目录
目录.png
文件结构
结构.png
思路
无标题.png
每一个asker 有很多属性， 有三个方法【请求时】【用户处理后】【用户前往设置界面处理后】
工具代码
接口
public interface OnAskAppearListener {
void onAppear();
}
工具类
public class PermissionAsker {
private Activity activity;//activity
private Fragment fragment;//fragment
private OnAskAppearListener listener;//申请权限时要执行的事件
private String[] permissions;//权限
private int permissionCode;//权限申请码，不同权限，不能冲突
private int activityCode;//设置界面权限申请码，不同权限不能冲突
private String askReason;//权限跳转提示语句
private boolean must;
private AlertDialog alertDialog;
private boolean isAsking;
/**
* 构造一个asker
* @param activity activity
* @param listener 申请权限时要执行的事件
* @param permisstions 权限
* @param permissionCode 权限申请的requestCode
* @param activityCode 跳转到设置界面的requestCode
* @param askReason 是否弹出dialog跳转到权限设置
*/
public PermissionAsker(Activity activity, Fragment fragment, OnAskAppearListener listener, String[] permisstions, int permissionCode, int activityCode, String askReason, boolean must){
this.activity = activity;
this.fragment = fragment;
this.listener = listener;
this.permissions = permisstions;
this.permissionCode = permissionCode;
this.activityCode = activityCode;
this.askReason = askReason;
this.must = must;
}
public void onAsk(){
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M){
for (String permission : permissions){
if (ActivityCompat.checkSelfPermission(activity, permission) != PackageManager.PERMISSION_GRANTED){
ask();
return;
}
}
listener.onAppear();
}
}
/**
* 权限申请对方选取是否拒绝后
* @param requestCode
* @param grantResults
*/
public void onChoose(int requestCode, int[] grantResults){
isAsking = false;
if (requestCode == permissionCode){
for (int grantResult : grantResults) {
if (grantResult != PackageManager.PERMISSION_GRANTED){
showDialog();
return;
}
}
listener.onAppear();
}
}
/**
* 设置界面返回后
* @param requestCode
*/
public void onSet(int requestCode){
if (requestCode == activityCode && Build.VERSION.SDK_INT >= Build.VERSION_CODES.M){
for (String permission : permissions){
if (ActivityCompat.checkSelfPermission(activity, permission) != PackageManager.PERMISSION_GRANTED){
if (must) {
showDialog();
}
return;
}
}
listener.onAppear();
}
}
private void showDialog(){
if (!isAsking) {
AlertDialog.Builder builder = new AlertDialog.Builder(activity).setTitle("权限申请").setMessage(askReason)
.setPositiveButton("立即开启", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
for (int i = 0; i < permissions.length; i++) {
if (!ActivityCompat.shouldShowRequestPermissionRationale(activity, permissions[i])
&& ActivityCompat.checkSelfPermission(activity, permissions[i]) != PackageManager.PERMISSION_GRANTED) {
goToAppSetting();
return;
}
}
ask();
}
});
if (must) {
builder.setCancelable(false);
} else {
builder.setNegativeButton("以后开启", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
}
});
}
alertDialog = builder.create();
alertDialog.show();
}
}
// 跳转到当前应用的设置界面
private void goToAppSetting() {
Intent intent = new Intent();
intent.setAction(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
Uri uri = Uri.fromParts("package", activity.getPackageName(), null);
intent.setData(uri);
activity.startActivityForResult(intent, activityCode);
}
private void ask(){
isAsking = true;
if (fragment != null) {
fragment.requestPermissions(permissions, permissionCode);
} else {
activity.requestPermissions(permissions, permissionCode);
}
}
public static class Builder{
private Activity activity;
private Fragment fragment;
private OnAskAppearListener listener;
private String[] permissions;
private int permisstionCode;
private int activityCode;
private String askReason;
private boolean must;
public Builder(){
activity = null;
fragment = null;
listener = null;
permissions = null;
permisstionCode = -1;
activityCode = -1;
askReason = null;
must = false;
}
public Builder setActivity(Activity activity) {
this.activity = activity;
return this;
}
public Builder setFragment(Fragment fragment){
this.fragment = fragment;
return this;
}
public Builder setListener(OnAskAppearListener listener) {
this.listener = listener;
return this;
}
public Builder setPermissions(String[] permissions) {
this.permissions = permissions;
return this;
}
public Builder setPermisstionCode(int permisstionCode) {
this.permisstionCode = permisstionCode;
return this;
}
public Builder setActivityCode(int activityCode) {
this.activityCode = activityCode;
return this;
}
public Builder setAskReason(String askReason) {
this.askReason = askReason;
return this;
}
public Builder setMust(boolean must){
this.must = must;
return this;
}
public PermissionAsker build(){
return new PermissionAsker(activity, fragment, listener, permissions, permisstionCode, activityCode, askReason, must);
}
}
}
使用代码
public class MainActivity extends AppCompatActivity {
//初始化强制权限
private PermissionAsker initAsker;
//内部非强制权限
private PermissionAsker softFileAsker;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initAsker = new PermissionAsker.Builder()
.setActivity(this)
.setActivityCode(2)
.setPermisstionCode(2)
.setAskReason("为了测试，我们需要你的这些权限")
.setPermissions( new String[]{
Manifest.permission.RECORD_AUDIO,
Manifest.permission.CAMERA
})
.setMust(true)
.setListener(new OnAskAppearListener() {
@Override
public void onAppear() {
Toast.makeText(MainActivity.this, "成功啦", Toast.LENGTH_SHORT).show();
}
})
.build();
softFileAsker = new PermissionAsker.Builder()
//activity
.setActivity(this)
//activty请求码
.setActivityCode(4)
//请求原因
.setAskReason("非强制读取你的文件权限。")
//回调事件
.setListener(new OnAskAppearListener() {
@Override
public void onAppear() {
Toast.makeText(MainActivity.this, "非强制拿到", Toast.LENGTH_SHORT).show();
}
})
//是否必须获取
.setMust(false)
//要获取的权限
.setPermissions(new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE})
//权限请求码
.setPermisstionCode(4)
.build();
initAsker.onAsk();
findViewById(R.id.btn_soft).setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
softFileAsker.onAsk();
}
});
}
@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
super.onRequestPermissionsResult(requestCode, permissions, grantResults);
initAsker.onChoose(requestCode, grantResults);
softFileAsker.onChoose(requestCode, grantResults);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
initAsker.onSet(requestCode);
softFileAsker.onSet(requestCode);
}
}