[安卓开发] 完美解决Dialog不能全屏

来源：互联网发布：win10网络设置在哪编辑：程序博客网时间：2024/05/22 18:56

为什么布局设置了match_parent还是不能全屏呢？

看dialog的show的源码:

public void show() {        if (mShowing) {            if (mDecor != null) {                if (mWindow.hasFeature(Window.FEATURE_ACTION_BAR)) {                    mWindow.invalidatePanelMenu(Window.FEATURE_ACTION_BAR);                }                mDecor.setVisibility(View.VISIBLE);            }            return;        }        mCanceled = false;        if (!mCreated) {            dispatchOnCreate(null);        }        onStart();        mDecor = mWindow.getDecorView();        if (mActionBar == null && mWindow.hasFeature(Window.FEATURE_ACTION_BAR)) {            final ApplicationInfo info = mContext.getApplicationInfo();            mWindow.setDefaultIcon(info.icon);            mWindow.setDefaultLogo(info.logo);            mActionBar = new WindowDecorActionBar(this);        }        WindowManager.LayoutParams l = mWindow.getAttributes();        if ((l.softInputMode                & WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION) == 0) {            WindowManager.LayoutParams nl = new WindowManager.LayoutParams();            nl.copyFrom(l);            nl.softInputMode |=                    WindowManager.LayoutParams.SOFT_INPUT_IS_FORWARD_NAVIGATION;            l = nl;        }        try {            mWindowManager.addView(mDecor, l);            mShowing = true;            sendShowMessage();        } finally {        }    }

可以看出，大小在show的时候设置的。在show之前，即使动态改变这个layoutParams，也是不行的。

解决方法1：

首先style:

<style name="CommentStyle" parent="@android:style/Theme.Dialog">        <item name="android:windowFullscreen">true</item>        <item name="android:windowNoTitle">true</item></style>

dilaog里面的setContentView下面

getWindow().setLayout(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);

方法二

dialog里面重写show()

    @Override    public void show() {        super.show();        LinearLayout.LayoutParams layoutParams = (LinearLayout.LayoutParams) view.getLayoutParams();        DisplayMetrics dm = new DisplayMetrics();        WindowManager manager = (WindowManager) mContext.getSystemService(Context.WINDOW_SERVICE);        manager.getDefaultDisplay().getMetrics(dm);        layoutParams.width = dm.widthPixels;        layoutParams.height = dm.heightPixels;        view.setLayoutParams(layoutParams);    }

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