Question

我尝试在活动开始时展示小吃店，但不能工作。

final Snackbar snackbar = Snackbar.make(???, "test", Snackbar.LENGTH_INDEFINITE);
            snackbar.setAction("dismiss", new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    snackbar.dismiss();
                }
            });

            snackbar.show();

Answer 1

完整工作演示

MainActivity

package pk.sohail.gallerytest.activity;

import android.content.Context;
import android.os.Bundle;
import android.support.design.widget.CoordinatorLayout;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.view.View;
import android.widget.ImageView;

import pk.sohail.gallerytest.R;

public class MainActivity extends AppCompatActivity {

    Context context;
    private CoordinatorLayout coordinatorLayout;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        context = this;

        coordinatorLayout = (CoordinatorLayout) findViewById(R.id
                .coordinatorLayout);

        ImageView image = (ImageView) findViewById(R.id.myimage);
        image.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(final View v) {

                Snackbar snackbar = Snackbar
                        .make(coordinatorLayout, "Message is deleted", Snackbar.LENGTH_LONG)
                        .setAction("UNDO", new View.OnClickListener() {
                            @Override
                            public void onClick(View view) {
                                Snackbar snackbar1 = Snackbar.make(coordinatorLayout, "Message is restored!", Snackbar.LENGTH_SHORT);
                                snackbar1.show();
                            }
                        });

                snackbar.show();
            }
        });
    }
}

<强> activity_main.xml中

<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/coordinatorLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <RelativeLayout
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:background="@android:color/white">


        <ImageView
            android:id="@+id/myimage"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerHorizontal="true"
            android:layout_centerVertical="true"
            android:src="@mipmap/ic_launcher" />
    </RelativeLayout>
</android.support.design.widget.CoordinatorLayout>

风格： parent =＆＃34; Theme.AppCompat.Light＆＃34;

    <!-- Base application theme. -->
    <style name="AppTheme" parent="Theme.AppCompat.Light">
        <!-- Customize your theme here. -->
        <!--<item name="colorPrimary">@color/colorPrimary</item>-->
        <!--<item name="colorPrimaryDark">@color/colorPrimaryDark</item>-->
        <!--<item name="colorAccent">@color/colorAccent</item>-->
    </style>

Manifest：在应用标记中将主题设置为@style/AppTheme。

<application
    ...
    android:theme="@style/AppTheme"
    ...
    >
</application>

Answer 2

你可以试试这个

将它放在您的activity_main.xml

中

<android.support.design.widget.FloatingActionButton
    android:id="@+id/fab"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="bottom|end"
    android:layout_margin="@dimen/fab_margin"
    android:visibility="gone"
    android:src="@android:drawable/ic_dialog_email" />

//这个按钮看不见

现在在活动oncreate o方法中编写此代码，以便在应用启动时显示一次

FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
    fab.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
                    .setAction("Action", null).show();
        }
    });
    fab.performClick();

Answer 3

我认为你可以使用这个

Snackbar snackbar = Snackbar.make(snackbarCoordinatorLayout, "Snackbar",
                    Snackbar.LENGTH_LONG);

然后将动作设置为小吃栏，即，当您点击小吃栏时，将执行此操作

snackbar.setAction("OK", new View.OnClickListener() {
                @Override
                public void onClick(View v) {
                    Toast.makeText(SnackBarActivity.this,"snackbar OK clicked", 
                       Toast.LENGTH_LONG).show();
                }
            });

了解更多信息请点击here

Snack Bar Android中的错误，带有此，getActivity等

3 个答案: