Android Toast 工具類調用

• BaseActivity.java

package news.zxy.com.zhbj74;

import android.app.Activity;
import android.view.Gravity;
import android.widget.Toast;

/**
 * Created by Administrator on 2016/6/17.
 */
//在屏幕中央顯示Toast,封裝成工具類
public class BaseActivity extends Activity {
    public void showToast(CharSequence text) {
        Toast toast = Toast.makeText(this, text, Toast.LENGTH_SHORT);
        toast.setGravity(Gravity.CENTER, 0, 0);
        toast.show();
    }

}

• MainActivity .java

package news.zxy.com.zhbj74;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;

public class MainActivity extends BaseActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        showToast("繼承BaseActivity後，這裏就可以簡單調用Toast了！");
    }
}