Android SnackBar _android

【Android SnackBar】宝剑锋从磨砺出，梅花香自苦寒来。这篇文章主要讲述Android SnackBar相关的知识，希望能为你提供帮助。

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展示的效果就这样简单就看你是有那个需求了。SnackBar的创建过程使用了Builder设计模式，有不同需求的可以更具需求结合代码创建出需要的效果。

[java] view plaincopy

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public class MainActivity extends Activity {
private SnackBar mSnackBar;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mSnackBar = new SnackBar.Builder(this)
.withMessage("提示信息")
.withDuration(SnackBar.LONG_SNACK)
.show();
}
}

下载demo

分享个退出提示工具类DoubleClickExitHelper.java

package miuyongjun.twentysix.utils; import android.app.Activity; import android.os.Handler; import android.os.Looper; import android.support.design.widget.Snackbar; import android.view.KeyEvent; import android.view.View; /** * 双击退出工具类 * * @author wxc */ public class DoubleClickExitHelper {private final Activity mActivity; private boolean isOnKeyBacking; private Handler mHandler; private Snackbar snackbar; public DoubleClickExitHelper(Activity activity) { mActivity = activity; mHandler = new Handler(Looper.getMainLooper()); AppManager.getAppManager().addActivity(mActivity); }/** * Activity onKeyDown事件 */ public boolean onKeyDown(int keyCode, View view) { if (keyCode != KeyEvent.KEYCODE_BACK) { return false; } if (isOnKeyBacking) { mHandler.removeCallbacks(onBackTimeRunnable); if (snackbar != null) { snackbar.dismiss(); } AppManager.getAppManager().AppExit(mActivity); return true; } else { isOnKeyBacking = true; if (snackbar == null) { snackbar = Snackbar.make(view, "再次点击退出应用", 2000); } snackbar.show(); mHandler.postDelayed(onBackTimeRunnable, 2000); return true; } }private Runnable onBackTimeRunnable = new Runnable() { @Override public void run() { isOnKeyBacking = false; if (snackbar != null) { snackbar.dismiss(); } } }; }

在MainActivity中，使用：

@Override public boolean onKeyDown(int keyCode, KeyEvent event) { boolean flag = true; if (keyCode == KeyEvent.KEYCODE_BACK) { return mDoubleClickExitHelper.onKeyDown(keyCode, navigationView); } return flag; }

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