dialog 全屏 透明度 无法弹出输入键盘

1.无法弹出输入键盘

有人说，不让我extends alertdialog
让我改写为dialog；
发现不行；
方法二：
1.解决无法弹出输入法：

在show()方法调用之前，用dialog.setView(new EditText(context))添加一个空的EditText，由于是自定义的AlertDialog，有我们指定的布局，所以设置这个不会影响我们的功能，这样就可以弹出输入法了……
看我的全能代码：

public class SearchContentDialog extends AlertDialog {    private View.OnClickListener mListener;    private Context mContext;    private TextView tvwNetInfo;    private ImageView mImageView;    public Button mBtnLoad;    private String content;    private boolean isShowAgainLoad = true;    private LinearLayout llBtnSearch;    private EditText edtContent;    private SearchContentListener searchContentListener;    private InputMethodManager imm;    public SearchContentDialog(Context context, String content, View.OnClickListener listener) {        super(context);        this.mContext = context;        this.content = content;        this.mListener = listener;        this.setCanceledOnTouchOutside(false);    }    public SearchContentDialog(Context context, SearchContentListener searchContentListener) {        super(context);        this.mContext = context;        this.searchContentListener = searchContentListener;        this.setCanceledOnTouchOutside(false);    }    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.dialog_search_content);        edtContent = (EditText) findViewById(R.id.edt_search_content);        imm = (InputMethodManager) mContext.getSystemService(INPUT_METHOD_SERVICE);        edtContent.setOnFocusChangeListener(new View.OnFocusChangeListener() {            @Override            public void onFocusChange(View v, boolean hasFocus) {                if (hasFocus) {                    imm.showSoftInput(v, 0);                } else {                    imm.hideSoftInputFromWindow(v.getWindowToken(), 0);                }            }        });        edtContent.setOnEditorActionListener(new TextView.OnEditorActionListener() {            @Override            public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {                if (actionId == EditorInfo.IME_ACTION_SEARCH || actionId == EditorInfo.IME_ACTION_UNSPECIFIED) {                    LogUtils.e("sjt", "触发了搜索");                    searchContentListener.searchByContent(edtContent.getText().toString());                    return true;                }                return false;            }        });        llBtnSearch = (LinearLayout) findViewById(R.id.ll_search_content);        TextView tvwCancle = (TextView) findViewById(R.id.tvw_cancle);        tvwCancle.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                dismiss();            }        });        llBtnSearch.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View v) {                searchContentListener.searchByContent(edtContent.getText().toString());            }        });    }    @Override    public void show() {        super.show();        /**         * 设置宽度全屏，要设置在show的后面         */        WindowManager.LayoutParams layoutParams = getWindow().getAttributes();        layoutParams.gravity = Gravity.CENTER;        layoutParams.width = WindowManager.LayoutParams.MATCH_PARENT;        layoutParams.height = WindowManager.LayoutParams.MATCH_PARENT;        getWindow().getDecorView().setPadding(0, 0, 0, 0);        getWindow().setAttributes(layoutParams);    }    @Override    public void onBackPressed() {        Activity activity = (Activity) mContext;        WindowManager.LayoutParams params = activity.getWindow().getAttributes();        params.alpha = 0.5f;        activity.getWindow().setAttributes(params);        activity.finish();        super.onBackPressed();    }    public void showKeyboard() {        if (edtContent != null) {            //设置可获得焦点            edtContent.setFocusable(true);            edtContent.setFocusableInTouchMode(true);            //请求获得焦点            edtContent.requestFocus();            //调用系统输入法            InputMethodManager inputManager = (InputMethodManager) edtContent                    .getContext().getSystemService(INPUT_METHOD_SERVICE);            inputManager.showSoftInput(edtContent, 0);        }    }    public interface SearchContentListener {        public void searchByContent(String content);    }}

2.透明度问题

1.设置透明度（Dialog自身的透明度）

WindowManager.LayoutParams lp=dialog.getWindow().getAttributes();
lp.alpha=1.0f;
dialog.getWindow().setAttributes(lp);

alpha在0.0f到1.0f之间。1.0完全不透明，0.0f完全透明

2.设置黑暗度(Dialog自身的黑暗度)

dialog.setContentView(R.layout.dialog);
WindowManager.LayoutParams lp=dialog.getWindow().getAttributes();
lp.dimAmount=1.0f;
dialog.getWindow().setAttributes(lp);
dialog.getWindow().addFlags(WindowManager.LayoutParams.FLAG_DIM_BEHIND);

dimAmount在0.0f和1.0f之间，0.0f完全不暗，1.0f全暗

3.设置Dialog底背景模糊和黑暗度

WindowManager.LayoutParams.FLAG_BLUR_BEHIND（设置模糊）

WindowManager.LayoutParams.FLAG_DIM_BEHIND（设置暗淡）

4.清除Dialog底背景模糊和黑暗度

getDialog().getWindow().clearFlags(WindowManager.LayoutParams.FLAG_BLUR_BEHIND | WindowManager.LayoutParams.FLAG_DIM_BEHIND)