Android Toast 自定义

<?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:gravity="center"
    android:background="@android:color/holo_green_light"
    android:orientation="vertical" >
    
    <TextView
        android:id="@+id/tv1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="text1"/>
    
     <TextView
        android:id="@+id/tv2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="text2"/>
</LinearLayout>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" 
    android:orientation="vertical">

    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:onClick="toast1"
        android:gravity="center"
        android:text="自定义Toast" />
    <Button
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:onClick="toast2"
        android:gravity="center"
        android:text="Toast.makeText" />

</LinearLayout>

public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }
    
    public void toast1(View v){
        //Toast通过构造方法创建，但是必须手动设置视图（setView、setDuration）
        Toast toast = new Toast(this);
        
        //动态加载布局
        View view = getLayoutInflater().inflate(R.layout.item_toast, null);
        TextView tv1 = (TextView) view.findViewById(R.id.tv1);
        TextView tv2 = (TextView) view.findViewById(R.id.tv2);
        
        //view.setBackgroundResource(R.drawable.ic_launcher);
        view.setBackgroundColor(Color.YELLOW);;
        tv1.setText("提示");
        tv2.setText("再按一次退出");
        
        toast.setView(view);
        //Gravity.FILL_HORIZONTAL显示水平铺满，offset代表x,y轴上的偏移
        toast.setGravity(Gravity.FILL_HORIZONTAL|Gravity.BOTTOM, 0, 500);
        toast.setDuration(Toast.LENGTH_SHORT);
        toast.show();
        
        
    }

    public void toast2(View v){
        Toast toast = Toast.makeText(this, "静态方法构建的Toast", Toast.LENGTH_SHORT);
        toast.setGravity(Gravity.LEFT, 0, 800);
        //只有静态方法构建的toast才能用setText()方法
        toast.setText("你好吗？");//打印你好吗？
        toast.setText(R.string.hello_world);//打印的是Hello world!
        toast.show();
    }
    
}