Android 按钮背景颜色

Android 按钮背景颜色

xml
    android:id="@+id/myButton"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Click me"
    android:background="@color/red" />

xml
    #FF0000

java
Button myButton = findViewById(R.id.myButton);
myButton.setBackgroundColor(Color.RED);

xml
    android:id="@+id/myButton"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Click me"
    android:background="@color/red" />

java
Button myButton = findViewById(R.id.myButton);
myButton.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        Random random = new Random();
        int color = Color.argb(255, random.nextInt(256), random.nextInt(256), random.nextInt(256));
        myButton.setBackgroundColor(color);
    }
});