Android開發-DesignDemo-AndroidStudio(九)FloatingActionButton(1)

簡單對比FloatingActionButton和ImageButton的區別：

左邊是ImageButton，右邊是FloatingActionButton：

activity_main.xml:

package com.iwanghang.coordinatordemo;

import android.support.design.widget.CoordinatorLayout;
import android.support.design.widget.Snackbar;
import android.support.design.widget.SwipeDismissBehavior;
import android.support.v4.view.ViewCompat;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.widget.TextView;

import java.util.ArrayList;
import java.util.List;
import java.util.Locale;

public class MainActivity extends AppCompatActivity {
    private TextView textView_1;
    private TextView textView_2;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        //textView_1 = (TextView) findViewById(R.id.textView_1);
        textView_2 = (TextView) findViewById(R.id.textView_2);

        // 手動強轉控件類型
        //CoordinatorLayout.LayoutParams params_1 =
        //        (CoordinatorLayout.LayoutParams) textView_1.getLayoutParams();
        CoordinatorLayout.LayoutParams params_2 =
                (CoordinatorLayout.LayoutParams) textView_2.getLayoutParams();

        // setBehavior 設置控件的行為
        //params.setBehavior();
        // SwipeDismissBehavior 實例化滑動刪除行為
        SwipeDismissBehavior behavior = new SwipeDismissBehavior<>();

        // 滑動刪除行為監聽
        behavior.setListener(new SwipeDismissBehavior.OnDismissListener() {
            @Override
            public void onDismiss(View view) { // 當控件消失
                // 在設置控件隱藏之前，其實控件只是透明，還可以滑動回來
                view.setVisibility(View.GONE); // 設置控件隱藏

                Snackbar.make(view,"刪除控件",Snackbar.LENGTH_LONG)
                        .setAction("撤銷", new View.OnClickListener() {
                            @Override
                            public void onClick(View view) {
                                textView_2.setVisibility(View.VISIBLE); // 設置控件顯示
                                ViewCompat.animate(textView_2).alpha(1).start();
                            }
                        }).show();
            }

            @Override
            public void onDragStateChanged(int state) { // 當控件停止

            }
        });

        // 把滑動刪除行為設置到textView控件上
        params_2.setBehavior(behavior);











        RecyclerView recycler_1 = (RecyclerView) findViewById(R.id.recycler_1);
        List list = new ArrayList<>();
        for (int i = 0; i <100 ; i++) {
            list.add(String.format(Locale.CHINA,"第%03d條數據",i+1));
        }
        recycler_1.setAdapter(new MyAdapter(this,list));

        MyBehavior myBehavior = new MyBehavior();
        //params_1.setBehavior(myBehavior);


        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);





        // 右下角懸浮按鈕 點擊事件監聽 FloatingActionButton
        findViewById(R.id.fab).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Snackbar.make(view,"FloatingActionButton Click",Snackbar.LENGTH_LONG).show();
            }
        });
        // 左下角懸浮鈕 點擊事件監聽 ImageButton
        findViewById(R.id.imageBtn).setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Snackbar.make(view,"ImageButton Click",Snackbar.LENGTH_LONG).show();
            }
        });



    }
}