
 布局文件：
<View.MyView    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:layout_centerInParent="true"    app:text="申文静"    app:textcolor="#000000"    app:textsize="16sp"    />
第二种方法继承一个linerlayout,inflate一个布局进去
public class MyTextView extends LinearLayout {    private TextView biaoti;    private ImageView img;    public MyTextView(Context context) {        super(context);    }    public MyTextView(Context context, @Nullable AttributeSet attrs){        super(context,attrs);        init(context);    }    private void init(Context context) {        inflate(context, R.layout.second,this);        biaoti = (TextView) findViewById(R.id.biaoti);        img = (ImageView) findViewById(R.id.img);        img.setOnClickListener(new OnClickListener() {            @Override            public void onClick(View v) {                Toast.makeText(getContext(),"我在自定义view中被点击了",Toast.LENGTH_SHORT).show();            }        });    }}
布局文件;
<View.MyTextView    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:layout_centerInParent="true"></View.MyTextView>
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical"    android:gravity="center">    <TextView        android:id="@+id/biaoti"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="申文静"        android:textSize="20sp"        />    <ImageView        android:id="@+id/img"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:src="@mipmap/ic_launcher"/></LinearLayout>
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